The dominant phenotype would manifest in a chicken with such a heterozygous dominant genotype(gene) (Aa) (black feathers).
The recessive phenotype would manifest in a chicken with the homozygous recessive genotype (aa). The feather colour gene in certain hens is regulated by codominance. White feathers have the gene W, whereas black feathers have the allele B. Erminette is the name given to the polygenic genotype. 39 pairs make up a chicken. Genotype: An organism's genetic make-up. The visible physical or chemical traits of an upper portion from its genotype are called its phenotype. The body form, feather colour, eye colour, kind of comb, and other characteristics are examples of phenotypes in chickens. The genotypes AA, Aa, and aa are all conceivable in a population that has two alleles (A and a) at locus A.
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nerve gas interferes with the action of an enzyme that breaks down acetylcholine. this process allows the acetycholine to remain in a synapse almost indefinetly. at which location does this inhibiting effect of the nerve gas occur
Since the phosphorus molecule of the nerve gas can't fall off of the catalyst, the chemical is at this point not ready to communicate with acetylcholine.
In this manner, the catalyst is restrained and acetylcholine develops nearby its receptors5. The body should incorporate new catalyst particles to conquer the deficiency of acetylcholinesterase.
Nerve specialists, some of the time likewise called nerve gases, are a class of natural synthetic substances that disturb the instruments by which nerves move messages to organs. The interruption is brought about by the obstructing of acetylcholinesterase (Throb), a compound that catalyzes the breakdown of acetylcholine, a synapse.
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The nerve gas is not yet prepared to interact with acetylcholine since the phosphorus molecule can't escape from the catalyst.
Acetylcholine forms close to its receptors as a result of the catalyst being restrained in this way. To overcome the lack of acetylcholinesterase, the body should integrate new catalyst particles.
Nerve specialists, also known as nerve gases at times, are a class of naturally occurring manmade compounds that disrupt the mechanisms by which nerves transmit messages to organs. The obstruction of acetylcholinesterase (Throb), a substance that catalyses the breakdown of acetylcholine, a synapse, is what causes the interruption.
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Which characteristic is shared by both prokaryotes and eukaryotes?
Answer: They both a bear a lipid bilayer
Explanation:
how did predation alone affect the abundance of phytoplankton within the ponds? give a plausible explanation for why this occurred.
Predation alone can affect the abundance of phytoplankton within ponds by decreasing the number of phytoplankton cells.
This occurs because phytoplankton is a primary food source for many aquatic organisms, and when these organisms consume phytoplankton, the population size of the phytoplankton decreases.Predation can also affect the community structure of phytoplankton. Some species of phytoplankton are more palatable to predators than others. Over time, this selective pressure can lead to changes in the species composition of the phytoplankton community, with a decrease in the abundance of palatable species, and an increase in the abundance of unpalatable species.Additionally, predation can also affect the size structure of phytoplankton, as some predators are more efficient at consuming larger cells while others feed on smaller ones.
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what is the structure on a beluga’s forehead called?
Melon is the name of the feature on a beluga whale's forehead. The beluga's head's melon is the spherical feature directly in front of the blowhole.
While the latter can change shape when the whale makes sounds and is only made up of lipids (fats). By concentrating, the melon sends echolocation signals through the water. It can only be found on toothed whales and not baleen whales.
Lips can be pursed into the "O" shape.
The beluga's tongue creates a tight seal around fish, allowing it to be ingested without water.
A beluga possesses a dorsal ridge rather than a dorsal fin, which would be vulnerable to damage from ice and heat loss.
Adults are often pale grey to pristine white.
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A beluga whale's forehead characteristic is known as a melon. The melon is the spherical structure just in front of the blowhole on the beluga's head.
While the latter, which is only composed of lipids and can change shape in response to the whale's sounds (fats). The melon uses its concentration to transmit echolocation signals through the water. Baleen whales do not possess it; only toothed whales do.
Lips can form a "O" shape when pursed.
Fish can be swallowed dry thanks to the tight seal that the beluga's tongue forms around it.
Instead of a dorsal fin, which would be susceptible to damage from ice and heat loss, belugas have a dorsal ridge.
Adults are typically either pure white or light grey.
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how does your brain help maintain water balance when you are dehydrated
When the body needs water, nerve centers deep within the brain are stimulated, resulting in the sensation of thirst. The sensation becomes stronger as the body's need for water increases, motivating a person to drink the needed fluids.
