The blood flow through vessel B is 1/10th of the blood flow through vessel A. Here option A is the correct answer.
The flow of blood through a vessel is determined by several factors, including the diameter of the vessel, the pressure gradient across the vessel, and the viscosity of the blood. According to Poiseuille's law, blood flow through a vessel is directly proportional to the fourth power of the vessel's radius and the pressure gradient and inversely proportional to the viscosity of the blood and the length of the vessel.
In this scenario, vessel A has a diameter of 1 mm, while vessel B has a diameter of 2 mm. The pressure gradient across vessel A is 10 kPa, while the pressure gradient across vessel B is 1 kPa. However, other conditions are identical, such as the length of the vessels and the viscosity of the blood.
Using Poiseuille's law, we can calculate the blood flow through each vessel. Let's assume that the blood flow through vessel A is Q_A and the blood flow through vessel B is Q_B.
[tex]Q_A = \frac{\pi r_A^4}{8\eta l} \cdot \Delta P_A = K \cdot 10\text{ kPa}[/tex]
[tex]Q_B = \frac{\pi r_B^4}{8\eta l} \cdot \Delta P_B = K \cdot 1\text{ kPa}[/tex]
where r_A and r_B are the radii of vessel A and vessel B, respectively, \eta is the viscosity of the blood, l is the length of the vessels, and \Delta P_A and \Delta P_B are the pressure gradients across the vessels.
The viscosity and length of the vessels are the same in both cases. Thus, we can simplify the equations to:
Q_A = K * 10 kPa
Q_B = K * 1 kPa
where K is a constant.
Complete question:
Blood flow through vessel A, 1 mm in diameter, occurs with a 10 kPa pressure gradient from one end to the other. Blood flow through vessel B, 2 mm in diameter, occurs with a 1 kPa pressure gradient from one end to the other. Other conditions are identical. Compared to vessel A, blood flow in vessel B is ____.
A. 1/10 as fast
B. 1.6 times faster
C. 16 times slower
D. 10 times faster
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abscisic acid (aba) is synthesized in the roots in response to decreased soil water potential. aba then translocates to the leaves, where it rapidly alters the osmotic potential of guard cells. what effect would this have on the stomata and the process of transpiration?
Abscisic acid (aba) is synthesized in the roots in response to decreased soil water potential. ABA then translocates to the leaves, where it rapidly alters the osmotic potential of guard cells. The effect would this have on the stomata and the process of transpiration is: that it slows down transpiration by causing the stomata to close tightly.
Abscisic acid (ABA) is synthesized in roots as a response to decreased soil water potential. ABA translocates to leaves and immediately alters the osmotic potential of guard cells. Abscisic acid (ABA) has a considerable impact on stomata and the process of transpiration. Abscisic acid (ABA) is a hormone that regulates the stomata in plants.
ABA causes the stomata to shut down, reducing the transpiration rate of the plant. The hormone ABA acts on guard cells by altering their ion transfer patterns, resulting in stomatal closure. Transpiration is the process of water loss from plants due to transpiration, and ABA is involved in regulating the loss of water in plants.
ABA inhibits the opening of the stomata by lowering the water potential of the cells, causing them to close. ABA can also signal the cells to lower their water content, which aids in the cells' shrinking and allows the stomata to close more tightly.ABA plays a significant role in plants' growth and survival, especially during drought stress.
In summary, the impact of ABA on the stomata and the process of transpiration is that it slows down transpiration by causing the stomata to close tightly.
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A population of ground-dwelling animals is able to survive on food that is available on the forest floor but receives the best nutrition from fruit found in the canopy of trees. What adaptations will most likely become more common in the population if the availability of the food on the forest floor decreases? What processes would allow these adaptations to take place?
The adaptations of the ground-dwelling animals against limited foods would include longer limbs, stronger grip, and improved agility.
Adaptation against limited foodIf the availability of food on the forest floor decreases, it is likely that adaptations for climbing trees or reaching the canopy will become more common in the population. This could include adaptations such as:
longer limbsstronger gripimproved agility.Over time, individuals with these traits will be more successful in obtaining the fruit they need for better nutrition, and they will pass these traits to their offspring.
