Epigenetics is the study of how particular genes or proteins associated with particular genes are altered chemically in an organism.
What does biology mean by epigenetic inheritance?
When a cell divides and information is passed from one generation to the next, this process is referred to as epigenetic inheritance. For sustaining diverse gene expression patterns in differentiation, development, and disease, epigenetic inheritance is essential.
What is a case of epigenetic inheritance?It is crucial to demonstrate that the inherited phenotype requires passing through the gametes when considering transgenerational epigenetic inheritance (i.e., sperm and eggs). The fact that stressed-out moms generate stressed-out offspring is an instructive illustration.
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hypovolemia and dehydration are both examples of fluid deficiency. how do they differ? multiple choice question. in hypovolemia only water is lost, and in dehydration both water and electrolytes are lost. in dehydration water is lost, and in hypovolemia both water and electrolytes are lost. they differ only in the amount of fluid lost. in dehydration only water is lost, and in hypovolemia only electrolytes are lost.
In dehydration water is lost, and in hypovolemia both water and electrolytes are lost.
Hypovolemia v/s Dehydration:
The main distinction between dehydration and hypovolemia is that the latter occurs when the body loses more fluid than it takes in. Hypovolemia is characterized by a low extracellular fluid volume, which is typically caused by combined salt and water loss.Dehydration and hypovolemia are two medical diseases that result from a lack of salt and water and can happen simultaneously or separately. These two words are frequently used in the same sentence. They do, however, signify various pathophysiologic disorders that frequently coexist.While dehydration results in fluid loss from both the intracellular and extracellular compartments, hypovolemia results in fluid loss from the extracellular compartment.Dehydration occurs when the body loses more fluid than it takes in, whereas hypovolemia is a state marked by low extracellular fluid volume that is typically brought on by coupled salt and water loss. The main distinction between hypovolemia and dehydration is this. Additionally, fluid loss from the extracellular compartment occurs in hypovolemia, whereas fluid loss from both the intracellular and extracellular compartments occurs in dehydration.Hence, In dehydration water is lost, and in hypovolemia both water and electrolytes are lost.
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RNA polymerase enzymes in general do not have proofreading functions. In contrast, DNA polymerase enzymes often do have proofreading functions. Using this information, compare the following types of viruses and indicate which would you could reasonably predict to have the LOWEST mutation rate.
a) Group 2
b) Group 3
c) Group 4
d) Group 5
It is generally agreed that RNA pol. does not require proofreading because RNA molecules are functioning copies that can tolerate minor errors. Option (d) is the right response, thus.
Ribonucleic acid (RNA), a polymeric molecule, is involved in the coding, decoding, control, and expression of genes, among other biological processes. RNA and DNA are the two different forms of nucleic acids. Lipids, proteins, carbohydrates, and nucleic acids are the four primary macromolecules necessary for all recognized forms of life. RNA and DNA both contain nucleotides as its building components, however unlike DNA, RNA exists in nature as a single strand folded over on itself. Cellular organisms convey genetic information through messenger RNA (mRNA), which uses the nitrogenous bases guanine, uracil, adenine, and cytosine.
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what is true about the two-point threshold test? what is true about the two-point threshold test? the location where the subject detects two points at their smallest distance apart contains the greatest density of touch receptors. the area of the greatest density of touch receptors has the least ability to detect touch. the location where the subject detects two points at their smallest distance apart contains the least density of touch receptors, and the area of the greatest density of touch receptors has the least ability to detect touch. the location where the subject detects two points at their smallest distance apart contains the least density of touch receptors.
The location where the subject detects two points at their smallest distance apart contains the greatest density of touch receptors.
Define touch receptors.
Skin-based touch receptors are a subtype of sensory neuron that respond to mechanical stimulus. They have specific ends. Touch receptors therefore communicate with the central nervous system about tactile inputs as a component of the somatosensory system.
Being able to distinguish between two different places of stimulation on the skin at the same time is known as two-point discrimination. For instance, when a two-pronged fork is used to poke someone, the person will be able to distinguish that there are two different prongs touching their skin as opposed to thinking there is only one prong.