HOPE IT HELPS YOUPLS RATE AS BRAINLIEST ANSWERWhat are the substances present in an ovum to support the zygote for its development?
Answer:
Cytoplasm, Mitochondria, Yolk, Lipid droplets, Proteins, RNA and DNA
Explanation:
Recommend and defend a choice of technology to deal with the problems in the following scenario.
Situation: A grower's yield monitoring systems indicate that a cornfield is producing a very uneven harvest,
with strong productivity in some portions of the field and poor productivity elsewhere. Aerial photographs
support this conclusion, indicating distinct differences in the size and development of crop plants in areas
corresponding with those recorded by the yield monitoring systems. There is no obvious explanation to be
found in direct observation or coarse pH testing.
In this scenario, I would recommend the use of precision agriculture technology to deal with the uneven harvest problem in the cornfield.
What is precision agriculture?
Precision agriculture is a farming management system that uses technology to gather, process, and analyze data to optimize crop production. It involves the use of advanced technologies such as GPS, remote sensing, and data analysis to identify and manage variations within a field.
One of the key technologies that could be used in this scenario is the use of drones equipped with multispectral sensors. These drones can fly over the field and collect high-resolution images of the crop canopy, which can be analyzed to identify areas of poor productivity.
The multispectral sensors can detect variations in the crop's health, such as differences in chlorophyll content, which can indicate nutrient deficiencies or stress caused by pests or diseases.
Another technology that could be used is variable rate fertilizer application. This technology uses GPS and mapping data to apply different rates of fertilizer to different parts of the field, depending on the specific needs of the crops in each area. This can help to optimize fertilizer use and reduce costs, while also improving crop yields.
Overall, precision agriculture technology can help to identify the cause of the uneven harvest problem in the cornfield and implement targeted solutions to improve crop productivity. The use of drones and variable rate fertilizer application can provide the grower with accurate and actionable information, which can ultimately lead to increased yields and reduced costs.
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Which statement about cell structures is accurate
Answer:
cell of a tissue have similar structure
Explanation:
the cell is the basic structural functional and biological unit of all know organisms there are different shapes of the cells
which observations provide evidence that evolution has occurred? a mutation occurs in a strain of virus that allows the virus to escape detection by the immune system of its host. fossil remains indicate that the ancestors of modern horses had toed feet that transitioned over time into hooves. an antibiotic that initially kills most of the bacteria in a population loses its effectiveness after several bacterial generations. the protein sequence of human insulin has more similarities with chimpanzee insulin than with lizard insulin. individual mice in a large population have fur colors that range from dark brown to very light tan.
Evidence that evolution has occurred: Fossil remains indicate that the ancestors of modern horses had toed feet that transitioned over time to hooves.
An antibiotic that initially kills most of the bacteria in a population loses its effectiveness after several bacterial generations. the protein sequence of human insulin has more similarities with chimpanzee insulin than with lizard insulin.
This article will examine many sorts of data that scientists employ to track and reassemble the evolutionary histories of animals over extensive timeframes.
Embryology and anatomy. Anatomical traits that are common among creatures (even those that are only evident during embryonic development) may point to a common evolutionary ancestor.
The study of molecules. How closely related two creatures are can be inferred from similarities and differences between "identical" genes (i.e., a pair of homologous genes) in those animals.
Biogeography. We can reconstruct species' evolutionary histories using their geographic distribution.
Fossils. The fossil record does not provide an exhaustive account of evolutionary history, but it does provide evidence for the presence of extinct species and, occasionally, for probable "in-between" forms on the evolutionary road to modern species.
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What doe luciferae function a in thi proce?
A) a reactant
B) a ubtrate
C) an inorganic catalyt
D) an enzyme
Luciferase functions as an enzyme in the process. Option D.
Luciferase is an enzyme that functions and plays an important role in the process of bioluminescence.
Bioluminescence is the natural production of light by certain organisms, such as fireflies and deep-sea fish.
The enzyme works by catalyzing the oxidation of a molecule known as luciferin, producing light as a result. Luciferase is responsible for the light production in organisms that have adapted the ability to produce their own light.
This is an important adaptation for creatures living in the deep ocean or in other low-light environments, as it allows them to hunt and be hunted, as well as communicate with others of their species.