The process that allows these adaptations to occur is natural selection, which is the mechanism of evolution that results from the differential survival and reproduction of individuals in a population.
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I am a unicellular eukaryote, and I am an autotroph. What kingdom do I belong in?
Explanation:
As a unicellular eukaryote and an autotroph, you most likely belong to the Kingdom Protista. The Protista kingdom is a diverse group of organisms that includes unicellular eukaryotes, such as algae and protozoa, that can be either autotrophs or heterotrophs. Some examples of autotrophic protists include diatoms and green algae.
7. Many athletes who are in good condition have heartbeat rates that are substantially slower than the 60 to 80 beats per minute (bpm) considered normal for the rest of us. Former cyclist Lance Armstrong routinely had a resting heart rate of about 32 bpm. For a non-athlete, a heartbeat rate this low might be cause for hospitalization, but the rate of blood flow in an athlete's body is not affected by it. How can an athlete's body function normally with such a low heartbeat rate? A. People who are athletes are born with slow heart rates so it is normal for them. B. Exercise strengthens the athlete's heart muscle so more blood is pumped with each beat. C. An athlete's heart rate is higher than normal while exercising so it averages out to normal. D. More capillaries appear in muscle tissue with exercise so blood flow is more efficient O * S
Exercise strengthens the athlete's heart muscle so more blood is pumped with each beat. The correct answer is B.
Athletes who train regularly and are in good physical condition have larger, stronger hearts than non-athletes. This allows their hearts to pump more blood with each beat, which means that their hearts don't have to beat as frequently to maintain a normal rate of blood flow. Additionally, athletes often have more efficient circulatory systems, with more capillaries in their muscles, allowing for more oxygen to be delivered to the tissues. These adaptations allow athletes to maintain a normal rate of blood flow even with a slower resting heart rate. While an athlete's heart rate may be higher than normal during exercise, their resting heart rate can be significantly lower due to the adaptations that come with training and physical conditioning.
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The graph on the left shows how land usage changes in a region as a human population grows. The graph on the right shows biodiversity in the region at the same time.
Which statement is supported by the evidence in the graphs?
A.
As croplands decrease, biodiversity decreases.
B.
As the amount of grassland decreases, biodiversity declines.
C.
An increase in the amount of forest results in declining biodiversity.
D.
An increase in the industrial use of land results in increased biodiversity.
Answer:
Explanation:B. As the amount of grassland decreases, biodiversity declines.
This statement is supported by the evidence in the graphs. As the human population grows, more land is converted from grassland to cropland, urban areas, and other uses. As the graph on the right shows, biodiversity declines as the amount of grassland decreases. This is likely because grasslands are home to a wide variety of plant and animal species, many of which cannot survive in other types of environments. The loss of grassland habitat can have a significant impact on biodiversity, particularly for species that are specialized to this type of ecosystem.
The statement that is supported by the evidence in the graphs is that as the amount of grassland decreases, biodiversity declines. That is option B, as biodiversity is currently under threat from a range of human activities, such as habitat destruction, climate change, pollution, overfishing, and hunting.
What is biodiversity?Biodiversity refers to the variety of living organisms, including plants, animals, fungi, and microorganisms, found in an ecosystem or on Earth. It encompasses the genetic, species, and ecosystem diversity of the planet and is a measure of the richness and complexity of life on Earth. Biodiversity is important for maintaining the ecological balance of the planet and for supporting the many ecosystem services that benefit human societies, such as air and water purification, soil formation, nutrient cycling, and climate regulation.
Hence, the statement that is supported by the evidence in the graphs is that as the amount of grassland decreases, biodiversity declines. That is option B.
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4. Analyze the pedigree to the right. Notice the dots in the center of some individuals? that means they are carriers for the disease. With this information, is this disease likely autosomal dominant, autosomal recessive, x-linked recessive, or x-linked dominant? why?
This pedigree is consistent with autosomal dominant inheritance.
The reason is that affected individuals marrying unaffected individuals have affected children, so the trait is dominant. Males do not pass the trait to all their daughters, so it cannot be X-linked dominant.
