Answer:
Fovea centralis
Explanation:
The fovea centralis is also a part of the structures found in the eyes.
The fovea centralis is characteristics as a small, central pit made up of closely packed cones and no rods in the eye.
It is found in the center of the macula lutea of the retina. It is the location that has the highest visual acuity and best color vision.
The quarrel between the Capulets and Mantagues has been going on for a long time when the play opens.
OTrue
O False
Answer: True
Explanation:
At the end of _____ and cytokinesis there are four haploid cells. At the end of _____ and cytokinesis there are four haploid cells. prophase II anaphase I telophase II interphase prophase I
Answer:
At the end of telophase II and cytokinesis, there are four haploid cells.cells.
Explanation:
During telophase II the sister chromosomes separate from each other and move to the opposite ends of the cell. Once that the chromosomes are in the opposite ends, the cytokinesis starts, this is the division of the cytoplasm that will give two daughter haploid cells.
We have to remember that there will be four haploid cells because there are two cells, which are the result of meiosis I, that will go into meiosis II to give these four daughters haploid cells. Also, the phases in meiosis I and II are very similar. Both of them have prophase, metaphase, anaphase, and telophase.
Amphibian species worldwide have been in decline. A significant proportion of the decline seems to be due to the spread of the chytrid fungus, Batrachochytrium dendrobatidis (Bd). Chytrid sporangia reside within the epidermal cells of infected animals, animals that consequently show areas of sloughed skin and are lethargic. The infection cycle takes four to five days, at the end of which zoospores are released from sporangia into the environment. In some amphibian species, mortality rates approach 100%. Apart from direct amphibian-to-amphibian contact, what is the most likely means by which the zoospores spread from one free-living amphibian to another?
Answer:
Water
Explanation:
The most likely means is water by which the zoospores spread from one living amphibian to another because amphibians lives in water and these zoospores can move in water and reach another amphibian causing infection to them. Amphibians are the organisms which lives both land and water. They requires water for reproduction so they lives at wet places. Zoospores have a unique structure which able them to swim in the water. So water is a great source of dispersal of zoospores from amphibian to amphibian.
why the process of photosynthesis is important to life on Earth?
Answer:
Photosynthesis captures light energy from the Sun and stores it in the bonds of glucose, which is then used during cellular respiration to drive the formation of ATP in all plants and animals.
hope this can help you .
what is a carbon foorprint
Answer:
Definition: The amount of carbon dioxide and other carbon compounds emitted due to the consumption of fossil fuels by a particular person, group, etc.
What was one of the first rocks ever formed? Is it still popular today?
Answer:
One of first rock ever formed is faux-amphibolites.
Explanation:
Faux amphibolites were discovered by researches and it believed to be formed as a result of volcanic activities. It is also believed to be prevalent between igneous and metamorphic rock locations as a result of volcanic deposits.
This type of rock however isn’t popular today due to decreased volcanic activities and eruptions.
The cells in this part of a plant form long, vertical tubes. What is the most
likely relationship between the structure and function of these specialized
cells?
A. The tubes allow the plant to absorb sunlight for photosynthesis.
B. The tubes prevent potential damage to the leaves caused by
strong winds.
C. The tubes prevent water loss from the leaves.
D. The tubes allow water and nutrients to be transported throughout
the plant
Answer:
D. The tubes allow water and nutrients to be transported throughout
the plant.
Explanation:
option D supports the description of the cells. The long , vertical tubes transport water and nutrients and are most likely xylem and phloem vessels.
option A is wrong since, chloroplasts inside the cell helps in absorbing sunlight.
option C is also wrong, because water loss is controlled by the stomata in the leaves and they are not long tubes.
option B could possibly be right but option D is better suited.
Answer:
The tubes allow water and nutrients to be transported throughout
the plant.
Explanation:
Ape-x
0cm3 of acid were mixed with 60cm3 of alkali in an insulated container. The average temperature of the two solutions before they were mixed was 19.5°C. The temperature after mixing was 27.5°C. Was this an exothermic or an endothermic reaction?
Answer: Endothermic reaction.
Explanation: An endothermic reaction is any chemical reaction that absorbs heat from its environment. In this reaction, the temperature of the mixture raised from 19.5°C to 27.5°C, which means there was an increase of heat, ergo, it is an endothermic reaction.
what are the materials needed for respiration to occur
Answer:
Glucose + oxygen → Carbon Dioxide + Water
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂0
Explanation:
Glucose and oxygen and the reactants required for respiration to occur and as a result of respiration carbon dioxide and water are both formed as products.
a country is likely to have a high carrying capacity if
Answer:
food availability, water, and space.