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Which of the following organs links the nervous system with the endocrine system?
a. pituitary
b. pineal gland
c. thalamus
d. hypothalamus
Answer:
The answer would be D. Hypothalamus
California, a city that is far inland, such as Sacramento, is typically warmer than a city near the coast, such as San Francisco agree or disagree why
The influence of the ocean is what make Sacramento much warmer in contrast to California.
Why is Sacramento warmer?Inland cities, such as Sacramento, are typically warmer than cities near the coast, such as California , because they are farther away from the cooling influence of the ocean. The ocean has a moderating effect on temperature, which means it can help to keep temperatures cooler in coastal areas.
In contrast, inland cities can experience more extreme temperatures because they are not protected by the ocean's cooling influence. Additionally, the temperature in inland cities is often affected by the "heat island" effect, which is when urban areas experience higher temperatures due to the concentration of human-made structures and surfaces that absorb and retain heat.
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how does the dna polymerase that is synthesizing the lagging strand stay bound to its template dna strand and coordinate with the dna polymerase on the leading strand?
The dna polymerase that is synthesizing the lagging strand stay bound to its template dna strand and coordinate with the dna polymerase on the leading strand is DNA polymerase on the leading strand attaches to DNA polymerase on the trailing strand.
DNA replication is the process of doubling the DNA chain assisted by DNA polymerase before mitosis or meiosis I in the S phase of the cell cycle. The DNA is made of two strands and each strand of the parent cell acts as a template for the production of complementary strands.
The lagging strand is the synthesized DNA strand and is located in the 5'→3' direction at the replication fork. During the replication process, nucleotides will be added to the end of the sugar from the Okazaki fragment with the help of DNA ligase enzymes. In order for the lagging strand to remain attached to the template DNA strand, the DNA polymerase on the leading strand attaches to the DNA polymerase on the trailing strand.
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each atom of the periodic table is
Answer: Each atom of the period table is in order of increasing atomic number.
Explanation: I hope this helps! :)
does secondary active transport require a protein in the lipid bilayer
In secondary active transport, a common carrier protein couples the movement of sodium ions down the gradient with the upward transfer of other molecules (a cotransporter).
A solute is said to be transported in the direction of its raising electrochemical potential while a second solute—typically an ion—is assisted to diffuse in the direction of its lowering electrochemical potential. This is known as secondary active transport.
Secondary active transport can be divided into two categories: cotransport and countertransport, in which the molecules pass the membrane in the same direction. Secondary active transport refers to a method that still uses ATP.
To create the gradient but not directly use it to move the chemical across the membrane. Energy for primary active transport is obtained directly from the destruction of ATP. The energy used in secondary active transport.
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Yes , sodium ions when coupled uphill the transport of substances is done by a carrier protein or a cotransporter.
In general , during primary active transport, ATP is needed for the movement of a substance across a membrane, mediated with the membrane protein, and generally against the concentration gradient. Most similar types of active transport use to involve proteins that serve as pumps.
On the other hand Secondary active transport is known as transport of a solute in direction where the increase in electrochemical potential is facilitated upon diffusion of a second solute in the direction of its decreasing electrochemical potential.
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Another bird species, the keel-billed toucan, is found to be present in a density of at least one pair per 20 acres at a time when canopy trees are dominant. Use the data in the passage to predict an approximate net productivity for the plot of rainforest land subjected to slash-and-burn agriculture when the keel-billed toucan is found present. Explain how you used the data to make your prediction.
The data provided in the passage can be used to predict an approximate net productivity for the plot of rainforest land subjected to slash-and-burn agriculture when the keel-billed toucan is found present.
To make this prediction, one needs to consider the number of pairs of keel-billed toucans per acre of land and the potential for habitat destruction as a result of the slash-and-burn agriculture.
As the passage states that there is at least one pair per 20 acres when canopy trees are dominant, this suggests that the number of pairs per acre would be approximately 0.05. This number is likely to decrease significantly when the land undergoes slash-and-burn agriculture, as the destruction of the canopy trees would likely lead to a decrease in the number of toucan pairs.
Therefore, the approximate net productivity of the plot of land is likely to be low, as the destruction of the canopy trees would likely lead to a decrease in the number of toucan pairs.
