what is the function of the fold and villi

Answers

Answer 1

Answer:

The inner wall of the small intestine is covered by numerous folds of mucous membrane called plicae circulares. The surface of these folds contains tiny projections called villi and microvilli, which further increase the total area for absorption.

I hope this will help you if not then sorry, have a wonderful day :)


Related Questions

is an example of the degeneracy of the genetic code.

A.An amino acid has more than one codon.

B.Each codon specifies more than one amino acid

C.The first two bases in the CCA terminus of tRNA specify an amino acid.

D.The genetic code in mRNA is a triplet of bases.

Answers

Answer: a:an amino acid has more than one codon
Explanation: in a sequence of dna one codon is a triplet of based and when you look at the codon in an amino acid each one should consist of either one codon or one set of triplet bases.

Khi nói về các hoocmôn tuyến tụy, phát biểu nào sau đây sai?

Answers

Explanation:

The exocrine component of the pancreas is the pancreatic islets. The endocrine cell of the pancreas produces hormone insulin. The major hormones released by the endocrine gland inside the pancreatic are glucose and glucagon, which control blood glucose levels, and cortisol, which inhibits insulin and glucagon production.

define zygote as it is used in biology

Answers

Answer:

fertilized egg

Explanation:

Zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm). In the embryonic development of humans and other animals, the zygote stage is brief and is followed by cleavage, when the single cell becomes subdivided into smaller cells.

Britannica

Answer:

A zygote is a eukaryotic cell that is produced when two gametes fertilize each other. The genome of a zygote is made up of the DNA from each gamete and includes all of the genetic information needed to create a new person. The zygote is the most basic developmental stage of multicellular organisms.

OAmalOHopeO

Determine which word best describes the function of
hormones.
A. Protein
B. Molecule
C. Growth
D. Communication

Answers

Its D Communication.

Have a nice day!!

Answer:

d

Explanation:

Look Up Jaire Alexander aint he fine?

Answers

Answer:

maybe jk he is

Explanation:

Helpppppp please!!! How do membrane proteins contribute to the membrane potential?

Answers

Answer:

the answer is B

Explanation:

the answer is b

A researcher is studying three wolf packs that hunt in the same area. The first pack preferentially kills mature, healthy moose; the second pack preferentially kills sick, old moose; and the third pack tends to kill an equal number of healthy and sick moose. Which pack likely plays the greatest role in determining the birth rate of the moose population

Answers

Answer:

The correct answer is - the pack that preferentially kills mature, healthy moose.

Explanation:

The birth rate is the number of individuals born in a population in a particular amount of time period. The birth rate can be determined by the individual born in a particular time period and that depends on how many healthy and viable individuals in a population can reproduce and produce new individuals.

Old and sicks are not the ones who can actively participate in reproduction and, however, if the number of healthy and mature individuals are killed there would be fewer newborns in the population.

Thus, the correct answer is the pack that preferentially kills mature, healthy moose.

Not really a school question but, do i need a fishing license to buy bait? And can a person under 16 buy fishing bait without a license?

Answers

Haha yes and no………..

Identify the correct bonding between nitrogen bases in DNA molecule from given pair.

a. A=C
b. A=G
c. A=U
d. A=T​

Answers

Answer:

It's not A or B. I hope that helps you a bit.

Explanation:

Answer:

A=T is the correct bonding between nitrogen bases in DNA molecule

when a solvent equally disperses throughout a solution what type of transport is this

Answers

Answer:

Diffusion

Explanation:

Diffusion is the homeostasis of solvents

Which group evolved first?
rays
skates
sharks
chimaeras

Answers

Answer:

C - Sharks; (took the test)

Explanation:

Sharks evolved nearly 420 million years ago. Chimeras, skates, and rays are all related to sharks through their ancestry.

Answer:

I hope this helps.

Explanation:

PLLZZZ HELP!!

 Diagram the alternation of generations life cycle of a plant. Put the following terms in order and type arrows (>) between the terms to show which direction the life cycle is going: sporophyte, gametes, gametophyte, spores, meiosis, sporangium. Label which parts are haploid and which parts are diploid. You may also list the terms in numerical order.

Answers

Answer:

i know that gametes and meiosis are both haploid, but i havent heard of the others yet, i cant help you there :/

Which of these cell organelles are NOT found in plant cells?
Centrioles
Cell wall
Chloroplasts
Vacuoles

Answers

Answer:

centrioles

Explanation:

I hope it's helpful for you ☺️

Answer:

Centrioles

Explanation:

They aren't found in plant cells.

draw a flow chart showing the spread of disease.​

Answers

Answer:

hello

Explanation:

can you please tell me which disease

Which of these statements expresses a scientific theory?
A. All the tissues that make up animals consist of cells.
B. The larger of two cells probably contains a nucleus.
C. Cells are the basic units of life.
ОО
D. A material that consists of cells came from a living organism.