Explanation:
A country’s carrying capacity is measured by the amount of individuals which are being able to be contained in her land area. The carrying capacity is dependent on important factors such as food availability, water and space.
When these factors are present then a country’s carrying capacity would surely be on the rise due to the necessity of man to be in areas with a high level of survival.
Which feature is created by wave erosion?
O loess
O delta
O rill
O stack
Answer:
stack
Explanation:
A stack is a rock in the sea near a coast that is formed by wave erosion.
A feature created by wave erosion is stack. Option D. This is further explained below.
What is wave erosion?Generally, Wave erosion is simply defined as waves creating a variety of landforms along a shoreline. Sea cliffs occur when waves erode rock, resulting in high slopes.
In conclusion, a stack is a feature of wave erosion.
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Match each term about wind erosion and deposition with its description.
abrasion
a deposit of fine, mineral-rich soil that is
good for agriculture
deflation
sand deposited against an obstruction
sand dune
the process by which wind moves particles
that are loose
the process by which wind wears down
solid objects
loess
loess - a deposit of fine, mineral-rich soil that is good for agriculture
deflation - the process by which wind moves particles that are loose
sand dune - sand deposited against an obstruction
abrasion - the process by which wind wears down solid objects
Plz mark brainliest :)
Answer:
abrasion- the process by which wind wears down solid objects.
sand dune- sand deposited against an obstruction.
deflation- the process by which wind moves particles that are loose.
loess- a deposit of fine, mineral-rich soil that is good for agriculture.
Explanation:
edge 2020
Pea plants are tall if they have the genotype TT or Tt, and they are short if they have the genotype tt. A tall plant is mated with a short plant. Half the offspring are tall, and half are short. This allows us to conclude that the tall plant is __________.
Answer:
heterozygous
Explanation:
The chemical equation of photosynthesis includes 602. Which best describes this substance?
a solid used during photosynthesis.
a gas used during photosynthesis.
a liquid produced during photosynthesis.
a gas produced during photosynthesis.
Answer:
The correct option is;
A gas produced during photosynthesis
Explanation:
The chemical reaction of photosynthesis is given as follows;
6CO₂(g) + 6H₂O(l) + Energy from light → C₆H₁₂O₆(s) + 6O₂(g)
Therefore, six molecules of gaseous carbon dioxide (CO₂) combine withe six molecules of liquid water (H₂O) in the presence of energy from Sunlight to produce one molecule of solid glucose (C₆H₁₂O₆) and six molecules of gaseous oxygen (O₂)
The 6O₂ is the gaseous oxygen produced as a byproduct of photosynthesis
Answer:
D
Explanation:
Which is the first step that geologists must do to compare rock layers at distant locations? 1.find the absolute age of rocks at both locations 2.compare a layer at one location to layers at other locations 3.identify index fossils in one or more layers at one location 4.collect fossils from different locations to study the organisms’ lifestyles
Answer:
2.compare a layer at one location to layers at other locations
Explanation:
Comparing rock layers in distant places can be a challenge for geologists since these layers may have different environmental factors that caused different transformations in them.
Therefore, when it is necessary to establish a comparison between layers of rocks in different ligands, geologists must establish steps to make an efficient comparison and have results consistent with reality. To do this, they must first compare a layer in one location with layers in other locations, assign relative age to a layer in one location, and identify index fossils in one or more layers in one location.
To compare rock layers at distant locations is geologist should ; Identify index fossils in one or more layers at one location ( 3 )
When geologists study rock layers at different locations they try to determine the ages of the rocks by studying the different layers from different locations. this task could be very challenging. therefore to make their study easy the first step geologists should take is to Identify index fossils in one or more layers at one location
Comparing layers at different locations can be use to estimate the relative ages of the rocks closer to reality but it a very daunting task.
Hence we can conclude that the first step that geologists must take to compare rock layers at distant locations is Identifying index fossils in one or more layers at one location
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Phospholipids are molecules that have two regions, the head and the tail, with distinct chemical properties. Classify the descriptions as characteristics of the heads or tails of phospholipids.
Answer:
The head is described as being hydrophilic and polar . Whereas the tail region is hydrophobic (i.e., it does not interact with water) and is rich in hydrocarbons.
Explanation:
These particular properties of the phospholipid molecule is what allows for the structure of membrane to be possible. The phospholipid bi-layer is what holds the cell together so its importance cannot possibly be overstated!