What is an autosomal dominant inheritance?Autosomal dominant inheritance is a pattern of inheritance in which a single copy of an abnormal gene (located on one of the autosomes, which are the non-sex chromosomes) from one parent is enough to cause a genetic disorder or disease.
In this inheritance pattern, the gene responsible for the disorder is dominant, meaning that a person who inherits one copy of the abnormal gene will develop the disorder. Autosomal dominant disorders often appear in every generation of an affected family and can affect both males and females equally.
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What will be the importance of labelling your slides
Slide labels make it easier to identify and keep track of your samples during processing and storage.
Labeling your slides can help you more effectively structure your presentation. You can find the slide you need when presenting by providing each slide a distinct and illustrative label.Clarity: Before you even present a slide, labels can assist your audience comprehend its content. They may be able to follow your presentation and remain interested as a result.Accessibility: If you intend to share your presentation with others or post it online, labelling your slides is especially crucial. Your presentation can be more accessible to folks with impairments, such as those who use screen readers, by using clear labels. this small procedure helps in providing efficient result.
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's father keeps bees, and lan spends time observing their behavior. He is especially interested in the bee communication and has even seen the
waggle dance. The waggle dance communicates the location of food to other bees in the hive. All honeybees know the waggle dance from birth.
The waggle dance is an example of a(n)
behavior, because bees can perform it correctly the first time. Bees exhibit
when worker bees provide food and protection for the hive's young.
the gaps are words that I have too fill in.
Because bees can do the waggle dance correctly the first time, without prior learning or experience, it is an example of an intrinsic behavior. When worker bees provide the young of the hive food and protection, bees are being altruistic.
Is the honey bee's Waggle dance an illustration of communication?The only known bee genus that uses nest-based communication, or "dance language," to alert nestmates of the location of resources is the honey bee (Apis sp.).
What the waggle dance refers to How do honey bees behave?Through waggle dancing, a worker honeybee alerts her fellow bees to the position, nature, and characteristics of a nectar-rich flower patch. Honeybees also engage in two more dancing forms. When nectar supplies are abundant, a worker performs the "shake" dance.
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True or false: Glycolysis occurs in the mitochondria of a typical eukaryotic cell producing 4 ATP, 2 NADH, and 2 molecules of pyruvate. Select an answer and submit. For keyboard navigation, use the up
Answer:
False
Explanation:
False. Glycolysis occurs in the cytoplasm of a eukaryotic cell, not in the mitochondria. Glycolysis produces a net gain of 2 ATP, 2 NADH, and 2 molecules of pyruvate. The pyruvate is then transported into the mitochondria for further processing through the citric acid cycle and oxidative phosphorylation to produce additional ATP.
Identify the region on the temporal bone that forms much of the zygomatic arch
Particles in a medium through which a sound wave is traveling _____.
move in a circular motion
move back and forth
move up and down
move randomly
Answer: so it move randomly
A mechanical wave that can be heard as it moves through a medium, such as air, and temporarily displaces the particles of the medium either by rarefaction or compression. reflection The bouncing back of a wave when it hits a surface through which it cannot pass.
Explanation:
What is a wave made of changing electric and magnetic fields that carries energy through matter or through empty space?
A wave made of changing electric and magnetic fields that carries energy through matter or through empty space; transverse; example: light.
can you help me to?
what would u find in a human muscle cell?
Shoots can easily fall over or be carried away by wind or water. What function of the root system prevents this from happening?
OA. Transpiration.
OB. Cell division
OC. Storage
OD. Anchorage
The anchoring function of the root system stops the shoots from toppling over or being swept away by the wind or water.
What role do root hairs play?The surface of exchange between the plant's root system and the soil is increased by their distinctive lateral elongation. The uptake of water and nutrients from the rhizosphere is the primary function of root hairs.
What tasks does the shoot system perform?The buds, fruits, flowers, and leaves that make up the shoot system. The shoot system supports the structure of the plant and the leaves, as well as serving to store nutrients and water for plants.