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Up to 6,200 feet above sea level, the Keel-Billed Toucan nests in tree holes in tropical, subtropical, and lowland rainforests.
Because there are frequently only a few spots available when multiple toucans are roosting in one hole, they have evolved to sleep with their beaks and tails under their bodies. A group of people who regularly or potentially interbreed in nature is referred to as a species. A species is the largest gene pool attainable in the wild in this sense.
The number of pairs of keel-billed toucans per acre of land and the possibility of habitat damage as a result of slash-and-burn agriculture must be taken into account in order to make this prediction. When canopy trees are prominent, the passage specifies that there is at least one pair per 20 acres, indicating that there are roughly 0.05 pairs per acre.
Because the loss of the canopy trees would probably result in fewer toucan pairs, the approximate net productivity of the plot of land is likely to be low.
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Identify the element of IPM missing in the following scenario, and explain why it is important to perform all the
steps.
Situation: A soybean grower was using an IPM system of pest management. The grower cleaned the fields
carefully prior to planting, used recommended inputs to bring the field up to an optimal nutritional level. The
grower used seed from a certified, trustworthy source. He planted a trap crop in a nearby field, released a
variety of beneficial nematodes and insects, and kept a close eye on the crop until he was sure the seed had
germinated and was growing well. Then, concerned for another crop he had set out, he turned his attention
elsewhere for several weeks. When he returned, he found the whole soybean field infected with white mildew.
The most crucial element of Integrated Pest Management (IPM) is biological control of disease and insect pests through biological methods.
What are the three essential tenets of an IPM system for integrated pest management?IPM's guiding principles include the following, Do your research before taking any action. Set up standards for pest species-specific monitoring. Decide what the pest must do before acting.Effective Integrated Pest Management (IPM) tactics consist of the following elements, threats posed by pests, maintaining a watch and comparing results against thresholds, Making decisions, Follow-up and record keeping.The most crucial element of IPM is biological control of disease and insect pests through biological methods.The most crucial element of IPM is biological control of disease and insect pests through biological methods.To learn more about Integrated Pest Management (IPM) refer to:
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what is the term for the procedure of cellecting data and recording observations under controlled conditions
Answer: the term is called an experiment
Explanation:
what does the hardy-weinberg theorem predict for the values of p and q in a population if the initial generation only contains heterozygous individuals?
According to the Hardy-Weinberg principle, genotype frequencies will be p2, 2pq, and q2 after one generation of random mating. Genotype frequencies are predicted to remain constant in the absence of further evolutionary pressures.
what is heterozygous?You have such a heterozygous genotype for the that gene if the two copies differ. If you have one gene for red hair one and allele for brown hair, for instance, you may be heterozygous for hair color. Which qualities are expressed depends on the interaction between the two alleles. If you inherit two identical copies of a gene, you are said to be homozygous for that gene. In contrast, a genotype with distinct alleles is called a heterozygous genotype. People with recessive characteristics, such as red hair or blue eyes, are always heterozygous for that gene.
Are heterozygous dominant or recessive?A homozygous dominant genotype is characterized by the presence of two dominant alleles for a trait in an organism. This genotype is designated as BB using the example of eye color. A heterozygous genotype is one in which an organism possesses both a dominant and a recessive allele.
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type of pharmaceutical agent binds to another agents receptor site, preventing the other agent from binding there and causing its desired effect?
An antagonist of a pharmaceutical agent binds to the receptor site of another agent, preventing the other agent from binding and causing the desired effect.
A receptor antagonist is a type of receptor ligand or drug that, unlike an agonist, blocks or dampens a biological response by binding to and blocking a receptor rather than activating it. Antagonist drugs disrupt the normal function of receptor proteins.
Antagonists work by preventing receptor activation. Preventing activation has a variety of effects. If an antagonist blocks the action of a substance that normally decreases cellular function, it increases cellular function.
A substance in medicine that inhibits the action or effect of another substance. An estrogen receptor antagonist, for example, is a drug that inhibits the stimulating effect of estrogen on a tumor cell.
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2. 3 A school boy touched the blood of an injured rugby player with
fres bare hands on a Friday afternoon. On the advice of his parents
he decided to see his doctor, but he only did so on the
following Tuesday. Do you think that the doctor would have
grenim PEP drugs? Give a reason for your answer.