Some viruses can be crystallized and their structures analyzed. One such virus is yellow mottle virus, which infects beans. This virus has a single-stranded RNA genome containing about 6300 nucleotides. Its capsid is 25-30 nm in diameter and contains 180 identical capsomeres.If the yellow mottle virus begins its infection of a cell by using its genome as mRNA, which of the following would you expect to be able to measure?
A) replication rate
B) transcription rate
C) translation rate
D) formation of new transcription factors
The correct answer is 9 proteins form each of the 20 facets of this virus. A capsid is the protein shell that surrounds a virus. A capsomere is the subunit of the capsid. Depending on the virus, capsomeres arrange in many different shapes to form the capsid. The yellow mottle virus has 20 facets, this means that it has an icosahedral capsid. Since it contains 180 identical capsomeres, we can conclude that 9 proteins form each facet.
In algae and plants, photosynthesis happens in the
vacuoles
mitochondria
O chloroplasts
chromosomes
Answer:
3 one
Explanation:
chloroplasts
is located inside the cells
Answer:
Chrloroplasts
Explanation:
Photosynthesis is a process that certain organisms (plants, algae, and special bacteria) undergo to produce their own food. They turn carbon dioxide, water, and light energy from the sun into oxygen and glucose.
The glucose, or sugar, becomes the food for the plant. The chloroplasts in the cells are the site of photosynthesis.
Therefore, the correct answer is 3. chloroplasts.
how did autotroph and heterotroph lead to a two kingdom classification system
Answer:Autotrophs are organisms that can produce their own food from the substances available in their surroundings using light (photosynthesis) or chemical energy (chemosynthesis). Heterotrophs cannot synthesize their own food and rely on other organisms — both plants and animals — for nutrition. Technically, the definition is that autotrophs obtain carbon from inorganic sources like carbon
Explanation:
If a forest experiences a fire, which adaptation would most likely help an organism survive?
Answer:
cellulose
Explanation:
A dependent variable is:
A measured to show the effect of a change
B kept the same to make and experiment a fair test
C collected to draw conclusions
D changed to test a hypothesis
Answer:
A. measured to show the effect of a change
Explanation:
A dependent variable is the variable tested in an experiment to show how the change in the independent variable affects the dependent variable.
Answer:
Dependent variable is the variable that changes. It is the only thing that changes in an experiment. That way the if a change occurs the reason is obvious because only one thing changed. The answer would be A.
Fossil fuel and nuclear plants both heat water in order to turn _____?
O A. turbines
O B. solar panels
DO O C
O C. reserves
D. windmills
Answer:
i thinkits no a .to turn turbines.
1. What is the significance of the reason rule and sequencing?
Explanation:
A biological sequence may be defined as a single but a continuous molecule of a protein or a nucleic acid. It can be a genetic map or an actual sequence of the amino acids or the nucleic acids. It can also be some more complicated data structure building of a composite view from other entries.
Sequencing is mostly used in molecular biology for studying the genomes and proteins that they encode.
The reason rule is the law of antitrust that says that a trade practice which violates the Act of Sherman only if that practice is the unreasonable restraint of some trade which is based on some factors.
What is the best conclusion? The rate of cellular respiration in germinating peas is exactly one thousand times the rate of ATP production. Germinating peas at 10ºC create carbon dioxide at a rate of 0.01 mL/min during ATP production. Germinating peas at 20ºC have a higher rate of cellular respiration than germinating peas at 10ºC. The rate of cellular respiration cannot be measured without knowing the rate of ATP production.
The given question is incomplete, the complete question is:
During germination, peas sprout and grow. The data table shows the carbon dioxide produced during the germination period of peas under different conditions. Condition Rate of carbon dioxide produced (mL/min) Germinating peas, 10ºC 0.01 Germinating peas, 20ºC 0.02 What is the best conclusion? The rate of cellular respiration in germinating peas is exactly one thousand times the rate of ATP production. Germinating peas at 10ºC create carbon dioxide at a rate of 0.01 mL/min during ATP production. Germinating peas at 20ºC have a higher rate of cellular respiration than germinating peas at 10ºC. The rate of cellular respiration cannot be measured without knowing the rate of ATP production.
Answer:
The correct statement is that at 20 degree C, the germinating peas exhibits a higher rate of cellular respiration in comparison to the germinating peas at 10 degree C.
Explanation:
The process of respiration results in the production of carbon dioxide, respiration refers to a chemical reaction that generates water, carbon dioxide, and energy by undergoing oxidation of the glucose molecules. This phenomenon plays an essential role in the life of the organisms for obtaining energy from the food they consume to perform daily activities.
