Explain the functions of a villi

Answers

Answer 1

Answer

Villi are small finger-like projections found inside the inner walls of the small intestine. They v increase the surface area for absorption of the digested food. Each villus has a network of thin and small blood vessels close to its surface. The surface of the villi absorbs the digested food materials

Explanation:


Related Questions

What happens to the cells of a person who has cancer?

Answers

Explanation:

Cancer happens when cells that are not normal grow and spread very fast. Normal body cells grow and divide and know to stop growing. Over time, they also die. Unlike these normal cells, cancer cells just continue to grow and divide out of control and don't die when they're supposed to.

Cancer cells continue to grow and divide out of control and don't die when they're supposed to.

17.
Why is it important to conserve the biodiversity of Earth?
A. to decrease the amount of global predator populations
B. to decrease the stability of major global ocean currents
C. to increase the stability of ecosystems during environmental
changes
D. to increase the amount of nonrenewable resources located in the
lithosphere

Answers

The answer is C: to increase the stability of ecosystems during environmental changes!

Put these in order NO LINKS NO LINKS
Drag the structures to the appropriate boxes in order that oxygen would travel from the outside of your body to the blood stream
Choices: bronchi, nasal cavity, capillaries, trachea, pharynx, aveoli, bronchioles
IF YOU DON'T KNOW THE ANSWER, DON'T ANSWER THIS QUESTION

Answers

Answer:

Nasal Caviry

Trachea

Pharynx

Bronchi

Bronchioles

Aveoli

Capillaries

Which term represents animals without backbones?
invertebrates
heterotrophs
autotrophs
vertebrates

Answers

Answer:

Invertebrates.

Explanation:

Invertebrate refers to animals with no backbone.

Answer:

invertebrates

Explanation:

The correct answer would be invertebrates or option A because those animals are called like that because they don't have backbones.

True or false: Yeast is a bacteria cell.

True or False: An Inoculation Loop is a tool used when transferring/culturing bacteria.

True or False: A BSC focuses on limiting the chance of a liquid contaminating a worker.

Answers

false

Explanation:

its a living organism

Use the table to answer the following question.

Gravity and inertia are the two forces that keep Earth in its orbit as it travels around the Sun. What would happen if the force of inertia disappeared?


A.

Earth would break apart.


B.

Earth would be pulled into the sun.


C.

Earth would leave the solar system.


D.

There would be no changes in Earth's orbital path

Answers

B, without mass, there wouldn’t be anything holding the earth together. Without mass, the earth wouldn’t stay in orbit around the sun. The earth would simply float apart.

Answer:

D.

Explanation:

if the force of inertia disappeared there would be no changes in earth's orbital path.

the reasons is that earth would stop moving as soon as there was no longer any force being applied

Which statement regarding polymers is TRUE?

1. Polymers have only a few uses.
2. All polymers are made entirely of carbon and hydrogen.
3.Many polymers do not decompose and recycling them can be difficult.
4. Polymers are made by separating crude oil during fractional distillation.

Answers

answer is 3 because it’s true

MULTIPLE-SELECT QUESTION: CHOOSE TWO
CORRECT ANSWERS
STRUCTURES AND FUNCTIONS


A. There is not enough information to build the cladogram

B. The frog is placed in Position A on the cladogram above.

C. The pig is placed in Position B on the cladogram above.

D. The gorilla is placed in Position D on the cladogram above.

Answers

Answer:

B and D

Explanation:

B and D definitely. Kinda late to it

pls help i literally have no idea how to read a cladogram????

Answers

I think the first answer would be A B because they r from the same branch and if u look at the images they r both birds so they would hve to be closely related
Then the second one, a trait that all have would be a tail.
Then the last one, could be feathers as only the birds hve it but not the squirrel. U could even put down a beak because squirrels don’t hve a beak.

Answer:

1.the most related organism are A and B.

2.they could have a similar anatomy

3.animal A and B are birds and C is a mammal

Please help me answer this.
the questions are.

In part 1 of her exercise warmup, her heart rate ____ because ____ (include oxygen and homeostasis in your answer)

In part 3 of her exercise, endpoint/ cool down, her heart rate ____ because ______ (include oxygen and homeostasis in your answer)

Answers

Part 1:
Increased, because she needed to pump enough blood to transport the oxygen around to her organs, and maintain homeostasis

Part 3:
Decreased, since she didn’t need to pump as much oxygen to maintain homeostasis since her physical activity decreased.