Yes, the doctor should have prescribed PEP drugs for the school boy. PEP stands for post-exposure prophylaxis and is a highly effective way of preventing the transmission of blood-borne illnesses, such as HIV and hepatitis B and C, it can be contracted through contact with infected blood.
As the school boy had come into contact with an injured rugby player and it had been over four days since the incident, it is highly likely that the doctor should have prescribed PEP as it is most effective when taken within 24 hours of exposure, but can still be beneficial when administered up to 72 hours after the incident.
Furthermore, the doctor should have given the school boy a full assessment, including testing for the aforementioned illnesses, to ensure that if the player had been infected, the school boy would not be at risk.
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Yes, the doctor would have suggested the school boy to take PEP drug because it will prevent any kind of infection to the child.
The PEP drug which stands for post-exposure prophylaxis for HIV is a drug used for preventing any kind of infection from HIV because touching the blood of any other person can be dangerous for oneself. It is advised to use this drug either soon after or before 72 hours of the contagious contact to prevent any damage. Along with it, one must also use some pills for about a month in case of any minute detection. Since the school boy was in direct contact with the injured rugby player, so this kind of protection would benefit not just the helping child but also reduce any further issue in the future.
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The least numerous but largest agranulocytes are the:
a) Monocyte
b) Lymphocyte
c) Basophil
The least numerous but largest agranulocytes are Monocytes. Here option A is the correct answer.
Agranulocytes are a type of white blood cell that do not contain granules in their cytoplasm. They are three types of agranulocytes: monocytes, lymphocytes, and basophils.
Monocytes are the largest of the three and the least numerous, they are the precursors to macrophages, which are cells that play a role in the immune system by ingesting and destroying foreign particles.
Lymphocytes are important in the immune system and responsible for producing antibodies, and Basophils are a type of white blood cell that plays a role in inflammation and allergic reactions.
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The least numerous but largest agranulocytes are the Monocyte. Agranulocytes are a type of white blood cells that do not have granules in their cytoplasm.
Monocytes are a type of agranulocyte that are known for their ability to migrate out of the bloodstream and into the tissues, where they differentiate into macrophages or dendritic cells. These cells play an important role in the immune response by engulfing and destroying pathogens. Monocytes are the least numerous of the agranulocytes, with a normal range of 2-10% of total white blood cells. They are larger in size than other types of agranulocytes, such as lymphocytes and basophils. Monocytes are important cells in the body, but are not as common as Lymphocytes or Basophils in the blood stream.
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The evidence that an asteroid did hit earth at the KT boundary is strong. But did it cause extinction
of the dinosaurs? What additional hypothesis are scientists investigating?
Volcanic Activity
Over population
Climate Change
Tectonic Activity
Granted that the evidence that "an asteroid did hit earth at the KT boundary is strong. But did it cause extinction of the dinosaurs?" Note that the additional hypothesis are scientists investigating here is: "
Volcanic Activity (Option A)Climate Change (Option C).What is the rationale for the above response?Note that the prevailing hypothesis for the extinction of dinosaur borders around the above-elected options.
For decades, the accepted explanation of dinosaur extinction was that an asteroid from the belt between Mars and Jupiter smashed into the globe, producing horrific devastation that wiped out most life on the planet.
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the aerobic stages of cellular respiration take place in the .
The aerobic stages of cellular respiration take place in the mitochondria.
The process by which cells produce ATP out of glucose and oxygen is known as cellular respiration. Glycolysis, which happens in the cytoplasm, and the citric acid cycle and the electron transport chain, which happen in the mitochondria, are the two stages of cellular respiration.
Because they both require oxygen to function, the citric acid cycle and the electron transport chain are generally referred to as the aerobic stages of cellular respiration. These processes are regarded as aerobic because they produce ATP more effectively than glycolysis.
The respiration produces the much needed energy required by the body to do all the task that ensure survival of the organism.
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In the mitochondria, the aerobic stages of cellular respiration occur.
Cellular respiration is the process by which cells generate ATP from glucose and oxygen. The two stages of cellular respiration are glycolysis in the cytoplasm and the citric acid cycle and the electron transport chain in the mitochondria.
The citric acid cycle and the electron transport chain are commonly referred to as the aerobic stages of cellular respiration because they both require oxygen to function. These processes are classified as aerobic because they produce more ATP than glycolysis.