From the question, it is evident that the peas, which were germinating at 20 degrees C exhibit a higher rate of cellular respiration as they are generating 0.02 milliliters of carbon dioxide in a minute, while on the other hand, the germinating peas at 10 degrees C are giving rise to 0.01 milliliters of carbon dioxide in a minute.
Answer:
Germinating peas at 20ºC have a higher rate of cellular respiration than germinating peas at 10ºC.
Explanation:
Has the Clements successional theory been subjected to peer review and publication?
Answer:
Yes the Clements successional theory has been subjected to peer review and publication
Yes, the Clements successional theory been subjected to peer review and publication.
What is Clements successional theory?Plant succession was characterised by Clements as a developmental process that, during the course of a community, it went through a well-defined series of stages that, in the end, resulted in a mature community, also known as the climax community. The climatic conditions that determined the climax community's existence manifested themselves in the form of an indicator and an expression of that community.
His hypothesis of community formation, sometimes known as plant succession, is what brought Clements the most fame. Even after World War II, Clements' organicism and physiological perspective were still around, albeit in a watered-down version, despite the fact that it was extensively discredited by later ecologists.
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While you and your classmate are studying for your biological anthropology midterm, your classmate tells you that the bones of Lucy, a famous australopithecine specimen that dates to about 3.2 million years ago, were dated based on carbon-14 analysis. Why is this incorrect?
The options for this incomplete question are :
Fossils are living organisms that have wholly or partially been transformed into rock.
Lucy does not have bones with organic material necessary for carbon-14 dating.
This specimen is also far too old for C-14 dating to be accurate, as well as for any other technique but palaeomagnetic dating.
Your classmate is therefore incorrect for all of the reasons listed. (All of the above)
Answer:
The correct answer is - all of the above reasons.
Explanation:
Fossils are living life forms that have completely or mostly been changed into the rock during the process of fossilization. Lucy doesn't have bones with organic material that are essential to use the carbon 14 dating technique.
This example is additionally very old for C-14 dating to be exact, just as for some other method, however, palaeomagnetic dating can do the job of dating in this case.
Thus, the correct answer is - all of the above reasons.
Children living at high altitudes develop larger chest cavities by adulthood than children living at lower altitudes. This is an example of Group of answer choices environmental adaptations that occur at the individual level. acclimatization at the individual level. developmental adaptations that occur at the level of the individual during critical life stages. inheritance of increases in lung volume by high-altitude populations.
Answer:
developmental adaptations that occur at the level of the individual during critical life stages.
Explanation:
High altitudes is characterized by low amounts or concentration of oxygen. The body parts especially the lungs have to adjust and the lungs are usually expanded to allow for more oxygen for the body metabolism.
This is why Children living at high altitudes develop larger chest cavities by adulthood than children living at lower altitudes and is an example of developmental adaptations that occur at the level of the individual during critical life stages.
Un marido acusa a su esposa de infidelidad y pide la custodia de sus dos primeros hijos mientras que rechaza al tercero afirmando que no es suyo. El primero hijo es del grupo sanguineo O, el segundo del grupo sanguineo B y el tercero del grupo AB. El marido es del grupo sanguineo O y la mijer del grupo B ¿crees que la acusacion del hombre esta fundada?
Answer:
La afirmación es correcta, el hijo con el grupo sanguíneo AB no es suyo.
Explanation:
Siendo el padre del grupo sanguíneo O, sabemos que el gen es recesivo por lo que la codificación para dicho gen, a su vez es homocigota.
Dicho esto el cromosoma Y (u X), del padre aporta O a sus hijos.
Siendo la madre del grupo sanguíneo B, podría ser homocigota dominante, aportando únicamente B, pero cómo B domina a O, nunca podría haber un hijo con grupo sanguíneo O. En conclusión la madre es heterocigota dominate, donde el gen codifica para O y para B. Finalmente podrán tener dos hijos:
- Un hijo que será O, ya que los cromosomas de madre y padre aportarán el O por igual
- Y el otro hijo será B, ya que el padre aportará O, pero el gen B de la madre es el dominante.