Discuss 3 different types of mutations that can happen

Answers

Answer:

Explanation:

Un cambio en la secuencia de bases en el ADN o ARN se conoce como mutación . ¿La palabra mutación te hace pensar en ciencia ficción y monstruos con ojos de insecto? Piensa de nuevo. Todos tienen mutaciones. De hecho, la mayoría de las personas tienen decenas o hasta cientos de mutaciones en su ADN. Las mutaciones son esenciales para que ocurra la evolución. Son la fuente principal de todo el material genético nuevo -nuevos alelos - en una especie. Aunque la mayoría de las mutaciones no tienen efectos en los organismos en que ocurren, algunas mutaciones son beneficiosas. Incluso las mutaciones dañinas rara vez causan cambios drásticos en los organismos.

there are 3 types of mutations, base substitutions - single base mutations are called point mutations. Point mutations are the most common type of mutation and there are two other types. point mutations occur in DNA sequence seconding proteins are either silent, missense or nonsense. Deletions is the second type of mutation, this results when one or more base pairs are lost from the DNA. If one or two based are deleted the translation frame is altered resulting in a garbled message and nonfunctional product. A deletion of three or more bases leave the reading frame intact. A deletion of one or more corona result in a protein missing or more amino acids. this may be deletions or not. And lastly insertions this is when you have additional base pairs which may lead to frameshifts depending on whether or not multiples or three base pairs are inserted. combinations of insertions and deletions leading to a variety of outcomes are also possible.

The diving bell spider stores air underwater in a net of silk explain how this could be more advantageous than having gills

Answers

Answer:

Explanation:

Using its web as a gill, the diving-bell spider can live underwater with only occasional visits to the surface. The arachnid (Argyroneta aquatica) breathes air from a bubble that it grabs from the surface of water using fine hairs on its abdomen.

True or False: An Inoculation Loop is a tool used when transferring/culturing bacteria. *

Answers

Answer:

Yes this fact is true

Explanation:

I hope this helps

I believe that is true

3. Synthesize in your own words, explain why scientists believe that threats to amphibians present a warning about a number of environmental threats to Earth's biodiversity Refer to the Case Study.​

Answers

Explanation:

Scientists give three reasons. First, amphibians are sensitive biological indicators of changes in environmental conditions such as habitat loss, air and water pollution, ultraviolet (UV) radiation, and climate change.

Amphibians are sensitive biological indicators of environmental circumstances such as habitat loss, pollution of the air and water, ultraviolet (UV) radiation, and temperature change.

What is biodiversity?

The variety and variability of life on Earth is referred to as biodiversity or biological diversity. A measure of variation at the genetic, species, and ecosystem levels is called biodiversity.

Biodiversity refers to the variety of all the diverse species of organisms that dwell on our planet, including the plants, animals, insects, and microorganisms.

Each of these things exists in a delicate balance and coexists with the others in ecosystems that nourish and sustain life on earth.

Amphibians are sensitive biological markers of changes in environmental conditions like temperature, UV radiation, habitat loss, and air and water pollution.

Thus, scientists believe that threats to amphibians present a warning about a number of environmental threats to Earth's biodiversity.

For more details regarding biodiversity, visit:

https://brainly.com/question/13073382

#SPJ2

how do tortoises differ among the galapagos islands? what causes these differences?

Answers

Answer:

How did tortoises and birds differ among the islands of the Galapagos? The tortoises on the Galapagos Islands all had different shaped shells; therefore they were different species of the same category of tortoises. ... Darwin found several types of small, ordinary brown birds.

Hope it helps :D

Explanation:

The range of waves that includes radio waves, microwaves, infrared, visible light, ultraviolet light, X-rays and gamma rays is called-

Answers

Answer:

The range of waves that includes radio waves, microwaves, infrared, visible light, ultraviolet light, X-rays and gamma rays is called

electromagnetic energy/spectrum.

please help!!!!!!!!!!!

Answers

Answer:

Typically, the nucleus of a cancer cell is larger and darker than that of a normal cell and its size can vary greatly. Another feature of the nucleus of a cancer cell is that after being stained with certain dyes, it looks darker when seen under a microscope

Explanation:

In contrast to normal cells, cancer cells don't stop growing and dividing, this uncontrolled cell growth results in the formation of a tumor. Cancer cells have more genetic changes compared to normal cells, however not all changes cause cancer, they may be a result of it.

3. What is the definition of recessive and dominant?
4. What is the difference between genotype and phenotype? Write a 5 sentence
paragraph describing the difference between the two.

Answers

Answer:

Recessive: relating to or denoting heritable characteristics controlled by genes which are expressed in offspring only when inherited from both parents.

Dominant: Refers to a trait that appears more frequently than another trait, resulting from interactions between gene alleles.