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What term is the practice of using another scientist’s research without giving proper credit? A. bias B. liability C. plagiarism D. empiricism
C. plagiarism is the practice of using another scientist’s research without giving proper credit. It involves presenting someone else's work or ideas as your own, without providing appropriate attribution or citation.
What is Plagiarism?
Plagiarism is the act of presenting someone else's work, ideas, or words as one's own without proper attribution or permission. It can involve copying text, data, images, or other creative works without permission or without citing the original source. Plagiarism is considered unethical in academic and scientific research, as it undermines the integrity of the scholarly process and violates the norms of intellectual honesty and academic integrity.
In scientific research, plagiarism can take many forms, including using another researcher's ideas or methods without giving proper credit, copying text directly from a source without quotation marks or citation, or self-plagiarism, which involves reusing one's own previously published work without proper attribution. Plagiarism can lead to serious consequences, including damage to one's reputation, rejection of a manuscript or grant proposal, or even legal action.
Plagiarism is considered unethical in scientific research, as it undermines the integrity of the scientific process by failing to acknowledge the contributions of other researchers and by potentially misrepresenting the state of knowledge in a particular field.
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In order for an ovule (egg cell) in a flower to be fertilized and form a viable seed, pollination must occur. In this process, a sperm cell is delivered to the ovule when the pollen grain lands on the stigma and grows a tube, which enters the ovary and discharges the sperm cell to form a diploid zygote when it fuses with the egg cell. Although it only takes one pollen grain to successfully deliver sperm to the egg, numerous pollen grains are generally transferred to the stigma during insect pollination of flowering plants. Which phenotypic traits of pollen would you predict to be selected upon to promote survival and fitness within an insect-pollinated flowering plant?
The phenotypic traits of pollen that would likely be selected to promote survival and fitness within an insect-pollinated flowering plant include characteristics that make the pollen more attractive to the insects that will transfer it from one plant to another.
This may include traits such as size, shape, color, scent, and sugar content. For example, larger pollen grains may be easier for insects to collect and transfer, while a particular color or scent may be more attractive to a certain species of insect pollinator.
Additionally, pollen with a higher sugar content may be more attractive to insects as a food source, potentially increasing the likelihood of successful pollination. Overall, the traits that are selected will likely depend on the specific insects that are the primary pollinators for the plant species in question.
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PLEASE HELP I HAVE BEEN TRYING TO FIGURE THIS OUT A certain plant can have two flower color options: yellow or orange. A geneticist is looking to create a true-breeding yellow folowered plant. When he self pollinates the plant he believes to be true-breeding it results in 50% yellow folwered offspring and 50% orange flowered offspring. Do these results support or refute his belief that his plant is true breeding? Why or why not?
while they look very different, the eastern lowland gorilla and madame berthe's mouse lemur both share primate traits. what are two traits they have in common?
The two traits that the Eastern lowland gorilla and Madame Berthe's mouse lemur share are: highly advanced cognitive abilities and a social structure.
The trait that the Eastern Lowland gorilla and Madame Berthe's mouse lemur have in common is that both are primates. They are both animals in the order of Primates, which includes humans. The first trait is that these animals belonging to the primate group are distinguished by their highly advanced cognitive and sensory abilities.
The animals in this group are all quadrupeds, which means they walk on four legs. The second trait the Eastern lowland gorilla and Madame Berthe's mouse lemur have in common is that both are social animals. These animals have a highly social structure that is maintained through communication, the sharing of resources, and the protection of the group's members.
They share a range of physical and behavioral characteristics, such as intelligence and complex social systems, that enable them to live in complex societies. Besides these traits, the Eastern Lowland gorilla and Madame Berthe's mouse lemur are very different. The Eastern lowland gorilla is a very large primate that lives in the dense tropical rainforests of Central Africa.
Madame Berthe's mouse lemur is a small, nocturnal primate that lives in the dry forests of Madagascar.
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What are cycles and conservation
Answer:As energy moves through an ecosystem, it changes form, but no new energy is created. Similarly, as matter cycles within an ecosystem, atoms are rearranged into various molecules, but no new matter is created. So, during all ecosystem processes, energy and matter are conserved.