By presenting two simultaneous stimuli to the skin simultaneously at two different points that are spaced apart by a specific amount, it is possible to measure a person's threshold for two-point discrimination. Then, until the person is unable to distinguish the two stimuli as two distinct points, the two stimuli are repeatedly presented at progressively closer distances. A two-point instrument that exerts pressure on the skin is typically used to accomplish this. It is possible to adjust the instrument to change the distance between the two points. In order to avoid skewing the results of the test, the area of the subject's skin that is being examined is typically kept hidden.
The patient's two point threshold is defined as the shortest distance between pressure points that the person can perceive.
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Why does it make sense that acetyl-coa stimulates the activity of pyuruvate carboxylase?.
Acetyl-CoA indicates that the conversion of fat to carbs is necessary. Acetyl-CoA carboxylase accumulation indicates a lack of citrate. NADH is produced for energy when pyruvate carboxylase is activated by acetyl-CoA.
Why is it logical that acetyl-CoA would cause pyruvate carboxylase to be activated?Acetyl-CoA selectively activates pyruvate carboxylase. When acetyl-CoA concentrations are high, organisms use pyruvate carboxylase to divert pyruvate from the TCA cycle because acetyl-CoA is a crucial metabolite in the TCA cycle that generates a lot of energy.
How does pyruvate carboxylase become activated by acetyl-CoA?The production of more oxaloacetate is triggered by an excess of mitochondrial acetyl-CoA. When lipolysis is induced, for instance, intramitochondrial acetyl-CoA levels rise, allosterically activating pyruvate carboxylase to produce more oxaloacetate for gluconeogenesis.
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If you were traveling from Monterey on the California Coast to visit Yosemite National Park, on the eastern side of the state, what three major land forms would you pass through? (in order)
A) The Klamath Mountains, the Cascade Range and the Modoc Plateau.
B) The Transverse Ranges, the Mojave Desert and the Great Basin.
C) The Coast Ranges, the Central Valley and the Sierra Nevadas.
D) The Central Valley, the Sierra Nevadas and the Great Basin.
The Sierra Nevada and Coast Mountain Ranges fall and elevate by a few millimeters each year. As a result of winter rains and summer groundwater pumping in California's Central Valley. Thus, option C is correct.
What three major land forms in California?According to calculations by a group of geophysicists, gradual depletion of the Central Valley aquifer caused by groundwater pumping also raises these mountain ranges by a comparable amount each year.
Roughly the thickness of a dime—with a cumulative rise over the past 150 years of up to 15 centimeters (ca. 6 inch).
Therefore, The Coast Ranges, the Central Valley and the Sierra Nevadas. putting stress on the state's faults and raising the possibility of an earthquake.
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which of the following is a test to determine the presence of soluble antigens in a patient's saliva? which of the following is a test to determine the presence of soluble antigens in a patient's saliva? passive agglutination reaction neutralization reaction precipitation reaction direct agglutination reaction immunofluorescence
A test to determine the presence of soluble antigens in a patient's saliva is C)precipitation reaction. So, correct option is C.
Solvent Liver Antigen is a test that targets deciding, the degree of antibodies present in the blood of an individual. This test is performed by taking blood tests of the individual. To affirm the presence of immune system liver infection, as well as hepatitis this test is finished.
It especially identifies quality alongside amount of antibodies that are available in human serum against dissolvable liver antigen (SLA). Patients who have enemies of SLA are particularly comparable, from those with exemplary kind 1 immune system hepatitis it very well may be by age or recurrence or nature of different antibodies or probably sex dispersion. Consequently, it just recognizes those patients who are experiencing tremendous sicknesses and immune system hepatitis.
Hence, option C is correct.
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(Complete question) is:
which of the following is a test to determine the presence of soluble antigens in a patient's saliva?
a)passive agglutination reaction
b)neutralization reaction
c)precipitation reaction
d)direct agglutination reaction immunofluorescence
After circulating through the pulmonary circulation, blood returns to the heart at the
Answer:
In the lungs, the blood receives oxygen then leaves through the pulmonary veins. It returns to the heart and enters the left atrium
Explanation:
shakira is a volunteer at the local community garden. she has been asked by the garden director to raise some gerber daisies for the garden to sell in order to help fund the seeds needed for the next vegetable crop. shakira thinks red and yellow would be the best colors, but she also knows from her biology class that yellow is a recessive trait in gerber daisies. if she cross pollinates a yellow daisy with a known homozygous red daisy, what are the odds she will end up with a yellow daisy plant? complete a punnet square for the cross, upload it to this answer text box and calculate the odds. red is dominant (r) yellow is recessive (r)
Answer:
Shakira would end up with 0 yellow daisies if she cross pollinate a yellow daisy with a known homozygous dominant red daisy.