Explanation:

Genotype and phenotype differences

Genotype Phenotype

The hereditary information of the organism in the form of gene in the DNA and remains the same throughout the life. The characters of an organism which are visible are known as phenotypes.

Same genotype produces same phenotype. Same phenotype may or may not belong to same genotype.

Present inside the body as genetic material. Expression of genes as the external appearence.

The genotype is inherited from the parent to the offspring. The phenotype is not inherited from the parent.

It can be determined by scientific methods such as the polymerase chain reaction. It can be determined by observing the organism.

It is affected by genes. It is affected by genotype and environmental conditions.

For eg., Blood group, eye colour, height, genetic diseases. For eg., Weight, physique, beak of birds

What makes a species successful in an ecosystem?​

Answers

Answer:

Beside the intensive loss of forest cover [2], fragmentation of the pristine remnants further affects species [3] and limits their ability to move into adequate areas. Thus the ability to cope with altered landscapes is crucial for the persistence of a species, especially in the face of climate change.

Last month, Sarah documented how her city suffered from acid rain. What type of pollution should the people in Sarah’s city try to control?

Answers

Answer: I need more information to answer.

Explanation:

Air pollution would be a big thing that the city should try to control. Acid rain releases chemicals that are very bad for the environment

Kelp (seaweed) is in the
kingdom
A
Archaea
B
Protista
с
Bacteria
D
Fungi

Answers

Answer:

Seaweed is apart of the kingdom B, Protista

Explanation:

This is because seaweed is an algae, which is a multicellular photosynthetic protist.

Kingdom Protista is a unique group that  dont belong in the plant, animal or fungi kingdoms. Many are unicellular organisms as well, but some different algae forms can be multicellular

Hope this helps! Have a good rest of your day!!

Your answer that your looking for is B.

hellllllllllllpp meeeeeeeeee pllllllllsssss..

Answers

Answer:

Yes; When the cell grows larger,, it needs more cell membraine to prepair for mitosis. Without this process, the cell would rupture.

Yes; The cell would not be able to grow if the surface area stayed the same.

Hope this helps ^v^

plz help
Project: Evaluating Human Impact on the Environment

Answers

Answer:

1

Explanation:

Answer:

look on quizlet

Explanation:

What are the seven taxon characteristics of a human again?
K
ד ר ת

Answers

Answer:

I believe they are  Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

Explanation:

How many amino acids are attached to one tRNA?

Answers

Answer:

One amino acid

Explanation:

There is a species of frog on an island that puzzles scientists. The proportion of frogs with no stripes is greater than the proportion of frogs with
stripes. This is puzzling because the unstriped trait is recessive (s), and the striped patterns are due to dominant alleles (S). Also, natural selection
seems to support the striped trait.
How do genetic factors most likely account for the proportion of traits in the frog population?
A. Most of striped frogs and unstriped frogs have the genotype ss.
OB. Most of striped frogs have the genotype SS and the unstriped frogs have the genotype ss.
C. Most of striped frogs have the genotype SS and the unstriped frogs have the genotype Ss.
OD. Most of striped frogs have the genotype Ss and the unstriped frogs have the genotype ss.
Hi

Answers

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Should ever come back...Should ever come back....

Mutated codons code for what in silent mutations?

Answers

Answer:

Code for the same amino acid as the original codon

Explanation:

Mutation, which is any alteration in the nucleotide sequence of a gene, can occur when there is a replacement of base nucleotides. This is called SUBSTITUTION MUTATION. Substitution mutation can either lead to missense, nonsense or silent mutations.

As stated in this question, SILENT mutation is the one in which there is no change in the amino acid sequence after translation of the mutated mRNA. In other words, the mutation leads to an alteration of codon but the MUTATED CODONS CODE FOR THE SAME AMINO ACID as the original codon, hence, no effect on the protein produced or individual, in general.

I NEED HELP AS QUICK AS POSSIBLE!!!

Answers

The answer is Y !!!!!!!!!
Answer:
Correct answer is option B. Y

In biological macromolecules like proteins, the hydrophobic residues tend to clump together in the interior of the folded structure. What is the best explanation for why this occurs

Answers

Answer:

The water and polar residues cannot bind to the hydrophobic ones, so in the lowest energy state the hydrophobic residues are pushed together in the middle.

PLEASE HURRY
Based on this graph
What is the approximate age of the dust sample?
A. Between 4 and 5 billion years old
B. Between 6 and 7 billion
years old
C. Between 24 and 25 years old
D. Between 32 and 33 billion years old

Answers

Answer:

B

Explanation:

Answer:

b

Explanation:

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