Answers

Answer:

C

Explanation:

The cells make up a living organism, that is, it is the basic functional unit of the living organism.

mention 10 forest trees and their botanical names with their uses​

Answers

Answer:

Explanation:

California Box Elder- Acer negundo californicum

Japanese Maple- Acer palmatum

Silk Tree- Albizia julibrissin

Strawberry tree-  Arbutus unedo

Bird of paradise shrub- Caesalpinia gilliesii

Harlequin Glorybower-  Clerodendrum trichotomum

Cypress- Cupressus spec.

Oregon Ash-  Fraxinus latifolia

Sweet Bay- Laurus nobilis 'Saratoga'

Explanation:

I hope its help you

Thank you

After Frida stops exercising, she continues to breathe heavily. What is most likely occurring in her body?
a. Heavy breathing during exercise has produced an oxygen surplus in her muscles. This oxygen is being transported to her lungs. This is a result of aerobic respiration.
b. Heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. Lactate is being transported to her liver. This is a result of aerobic respiration.
c. Strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration.
d. Strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration.

Answers

Answer:

D. Strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration.

Explanation:

Please Mark me brainliest

Which molecules in your body do
not contain carbon atoms?
Genes, which are made of DNA
Proteins
Sugars
Water

Answers

I'm pretty sure its water

Why do we shiver when it is cold?
A. It is the brain stimulating the person to move to a warmer location.
B. It is an involuntary reaction that does not actually help our body.
C. The rapid twitching of the muscles generates heat.
D. It is a side-effect of the pancreas signaling to the brain that it is losing heat.

Answers

Answer:

C. The rapid twitching of the muscles generates heat.

Explanation:

When the body detects that it is cold, it will shiver in an attempt to create heat.

The rapid loosening and tightening of the muscles in this process creates heat.

This is a involuntary and natural response that helps return the body back to homeostasis and maintain a normal temperature.

So, the correct answer is C. The rapid twitching of the muscles generates heat.

Answer:

C.  The rapid twitching of the muscles generates heat.

Explanation:

When someone feels cold, tiny sensors in your skin send messages to your brain telling you that you need to warm up.

which type of motion dose not change the amino produced

Answers

Answer:

silent mutation. have a great day! :)

i was gonna answer but they answer already

How do bryophytes differ from tracheophytes?

Answers

Answer:

The main difference between bryophytes and tracheophytes is that bryophytes are nonvascular plants, whereas tracheophytes are vascular. Mosses, liverworts, and hornworts are examples of bryophytes, whereas ferns, gymnosperms, and angiosperms are examples of tracheophytes

OAmalOHopeO

Fur color is a trait controlled by a dominant over recessive gene. The fur color is either brown or black.

Two brown mice and produce 12 offspring. Three (25%) of the offspring produced are black fur and nine (75%) have brown fur.

Based on the above data, answer the follow questions.

State which fur color is dominant (1 pt each).
State which fur color is recessive (1 pt each).
What is the genotype for the black fur (1 pt )
What is the genotypes for the brown fur (2 pts )

Answers

Answer:

Dominant: Brown colored fur

Recessive: Black colored fur

Black Fur Genotype: bb

Brown Fur Genotype: BB, Bb, or bB

Explanation:

B = Brown

b = Black

Give a reason why lack of roughage in diet often lead to constipation?​

Answers

Answer:

Roughages increase fecal volume and promote peristalsis

Explanation:

Constipation refers to the condition in which bowel evacuations occur infrequently, leading to health problems. Some of the most common causes of constipation include 1-insufficient intake of dietary fibers or roughages, 2-poor hydration, 3-lack of physical exercise, 4-abuse of laxatives, etc. Dietary fibers are divided into two classes based on their water solubility: soluble and insoluble. These fibers represent the part of plant foods that the body can't digest, which absorbs and retains water (soluble fibers) as foods pass through the bowel and create bulk (insoluble fibers), thereby leading to regular bowel habits.

Which statement best describes an increase in biotic potential?
O Deer increase their rate of reproduction on an island.
Rabbit population increases in a grassland biome.
O Lions have larger broods and decrease hunting.
Seals have more offspring when food is scarce.

Answers

Answer:

i picked deer and rabbit and got it wrong ??? i need help

Explanation:

7. Why are people from Pacific Island
nations likely to become environmental
refugees?
A. Because of sea level rise due to
climate change
B. Because the fish populations they
survive on are diminishing
C. Because they ve degraded their
Islands and can no longer grow food
D. Because large factories there have
contaminated the soil, increasing cancers
and other health problems

Answers

Answer:

For these migrants, economic and cultural reasons were given as motivations for settling abroad. About 37 percent leave to find work, 26 percent for education opportunities and some 18 percent give climate change as their reasons for migration.