Explanation:
Explain global emissions of GHGs. For example, the United States has only a small percentage of the world's population but emits a disproportionate share of global CO2. China has a population of over a billion people. What would happen if China "developed" to the point where most families owned an automobile that emitted CO2?
Although it only makes up roughly 5% of the world's population, the United States is the source of 30% of the world's energy consumption and 28% of its carbon emissions.
Which GHG accounts for the majority or most of the overall US emissions?emissions of carbon dioxide.The most important greenhouse gas released by human activity is carbon dioxide (CO2).Almost 79% of all greenhouse gas emissions caused by human activity in the United States in 2020 were CO2.
Why do USA greenhouse gas emissions tend to be high?Using fossil fuels for transportation, heat, and power is the main cause of human-related greenhouse gas emissions in the United States.The Catalog for U.S. Greenhouse Gas Emissions & Sinks, published by the EPA, keeps track of all U.S. emissions.
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In no more than two typed pages, describe the role, either for good or for bad, of the following in achieving energy sustainability:
-wind, solar, hydro, and wave-powered electricity,
-cars that run on hydrogen fuel,
-electric cars,
-improvements in residential energy efficiency, and
-government policies that mandate new technologies to improve motor fuel efficiency
-please help-
The description of the role, for either for good or for bad, following in achieving energy sustainability is given below:
Electricity and renewable energy (Updated May 2019)
There is strong public support for the use of renewable energy, notably solar and wind energy, which provide power without emitting any carbon dioxide.
Using these for power is dependent on the cost and efficiency of the technology, which is always improving, lowering prices per peak kilowatt and per kWh at the source.
Using solar and wind energy in a grid becomes troublesome at large levels for a variety of complex but now well-established reasons. The supply does not match the demand.
Due to the intermittent nature of solar and wind, backup producing capacity is necessary. System costs rise as the quantity of variable renewables increases.
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Please help asap
What was the major group of organisms that evolved around the same time as Oligochaetes?
Many varieties of aquatic and terrestrial worms make up the phylum Annelida, which includes the subclass of creatures known as Oligochaeta.
What annelid group has the most species of polychaetes and oligochaetes, and how big is the population in reality?More than 6,000 different species of polychaetes have been identified, with free-moving and tube-dwelling types making up about equal numbers. There are roughly 3,250 recognised species of oligochaetes.
What are a couple of oligochaete examples?Oligochaetes are a group of worms that include terrestrial megadrile earthworms (some of which are semiaquatic or fully aquatic), as well as freshwater or semiterrestrial microdrile forms like the tubificids, pot worms, and ice worms (Enchytraeidae), blackworms (Lumbriculidae), and a number of interstitial marine worms.
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What substance released from damaged endothelium triggers the extrinsic coagulation pathway?
The substance released from damaged endothelium that triggers the extrinsic coagulation pathway is tissue factor, also known as factor III.
Tissue factor is a protein that is found on the surface of cells in the blood vessels and is not normally exposed to the bloodstream. However, when there is damage to the blood vessel or surrounding tissue, is released and comes into contact with factor VII in the bloodstream. This contact activates factor VII, which then initiates the extrinsic pathway of the coagulation cascade.
The extrinsic pathway is one of the two pathways that lead to the activation of thrombin and the formation of a fibrin clot. The other pathway is the intrinsic pathway, which is initiated by factors that are present within the blood itself.
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We often see soccer players suffering from muscle crime during the game. As a science student how would you explain this process to your friends
Answer: The a
Explanation:
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the somatic cells of a particular plant each contain a total of 46 chromosomes. how do the chromosomes of this plant differ from the chromosomes of humans, who also have a total of 46
The chromosomes of the plant and humans may differ in their structure, size, and genetic content.
While both the plant and human cells have a total of 46 chromosomes, the specific chromosomes and their genetic information vary between species. In humans, the 46 chromosomes consist of 22 pairs of autosomes and 1 pair of sex chromosomes (XX in females and XY in males). These chromosomes carry the genetic information that determines various traits and characteristics. In contrast, plant species may have a different arrangement of chromosomes, with variations in the number and structure of the chromosomes.