All possible offspring will be red.
Explanation:
ok so Shakira cross pollinates a homozygous dominant red daisy with a homozygous recessive yellow daisy.
(We know that the yellow daisy is homozygous since the trait is recessive hence it would only be shown in the absence of the dominant red gene.)
Homozygous means that both alleles for the gene are same while heterozygous means both alleles are not the same for a specific gene.
Denoting:
R as dominant red gene
r as recessive yellow gene
Parental phenotype: Red daisy 》 yellow daisy
parental genotype: RR 》 rr
parental gametes: (R) (R) 》 (r) (r)
Random fertilization: punnet square
R R
r Rr Rr
r Rr Rr
F1 generation phenotype: Red daisy 》 yellow daisy
F1 generation genotype: Rr, Rr, Rr, Rr 》 -
Ratio: 1 : 0
Percentage: 100% red 》 0% yellow
Who knows 10 good facts and 15 bad facts about Little Shop of Horrors?
10 good facts about Little Shop of Horrors includes:
Most of the props were sourced from New York thrift shopsBill Murray essentially improvised all his linesThe puppet’s lip-syncing had to be shot in slow motion then sped up later to make it look like Audrey II was singingThe film had its own tie-in board game called Feed Me!The biggest plant puppet had to be operated by 60 techniciansCyndi Lauper and Madonna were considered for the role of AudreyA bizarre dream sequence was cut from the final movieIt contains the first R-rated Oscar songVincent Gardenia says Frank Oz only cast him because he liked his name It got a spin-off Saturday morning cartoon15 bad facts about Little Shop of Horrors include the following:
Rick Moranis and Vincent Gardenia kept ruining shots with their giggling The film almost starred Rodney Dangerfield Two of Jim Henson’s children worked on the movieThe dentist’s equipment was used again in Burton’s 1989 Batman It marked the final movie appearance of Bertice Reading The Greek Chorus members are all named after girl bandsIt was Ellen Greene who decided Audrey should be blonde Mushnik’s phone conversation is a tribute to the original filmJim Belushi was only cast when the original Patrick Martin actor wasn’t available for reshoots.Somewhere That’s Green heavily influenced a Little Mermaid song At one point gunfire came through the wall from the neighbouring Aliens setSteve Martin injured himself when he accidentally punched his fist through a door filming one sceneThe actors had to shoot the Suddenly Seymour number with ice cubes in their mouthsEveryone died in the original endingThe original film was only made because of a betLittle Shop of Horrors?Little Shop of Horrors is described as a 1986 American horror comedy musical film directed by Frank Oz which is an adaptation of the 1982 off-Broadway musical.
The facts good and bad facts based on popular opinion has been highlighted.
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chemoreceptors for blood ph are located in the brain stem and the lungs. group of answer choices true false
Chemoreceptors for blood pH are located in the brain stem and the lungs.
This sentence is False.
Chemoreceptors for blood pH are located in the brain stem, in the carotid arteries, and in the aorta.
A chemoreceptor, also called a chemosensor, is a type of sensory receptor that converts an endogenous or induced chemical substance into a biological signal.
If the chemoreceptor is a neuron, the signal may take the form of an action potential; if it is a specialized cell, such as taste receptors, or an internal peripheral chemoreceptor, such as the carotid bodies, the signal may take the form of a neurotransmitter that can activate a nerve fiber.
So, now we state that the given statement is Not true.
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Respiration is a form of oxidation that causes what
Respiration is a form of oxidation that causes the electron donor to be oxidized and oxygen to be reduced.
What is Respiration?This is referred to as the movement of air or dissolved gases into and out of the lungs. It is also the process in which energy is produced from oxidation of organic substances through the intake of oxygen and the release of carbon dioxide.