No hay forma que hayan tenido un hijo con grupo sanguíneo AB ya que el gen para grupo A no está en ningún padre
Which land feature supports the theory of continental drift?
canyons
volcanoes
coal fields
Oceans
Help plz
Answer:
The correct option is;
Canyons
Explanation:
The theory of continental drift, which was a 1596 hypothesis of Abraham Ortelius, is that the continents on Earth have had relative motion with one another over a period of geologic time such that the continents looks to haven drifting motion over the bed of the ocean
Evidence of the motion of the continents was first presented by Alfred Wegener in 1912 and continuing exploration of the ocean floor by Harry Hammond Hess has revealed that the there are lots of canyons, sea mountains such that the crust of the Earth moved apart on the facing sides of the ocean ridge which where evidence of sea floor spreading supporting the theory of continental drift.
THE ANSWER IS COAL FIELDS NEARLY EVERYONE POSTING THIS PUT CANYONS AND IS NOT RIGHT. I just took the quiz and put coal fields and got it right. No gimmicks. This the true answer.
The pathogenesis of tuberculosis includes the entrance of mycobacteria into the lungs and the resulting of which of the following? (Select all that apply.) Calcification Ghon tubercles Formation of granulomas Activation of macrophages Antigen-antibody complexes
Answer:
The macrophages have a in the calcification process, which generates the inflammatory processes. The Ghon tubercles is a lung lesion caused in tuberculosis that consists of a focus of calcification in conjunction with a lymph node infection. A granuloma is a mass of immune cells that forms when the immune system tries to isolate foreign substances.Macrophages can be activated by a variety of stimuli during the immune response. The antigen-antibody (Ag-Ac) reaction is one of the molecular reactions in the body's immune response.Explanation:
Tuberculosis is a disease caused by Mycobacterium tuberculosis, a bacterium that almost always affects the lungs. When the active form of the disease is present, symptoms (cough, fever, night sweats, weight loss, etc.) can be mild for many months. If not treated properly, Tuberculosis can be fatal.
Macrophages are a type of white blood cell found in the blood and they are the first body's defense against foreign substances. So they are effector cells of the immune system, the main players in the innate immune response.
When M. Tuberculosis infects a person, it attacks this first-response immune cells in the lungs, the macrophages. When they recognize these pathogens, macrophages produce the cytokines IL-1 and TNF-α, which cause the inflammation itself by acting on the endothelial cells of the nearby blood vessels to allow the transendothelial migration of the leukocytes. The inflammation t is a non-specific response to environmental aggressions, and its purpose is the isolation and destruction of the damaging agent, as well as repairing the damaged tissue or organ.
The macrophages have a in the calcification process, which generates the inflammatory processes. The Ghon tubercles is a lung lesion caused in tuberculosis that consists of a focus of calcification in conjunction with a lymph node infection. These lesions are especially common in children and may retain viable bacteria, so they are sources of disease transmission and may also be associated with classic tuberculosis reactivation after several years of inactivity.A granuloma is a roughly spherical mass of immune cells that forms when the immune system tries to isolate foreign substances that it has been unable to eliminate. Therefore it is a special type of inflammation that can occur in a wide variety of diseases. Infections that are characterized by granulomas include tuberculosis, but also include for example leprosy, histoplasmosis, cryptococcosis, coccidioidomycosis, blastomycosis, and cat scratch disease.Macrophages are usually in a resting state, they can be activated by a variety of stimuli during the immune response. Antigen phagocytosis serves as an initial stimulus; however, macrophages and their activity can be increased by cytokines secreted by, or through contact with, helper T-lymphocytes. One of the most powerful macrophage activators is gamma interferon. They are also able to recognize molecular patterns associated with pathogens. M. tuberculosis is a pathogen that contains Pathogen-associated molecular patterns (PAMPS), which are small sequences of molecules that repeat in groups of pathogens. They are recognised by Pattern-recognition receptors (PRRs), which include the Toll-like receptor (TLRs) family or the NOD-like receptors (NLRs). Once the receptors found in the macrophages recognize these PAMPS, the macrophages are activated are ready to perform an immune response.The antigen-antibody (Ag-Ac) reaction is one of the molecular reactions in the body's immune response. The concept refers to the specific binding of an antibody to an antigen to inhibit or delay its toxicity. When the macrophage recognizes a pathogen, it phagocytes it and degrades it, and presents its peptides to a T cell. This can activate a cytotoxic response, causing apoptosis of infected cells. Or, the T cell may activate a B cell to produce antibodies. Antibodies are proteins whose function is to detect any foreign elements that may enter the body. They normally detect specific parts of these elements, for example, proteins from the surface of bacteria or viruses. When antibodies bind to these foreign proteins, they act as a marker, making it easier for them to be recognised and eliminated by the cells of the immune system.