The respiration process generates the much-needed energy required by the body to perform all of the tasks necessary for the organism's survival.
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A cell that lacks a cell wall has a cytoplasmic solute concentration equal to 3. 5% NaCl, is placed into a tube containing a solution that has a NaCl concentration of 1%. What type of environment is the cell placed in
The cell is placed in a hypertonic solution as the concentration of solute inside the cell is greater than the tube containing a solution.
A hypertonic solution has a high solute concentration in comparison to cells. A 3.5% solute, NaCl, concentration, for example, is hypertonic. When a cell is exposed to a hypertonic environment, with 1% NaCl concentration, there is a net movement of water to the cell's exterior (from the higher water environment inside the cell). In response, the cell shrinks.
A solute is a solid substance that dissolves in a solvent, such as salt or sugar. In most living systems, water serves as the solvent. Osmosis is a type of diffusion in which water molecules pass through a permeable membrane but larger molecules do not. Osmosis moves water from a high-concentration region to a low-concentration region across a semi-permeable membrane until equilibrium is reached.
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The cell placed in the tube containing a solution with a NaCl concentration of 1% would be placed in a hypotonic environment.
This is because the concentration of the NaCl in the solution (1%) is lower than the concentration of the NaCl in the cytoplasm of the cell (3.5%). A hypotonic environment is a solution that has a lower solute concentration than the cell, which causes water to flow into the cell due to osmosis.
This can potentially cause the cell to swell and eventually burst. This can be detrimental to the cell, so cells in hypotonic environments must be able to cope with the influx of water. This can be done through the maintenance of osmotic pressure, or the production of a cell wall to contain the swelling of the cell.
Since this cell lacks a cell wall, it must rely on the maintenance of osmotic pressure to remain intact in the hypotonic environment.
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in which type(s) of photosynthesis does the following event occur? (select all that apply) there is spatial or temporal (time) separation between c fixation and the generation of reduced carbon.
CAM is the type of photosynthesis, in which there is a spatial or temporal (time) separation between carbon fixation and generation of reduced carbon.
Desert plants contain CAM. These plants open their stomata at night to allow CO2 in and reduce water loss during hot days. During the night, CO2 is stored as malic acid in the plant vacuole. When the desert sun shines, the stomatal openings close and CO2 is "removed" from the malic acid, which is then introduced to rubisco to produce carbohydrates. Hence, Carbon fixation and reduction takes place in CAM photosynthesis.
C3, C4, and CAM (crassulacean acid metabolism) are the three main types of photosynthesis. C3 photosynthesis is the most common way for plants to absorb carbon dioxide and produce carbohydrates. C4 plants have rubisco in one cell and a mechanism for pulling CO2 from another cell that is linked by openings between the cells called plasmodesmata that connect the two cells together.
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CAM is a sort of photosynthesis, wherein there is a spatial or transient (time) detachment between carbon obsession and the age of diminished carbon.
Desert plants contain CAM. These plants open their stomata around evening time to permit CO2 in and decrease water misfortune during blistering days. During the evening, CO2 is put away as malic corrosive in the plant vacuole. At the point when the desert sun sparkles, the stomatal openings close, and CO2 is "eliminated" from the malic corrosive, which is then acquainted with rubisco to deliver starches. Subsequently, Carbon obsession and decrease happen in CAM photosynthesis.
C3, C4, and CAM (crassulacean corrosive digestion) are the three fundamental kinds of photosynthesis. C3 photosynthesis is the most widely recognized way for plants to assimilate carbon dioxide and produce starches. C4 plants have rubisco in one cell and a component for pulling CO2 from one more cell that is connected by openings between the phones called plasmodesmata that associate the two cells together.
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the system of classifying living things into categories.
Answer:
taxonomy
Explanation:
We classify organisms into different taxa and the process is called taxonomy. Various features are taken into consideration like structure of cell , morphology, etc .Humans have always been trying to classify the organisms , earliest classifications were done on the basis of use of the animals.when phylogeny is also taken into consideration along with taxonomy then it is called systematics .Hope this helps!
Predict whether evolution due to genetic drift is likely to occur in the Brazilian Atlantic rain forest, where palms are becoming isolated in smaller "islands" of forest because of human activities. Explain your reasoning.
Due to the bottleneck effect, genetic drift in palms in the pieces of the forest is likely to happen.