In this scenario, the central organ of respiratory activities is referred to as the lungs and the electron donor is oxidized while the oxygen is reduced during the process thereby making it the correct choice.
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Judging and evaluating advertisements requires critical thinking because _______. a. advertisements can contain confusing, misleading information b. all advertisements contain false information c. advertisers always want to convince consumers to buy unnecessary items d. truth in advertising laws ensure the accuracy of information in advertisementsAnswer: Option A) advertisements can contain confusing, misleading information - is the correct answer.Reason for the answer: Many advertisement contains many misleading information or statement which should be judged properly.
Judging and evaluating advertisements requires critical thinking because advertisements can contain confusing as well as misleading information.
So, the correct option is A.
To judge and evaluate commercials, one must use critical thought. The main goals of advertisers are to educate the public and persuade them as effectively as they can about their goods. They offer unclear and inaccurate information with this goal in mind.
A thorough analysis of the product is needed in order to make an informed decision regarding whether to purchase it or not. To judge and evaluate ads, one must use critical thinking. Which aspects of advertisements are true and defensible requires critical thinking. One application of critical thinking is the scientific method. To correct incorrect information, they have an editorial process.
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if you were traveling from the outside of a prokaryotic cell to the inside, in what order would you encounter the following structures?
The prokaryotic cell's exterior features include a plasma membrane, cell wall, and capsule (or slime layer).
What do prokaryotic cells' internal and structural components look like?There are both exterior and interior structures in a prokaryotic cell. Outside of the cell wall, the bacterial cell has a capsule, flagella, axial filaments, fimbriae, and pili. Cytoplasm makes up the majority of the bacterial cell's interior.
What elements define the line separating each cell's inside and exterior?Each and every cell in the body is enclosed by a cell membrane (plasma). The cell membrane distinguishes between the internal and external components of the cell.
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describe four factors that affect population size
identify factors that limit population growth
explain the difference between primary and secondary succession
differentiate between habitat and niche
evaluate claims, evidence, and reasoning about interactions in ecosystems
use mathematical representations and simulations to support explanations
A population is any kind of complete group with at least one characteristic of t in common. Populations means are not just people. Populations may consist of but are not limited to people, animals, businesses, buildings, motor vehicles, farms, objects, or events.
When demographers an attempt to forecast changes in the size of a population, they typically focus on four of the main factors: fertility rates, mortality rates (life expectancy), the initial age profile of the population, and the (whether it is relatively old or relatively young, to begin with ) and migration.
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what are the two most important abiotic factors in determining the productivity or amount of life in different aeras of the ocean
Biotic factors include plants, animals, and microbes Important abiotic factors include the amount of sunlight in the ecosystem, the amount of oxygen and dissolved nutrients in the water, proximity to land, depth, and temperature.
Sunlight is one of the most important abiotic factors for marine ecosystems. The two most important abiotic factors that produce the primary productivity of plants in an ecosystem are temperature and humidity. Abiotic factors that influence aquatic biomes include light availability, depth, stratification, temperature, currents, and tides. The most important abiotic factors include water, sunlight, oxygen, soil, and temperature. Water (H2O) is a very important abiotic factor, it is often said that “water is life”. All living organisms need water. In fact, water makes up at least 50% of almost all living things. Biotic factors include animals, plants, fungi, bacteria, and protists. Some examples of abiotic factors are water, soil, air, sunlight, temperature, and minerals.
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in which area of the spinal cord can the axons of upper motor neurons that supply lower motor neurons for skilled movements be found?
In lateral white matter area the spinal cord can the axons of upper motor neurons that supply lower motor neurons for skilled movements be found.
The spinal cord is a lengthy, tissue-filled tube. It links your brain and lower back. From your brain to your body and the other way around, your spinal cord transports nerve information. You can move your body and feel sensations thanks to these nerve transmissions. Your movement or function may be impacted by spinal cord injury. Your body's central nervous system is made up of your brain and spinal cord.
The signal from the higher motor neuron must travel through the lower motor neuron to the effector muscle in order for the muscle to move. Lower motor neurons can be divided into three categories: somatic motor neurons, specific visceral efferent motor neurons, and general visceral motor neurons. Muscle rigidity and excessive reflexes can result from the lower motor neurons' inability to accept signals from the upper motor neurons.