What does Paramecium aurelia do?

Answers

Answer:

Paramecia feed on microorganisms like bacteria, algae, and yeasts. To gather food, the Paramecium makes movements with cilia to sweep prey organisms, along with some water, through the oral groove (vestibulum, or vestibule), and into the cell.

What are australopiths, how many groups are there, and what do they date to? Which one is derived and therefore not part of our direct evolutionary line?

Answers

Answer and Explanation:

Australopithecines were a group of ancestral animals that were very similar to chimpanzees, but had common characteristics with humans, which is something normal, when we think that these animals are one of the ancestors of human beings. These animals walked on two legs, like humans, but they had very small brains and teeth that were bigger and heavier than those of humans. There were eight groups of australopithecines and they date from 8 million to 1.5 million years ago.

Among these groups, it is believed that Australopithecus afarensis is a group that has no direct ancestry with humans, being a group that did not thrive during the evolutionary process.

Using complete sentences, explain how proximity to major rivers influenced the location of early cities.

Answers

Answer:

Locations along rivers meant faster travel upstream and downstream to rule territories. The city became the place where the ruler or rulers lived together in a stationary spot. The city's location along early rivers encouraged stronger government, which in turn encouraged stronger cities.

Rivers are one of the most crucial resources that played a major role in the development in ancient times. It led to river valley civilization that influenced the location and kingdoms.

What is river valley civilization?

The river valley civilization was one of the most important events that led to the establishment of many kingdoms and regions. The proximity to the river banks influenced many factors.

The cities located on the riverbanks have greater development in services including import, export, travel, agriculture, accessibility, etc. This allowed the people to practice agriculture on a large scale due to the availability of the irrigation system.

The river banks allowed the cities to grow as major trade centers and allowed downstream and upstream travel easier. This also led to the emergence of strong government systems.

Therefore, the proximity to major rivers led to river valley civilization.

Learn more about river valley civilization here:

https://brainly.com/question/12821276

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Tami is doing experiments on three different unknown solids. She understands that treating them in different manners might result in changes to their bonding, and these changes may help her identify unknowns. She treats samples of each solid four different ways: heating them, letting them cool, shining bright light on them, and hitting them once with a hammer. The chart shows what happened to each sample.



Based on how they each acted in the trials, which substance(s) would most likely be metallic?

A and B
B
C
A and C

Answers

the answer is (C)……….
the answer would be c

Match the following STDs with their descriptions. 1. can cause sores, rashes, dementia, or blindness gonorrhea 2. can cause burning urination and infertility chlamydia 3. similar to gonorrhea but more likely to be carried unknowingly syphilis 4. parasitic STD causing genital irritation and mild discharge 5 crabs 5. pubic lice that cause itching trichomoniasis 6. untreatable STD causing periodic outbreaks of blisters 1 HPV 7. can cause genital warts or cervical cancer 6 genital herpes

Answers

Answer:

1. Syphilis

2. Gonorrhea

3. Chlamydia

4. Trichomoniasis

5. Crabs

6. Genital herpes

7. HPV

Explanation:

STD is an acronym for sexually transmitted disease and it can be defined as diseases that are easily transmissible or contractable from another person through sexual intercourse. Thus, STD spread from an infected person to an uninfected person while engaging in unprotected sexual intercourse. Some examples of STDs are gonorrhea, chlamydia, syphilis, HIV, HPV, etc.

Generally, contracting STDs has a detrimental effect to a patient because it causes an opening (break) or sore in the body of the carrier (patient) and as such making them vulnerable to diseases that are spread through bodily fluids e.g human immunodeficiency virus (HIV), Hepatitis, staphylococcus, AIDS, etc.

1. Syphilis: can cause sores, rashes, dementia, or blindness.

2. Gonorrhea: can cause burning urination and infertility

3. Chlamydia: similar to gonorrhea but more likely to be carried unknowingly

4. Trichomoniasis: parasitic STD causing genital irritation and mild discharge.

5. Crabs: pubic lice that cause itching.

6. Genital herpes: untreatable STD causing periodic outbreaks of blisters

7. HPV: can cause genital warts or cervical cancer. HPV is an abbreviation for human papillomavirus and it's a virus that causes most common sexually transmitted infection, giving rise to skin or mucous membrane growths (warts).

Answer:

1) syphilis

2) gonorrhea

3) chlamydia

4) trichomoniasis

5) crabs

6) genital herpes

7) HPV

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