The differences between the allele frequencies in each of the remaining forest pieces and the original, entire population are most likely coincidental. Genetic drift is the shift in population frequency of a pre-existing gene variation brought on by random chance. Gene variations may totally vanish due to genetic drift, hence reducing genetic variety.
Additionally, it may lead to the substantially greater frequency and possibly fixation of previously rare alleles. Random drift is a result of recurrently tiny populations, drastic population decreases known as "bottlenecks," and founder events in which a new population is created from a small number of people.
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It is possible that evolution due to genetic drift may occur in the Brazilian Atlantic rainforest as a result of human activities leading to the isolation of palms in smaller "islands" of forest.
Genetic drift is a process of pure chance in which gene frequencies can change from one generation to another due to accidents of sampling. If the population of palms in these isolated "islands" of forest is small and isolated, genetic drift may lead to changes in the frequency of certain genes in the population, potentially leading to evolution. However, it is important to note that other factors such as natural selection, mutation and gene flow also play a role in evolution, and further research would be needed to determine the specific impact of genetic drift in this specific ecosystem.
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Use the following table to answer the question:
Codons Found in Messenger RNA
This table shows the codons found in messenger RNA. Using this information, what sequence of nucleotides in the template strand of DNA could code for the polypeptide sequence Val-His-Thr?
3' GUA-CAU-ACC 5'
3' GTA-CAT-ACC 5'
3' CAT-GTA-TGG 5'
3'CAU-GUA-UGG 5'
Using this information, the 3' GUA-CAU-ACC 5' sequence of nucleotides in the template strand of DNA could code for the polypeptide sequence Val-His-Thr.
Genes encode polypeptides' amino acid composition. A gene is a DNA segment that codes for a polypeptide sequence. Two procedures transform a gene sequence into a polypeptide sequence: Making an mRNA transcript dependent on a DNA template is known as transcription (occurs within the nucleus)
The main structure of a polypeptide chain is the distinctive arrangement of amino acids. For instance, the polypeptide chains A and B of the pancreatic hormonal insulin are joined by disulfide bonds.
A peptide bond connects repeated amino acid units to form polypeptides, which are biomaterials. Depending on their molecular makeup, polypeptides can adhere to various three-dimensional structures.
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The correct option is “3' GTA-CAT-ACC 5'”. Valine’s genetic sequence can be represented by “GTA”; Histidine genetic sequence can be represented by “CAT”; and Threonine can be represented by “ACC”.
The four nucleotides included in mRNA, A, U, G, and C, can form a total of 64 distinct combinations due to the codons' three-letter structure. Of these 64 codons, 61 correspond to amino acids and the final three to stop signals that signal the completion of protein synthesis. The message identifying a specific amino acid is carried by the messenger RNA codon, and the transfer RNA is responsible for adding that amino acid to the developing protein chain. The three nucleotides that make up the tRNA anticodon are the mRNA codon's complementary sequence of three nucleotides.
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hair follicles originate in this layer of the skin
Hair follicles originate in the dermis layer of the skin.
The skin is composed of three layers: the epidermis, the dermis, and the subcutaneous tissue (or hypodermis). The epidermis is the outermost layer and serves as a barrier to protect the body from the external environment. The dermis is the middle layer, and it contains blood vessels, nerves, and connective tissue. The subcutaneous tissue is the innermost layer and is composed of fat and connective tissue.
Hair follicles are structures in the skin that contain the cells that produce hair. They originate in the dermis and extend into the epidermis and subcutaneous tissue. Each hair follicle is associated with a sebaceous gland, which produces an oily substance called sebum that helps to lubricate the hair and skin.
In addition, hair follicles are also associated with the arrector pili muscle, that contracts causing the hair to stand up, this is the mechanism behind goosebumps.
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Hair follicles originate from the surface of Epidermis. Hair follicles are the tunnel shaped structures arising from the first and the second layer of our skin that is epidermis and dermis.
Hair follicles are mainly responsible for providing growth to the hair segments and that is why they are in need of proper nutrition.
Sometimes hair follicles also grow from the third layer of skin that is a subcutaneous layer but it is hardly seen to appear on the surface.
Hair growth begins at the bottom of hair follicles and so the bottom hair roots are nourished by the blood that tends to flow and reach them through the blood vessels.
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