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Structures that have no apparent function but had a function in ancestral species are.
Vestigial structures are those that seem to be leftover pieces from a previous ancestor but have no discernible function. Vestigial structures include things like the human appendix and a snake's pelvic bone.
Why are some characteristics regarded as vestigial?Certain characteristics are regarded as vestigial because they reduce biological fitness. Why did Darwin catalog and explain vestiges of traits? The presence of vestiges suggests that species change over time. The theory of special creation is incompatible with this significant pattern element of the theory of evolution.
What does the term "vestigial structure" mean?Vestigial structures are those that seem to be leftover pieces from a previous ancestor but have no discernible function.
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Identify the type of point mutation depicted. Glycine (G G C) i tranformed to Glycine (G G A). Glycine Glycine
miene mutation
nonene mutation
ilent mutation
Lyine (A A G) i tranformed to top codon (T A G). Lyine Stop
miene mutation
nonene mutation
ilent mutation
Point mutations are defined as a single modification or alteration in the nucleotide base of the cell's genetic code. It might be a single nucleotide base that is deleted, added, or inverted.
The mutations that took place are 1. C and 2. B in the list below.
How can the mutation be accounted for?
A single base's triplet codon experiences a silent mutation, but the changes are neutral and do not affect the base's ability to function. They have no impact on how the protein works. Therefore, the silent mutation from glycine to glycine.
When a single nucleotide base change results in the stop codon being formed, this is known as a non-sense mutation.
As a result, the lysine to stop codon mutation is nonsensical.
As a result, nonsense and silent mutations are the best choices.
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hen a person has previously been vaccinated against a viral pathogen, which cells are activated if that same pathogen re-enters the host's cells months or years later? when a person has previously been vaccinated against a viral pathogen, which cells are activated if that same pathogen re-enters the host's cells months or years later? helper t cells
The amount of circulating antibodies against a particular antigen rises after vaccination. B cells are a particular type of white blood cell (lymphocyte) that make antibodies. One unique epitope is the only one against which a B cell may make antibodies.
A type of white blood cell called a lymphocyte is a component of the immune system. B cells and T cells are the two primary subtypes of lymphocytes. Antibodies made by B cells are utilised to combat foreign bacteria, viruses, and poisons. The body's own cells that have contracted viruses or developed malignancy are destroyed by the T cells. The immune system is made up of lymphocytes, which are blood-circulating immune system cells. The two primary categories of lymphocytes are T cells and B cells.
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Eukaryotes that are not fungi, animals, or plants are classified in a catch-all category called.
Eukaryotes that are not fungi, animals, or plants are classified in a catch-all category called protists.
In the field of biology, protists can be described as organisms that are eukaryotic and do not belong to any of the fungus, animal or plant domains,
The protist have similarities with all the other three domains such as fungi, animals and plants yet have extremely different characteristics too due to which they are given a separate domain of their own.
Due to their similarities with fungi, animals and plants, it is believed that there might be common ancestors for protists to each of these domains.
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which of the following statements are correct regarding viruses? a) all viruses have nucleic acid b) all viruses have proteins c) all viruses have lipid envelopes
after reading the paragraph, answer the question(s) that follow. mr. and mrs. smith have three sons in elementary school. two of their children are progressing normally, but their last son, charles, has been much slower than his siblings at developing speech and language skills. his parents are concerned that he has a learning disability and decide to investigate further. since some learning disabilities can be genetically based, their pediatrician recommends a chromosomal analysis. the results show that charles has a trisomy of the sex chromosomes, diagnosed as xyy, which is caused by nondisjunction in the formation of the father's sperm. the nondisjunction resulted in an extra copy of the y chromosome. the extra copy was passed on to charles during fertilization. most often, this chromosomal change causes no unusual physical features or medical problems, but those with trisomy of the sex chromosomes do have a higher than normal risk of delays in learning development. during which stage of meiosis could this nondisjunction have occurred?
The nondisjunction took place during the Anaphase II stage of meiosis.