Therefore, it is important to note that the specific differences in chromosome composition and genetic information can vary significantly between different plant species and humans.
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3. The Sun strikes the Earth the most at the Equator and the least at the poles. This causes warm air to_____ from the equator and cold air to____ at the poles.
a. stay, leave
b. leave, stay
c. rise, sink
d. sink, rise
The Sun strikes the Earth the most at the Equator and the least at the poles. This causes warm air to rise from the equator and cold air to sink at the poles. Therefore, the correct answer is (c) rise, sink .
How earth rotates ?
The Earth rotates on its axis, an imaginary line that runs through the North and South Poles, once every 24 hours. This rotation gives rise to day and night and causes the stars, sun, and moon to appear to move across the sky. The Earth's rotation is caused by the initial angular momentum it received from the big bang and the conservation of angular momentum as it continues to rotate.
The direction of rotation is from west to east, which is known as prograde rotation. The speed of rotation is fastest at the equator and slower at the poles due to the Earth's shape and composition. The Earth's rotation plays a significant role in regulating the planet's climate and weather patterns, as well as influencing the behavior of ocean currents and other natural phenomena.
The Earth revolves around the Sun in an elliptical orbit, completing one revolution in 365.24 days, which is one year. This revolution is caused by the gravitational attraction between the Sun and Earth. As the Earth orbits the Sun, it also rotates on its axis, causing day and night. The changing distance between the Earth and Sun throughout the year affects the amount of solar energy that reaches the Earth, which in turn influences the planet's climate and weather patterns.
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I NEED THE MOST BRAINLIEST ANSWER IN THE UNIVERSE
Omi stood outside her house and made two observations of the Moon that were several days apart. Her observations are shown in the diagram above. The light part of the Moon appeared to get larger over time. Why did this happen?
Responses
a
Between the first observation and the second observation, the Moon moved so that Omi was able to see more of the half that faces the sun.
Between the first observation and the second observation, the Moon moved so that Omi was able to see more of the half that faces the sun.
b
Between the first observation and the second observation, the Moon moved closer to the sun so more sunlight reached the Moon’s surface.
Between the first observation and the second observation, the Moon moved closer to the sun so more sunlight reached the Moon’s surface.
c
Between the first observation and the second observation, the Moon rotated so that more of the light-colored rock on the Moon’s surface faced Earth.
Between the first observation and the second observation, the Moon rotated so that more of the light-colored rock on the Moon’s surface faced Earth.
d
Between the first observation and the second observation, Earth moved so its shadow was blocking less of the Moon so Omi was able to see more of it.
Between the first observation and the second observation, Earth moved so its shadow was blocking less of the Moon so Omi was able to see more of it.
Answer:
The reason why the light part of the moon appeared to get larger over time is that between the first observation and the second observation, the moon moved so that Tania was able to see not of the half that faces the sun.
It should be noted that from the observation that Tania made, the light part of the moon appeared to get larger over time.
The reason for the above want due to rotation but rather because the moon moved so she was able to see not of the half that faces the sun.
Explanation:
How do short generation times for bacteria and viruses cause natural selection to act quickly?
Please help! I asked this question an hour ago on here and no one answered! I will reward with THIRTY POINTS!!!
10.
Soil, water, forests, oil, iron, and coal are all examples of
scarce resources
capital resources
human resources
natural resources
Answer:
Natural resources
Explanation:
what is the order for the sexual life cycle for zygomycetes ? group of answer choices plasmogamy, meiosis and germination, karyogamy, germination meiosis and germination, plasmogamy, karyogamy, germination karyogamy, germination , meiosis and germination, plasmogamy germination , meiosis and germination, plasmogamy, karyogamy germination, plasmogamy, karyogamy, meiosis and germination
1. Plasmogamy
2. Karyogamy
3. Meiosis and germination
Therefore, the correct option is:
E. Plasmogamy, karyogamy, meiosis and germination.
what is a polypeptide? which monomers compose a polypeptide.
Answer:
A linear organic polymer consisting of a large number of amino-acid residues bonded together in a chain, forming part of (or the whole of) a protein molecule. The monomers that join to form polypeptides are amino acids.