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Schach [20]
3 years ago
13

How does the villis aid in absorption​

Biology
1 answer:
Ad libitum [116K]3 years ago
4 0

Answer:

The villi in the small intestine provide a large surface area with an extensive network of blood capillaries. This makes the villi well adapted to absorb the products of digestion by diffusion and active transport.

Explanation:

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If you wanted to design an artificial hormone who's action on a target cell required the least amount of interaction with that c
vitfil [10]

Answer:

The water soluble hormones affect the target cells with least amount of interaction.

Explanation:

Hormones are the chemical messengers. These are the substances secreted by the endocrine glands. The hormones are secreted directly into the bloodstream and are carried to the target cells within the blood only.  

Based on their structure, hormones are water-soluble or lipid-soluble. The lipid-soluble hormones are steroid hormones and thyroid hormones. These hormones can easily pass through the lipid bilayer of the cell membrane of the target cell. Therefore, the lipid-soluble hormones have intracellular receptors that are present in either cytoplasm or the nucleus of the target cells.  

On the other hand, the water-soluble hormones can not pass through the lipid bilayer of the target cells. Therefore, these hormones have extracellular receptors on the surface of the target cells. Binding of the water-soluble hormones to their cell surface receptors triggers the production of the intracellular second messengers that finally carry the signal to the target protein or any other target molecule.

<u>Therefore, a water-soluble hormone exhibits the least amount of interaction with the target cell. Amine hormones such as epinephrine and melatonin, peptide hormones such as oxytocin are some examples of the water-soluble hormones.  </u>

8 0
3 years ago
How do enzymes speed up chemical reactions? Enzymes
Lubov Fominskaja [6]

Answer:

enzymes are biological catalysts which speeds of up chemical reactions which is occuring on an organism

Explanation:

when an enzyme is deposited to a metabolic reaction, the active site of the enzymes me will be attaching to the substrate particle. then the substrate particle will be broken down to product particles

eg : starch + amylase gives maltose

8 0
3 years ago
How can an injury to a peripheral nerve cause loss to both sensory and motor functions?
liubo4ka [24]
<span>Muscles receives signal from the nerves which causes them to contract and relax. If our nerve is damaged then we can't send or receive signals from it so you can lose sensory and motor functions.</span>
6 0
3 years ago
Read 2 more answers
Which of the following is most likely to be observed by a physiologist?
yulyashka [42]

Answer:

D) The oily secretions from eye ducts prevent the lids from sticking together.

Explanation:

All other options are related to anatomy.

If we define physiology then simple say that it is a branch of bio in which the normal functions of living organisms and their parts are studied.

8 0
4 years ago
How do tsunamis effect the atmosphere? How do the hydrosphere, biosphere and the atmosphere affect tsunamis?
baherus [9]
Tsunamis leave little water droplets in the air, the biosphere has groundwater, tumbling down, causing the hydrosphere to rise, biosphere be "fertilizing" the groundwater, and atmosphere by gases that help form the tsunami
6 0
3 years ago
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