We must first understand that nondisjunction during meiosis might happen during either anaphase I or anaphase II in order to comprehend the following scenario. Homologous chromosomes don't split when they do so in anaphase I. The cells then undergo meiosis II properly, producing a maximum of four cells. These haploid cells are known as gametes because meiosis is taking place in them. The afflicted daughter cells are all. The chromosome will be duplicated in two additional gametes, and it won't be duplicated in the remaining two gametes.
Now, the YY chromosome is not disjunct, as stated in the description in the paragraph. If all goes accordingly, the XX and YY bivalent coils will appropriately split during meiosis I, and one cell will obtain the Y-chromosome. To ensure that each cell had a Y, the disjunction of YY was intended to take place during meiosis II.
The non-disjunction happened paternally in meiosis II during separation; this occurs in anaphase II.
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Which two statements are scientific claims?
there is 2 answer please help me
Science is the methodical examination of the world we live in via experimentation and observation.
What is Science?
Scientists gather information, examine it, and draw conclusions about how the universe functions.
The concept behind science is that it offers a reliable method for learning about the world while minimizing bias. When it comes to understanding what they see, humans are incredibly untrustworthy.
A scientific claim is often one that is supported by methodical observation and data. It is intended to be much more trustworthy than any other assertion you may make.
Therefore, Science is the methodical examination of the world we live in via experimentation and observation.
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how do changes in the atmosphere from burning fossil fuels affect plant life? select the two correct answers.
Atmospheric changes from the burning of fossil fuels that affect plant life are Increases in ozone levels slow plant growth and acid rain removes nutrients from the soil.
How does acid rain affect plants?Acidic water that touches plants can erode epidermal tissue, especially in the chloroplasts of leaves so that the photosynthetic ability of plants is reduced. This erosion of epidermal tissue makes plants more susceptible to drought and is also attacked by various kinds of pests and diseases and insects
Excessive UV-B radiation can inhibit plant metabolism so that growth grows slower and becomes stunted. The impact of exposure to UV-B rays in aquatic ecosystems hurts the distribution of phytoplankton which forms the basis of the food chain in the waters.
Burning fossil fuels releases various air pollutants such as toxic gases and particulate molecules.
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A few examples include nucleus and chloroplasts (plant cells), and golgi bodies and mitochondria (animal cells).
A few examples include nucleus and chloroplasts (plant cells), and golgi bodies and mitochondria (animal cells).
Other eukaryotes lack a number of features that are present in plant cells. In particular, organelles called chloroplasts enable plants to store solar energy in molecules with high energy, while cell walls enable plants to have a variety of hard structures, such as woody trunks and flexible leaves, and vacuoles enable plant cells to enlarge and contract. What Caused Chloroplasts to Form? Chloroplasts, like mitochondria, probably started out as a symbiotic relationship between a nucleated cell and a photosynthetic prokaryote. Chloroplasts do, in fact, resemble contemporary cyanobacteria, which are still related to those that existed 3 million years ago. The origin of photosynthesis, however, may be traced back to the earliest cells that developed the capacity to absorb light energy and utilise it to create molecules rich in energy.
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Mara lives in st. Louis, which is close to sea level. She decides to spend a month of her summer vacation working in the mountains outside of denver. After a week in the mountains, what kinds of changes would you expect to see as mara adapts to the higher altitude?.
After a week in the mountains, we would expect Mara adapts to the higher altitude by decreasing PO₂ in her alveoli. the correct answer is D.
Mara resides in St. Louis, which is not far from the sea. She plans to work in the mountains outside of Denver for a month during her summer break. We would anticipate that Mara will adjust to the greater altitude by having lower PO2 in her alveoli after a week in the mountains.
It results After a month, Mara typically exhibits regular oxygen absorption, increased ventilation, more basic hypoxic ventilation, larger lung volumes, greater diffusing capacities, and increased blood pressure as he adjusts to the higher altitude.
The human body experiences difficulties at altitude as the barometric pressure steadily drops, which causes a number of significant physiological reactions that help people control and ensure tissue oxygenation.
It results in the physiological reactions of the body, including a rise in hematocrit. Altitude with relatively low oxygen content, which has a significant impact on the cardiovascular system and blood pressure management, also affects the development of systemic hypertension. Hyperventilation intended to achieve adequate tissue oxygenation is another component of the pulmonary response to acute altitude exposure.
The complete question is:
Mara lives in st. Louis, which is close to sea level. She decides to spend a month of her summer vacation working in the mountains outside of Denver. After a week in the mountains, what kinds of changes would you expect to see as mara adapts to the higher altitude?
A) decreased hematocrit
B) decreased blood pressure
C) decreased alveolar ventilation rate
D) decreased PO2 in the alveoli
E) All of the answers are correct.
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atapuerca, dated to approximately 300,000 years ago, has yielded a sample representing about twenty-eight premodern homo sapiens individuals.
The site which has yielded a sample is A)Atapuerca which is representing about twenty-eight premodern homo sapiens individuals. So, correct option is A.
Atapuerca, site of a few limestone caves close to Burgos in northern Spain, known for the bountiful human (sort Homo) stays found there starting in 1976. The site called Sima del Elefante ("Pit of the Elephant") contains the earliest proof of people in western Europe — parts of a jawbone and teeth date to 1.1-1.2 quite a while back.
The close by site of Gran Dolina contains human remaining parts dating to around quite a while back and probably the earliest devices tracked down in western Europe.
Paleoanthropologists who previously portrayed the fossils credited them to another species, H. antecessor, which they proposed as the progenitor of present day people (H. sapiens) attributable to specific particularly current facial highlights. Different scientists, nonetheless, wonder whether or not to acknowledge this declaration and gathering the fossils with comparable remaining parts named H. heidelbergensis.
Hence, correct option is A.
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(Complete question) is:
Which of the following sites, dated to approximately 300,000 years ago, has yielded a sample representing about twenty-eight premodern homo sapiens individuals?
a. Atapuerca
b.Ehringsdorf
c. Steinheim
d. Swanscombe
e. Petralona
use the following information to answer the next few questions. a group of six students has taken samples of their own cheek cells, purified the dna, and used a restriction enzyme known to cut at zero, one, or two sites in a particular gene of interest. their next two steps, in order, should be
Gel electrophoresis is a technique used to separate DNA fragments by size and charge.
DNA fragments can be divided via gel electrophoresis based on their size and charge. The process of electrophoresis includes running a current through a gel that contains the targeted molecules. The molecules will migrate through the gel in various directions or at various rates to separate from one another depending on their size and load. The charge per mass of every DNA molecule is the same. Gel electrophoresis can only distinguish between DNA fragments of different sizes as a result. We can count the number of different DNA fragments in a sample and estimate their relative sizes by using electrophoresis. By comparing a DNA fragment's size to a "scale" of known-size DNA pieces, its exact size can be ascertained. This study may be carried out to determine which students have specific alleles.
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the population projection technique that allocates a projected population expansion to subregional areas is called:
The population projection technique that allocates a projected population expansion to subregional areas is called shift share approach.
What is population?
A community's inhabitants who belong to the same species. A population's makeup is influenced by things like density, sex ratios, birth and death rates, immigration, and emigration.
What is sub region?
A biogeographic region's major division. subregional.
Therefore, the population projection technique that allocates a projected population expansion to subregional areas is called shift share approach.
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genetically engineered mice were bred to express fewer of these receptors to provide an animal model of the glutamate hypothesis of schizophrenia:
The genetically engineered mice were bred to express fewer of these receptors to provide an animal model of the glutamate hypothesis of schizophrenia was triggered by NMDA receptors.
What is gene?
Parent to child transmission of the fundamental component of heredity. The chromosomes in the nucleus of cells contain specific locations where the DNA sequences that make up genes are arranged in a logical order, one after another.
What is schizophrenia?
Chronic recurrent psychotic illness schizophrenia typically first manifests in adolescence and lasts a lifetime. 1,2. Cognitive dysfunction and negative symptoms are examples of prodromal symptoms, which frequently occur before acute psychosis.
The clinical/behavioral finding that NMDA receptor antagonists can cause psychosis in humans and abnormal behavior with symptoms similar to those of schizophrenia in animals led to the development of the glutamatergic hypothesis of schizophrenia. Initial theories highlighted NMDA receptor hypofunction as a potential pathogenetic mechanism.
Therefore, genetically engineered mice were bred to express fewer of these receptors to provide an animal model of the glutamate hypothesis of schizophrenia was triggered by NMDA receptors.
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