Why is the 3-dimensional shape of a macromolecule (ex: protein) important to know from the perspective of understanding

Biology

1 answer:

sineoko [7]3 years ago

5 0

Answer:

A, B and C may be true

Explanation:

The three-dimensional structure (3D) of a protein, also known as tertiary structure, is critical to its function. In general, the 3D protein structure consists of alpha-helix and beta-sheets (secondary structures) associated through disordered coiled-coil regions. Genetic mutations may cause modifications in the 3D protein structure by modifying amino acids that are added to the growing polypeptide chain during the process of translation. In consequence, the relationships among amino acids (i.e., the intermolecular attractive forces that hold them together) may also be altered by these mutations. In general, mutations that generate amino acid changes at the active site of the enzyme will have a deleterious effect, thereby decreasing or inactivating protein function. However, there are situations where a mutation may be beneficial and can eventually increase the rate of reaction of a protein.

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How does gulliver treat the lilliputians during the first weeks on the island?

Tpy6a [65]

Gulliver was a surgeon and he was on the ship named “Antelope”. When a violent storm came and the ship sank, all the crew members were engulfed in the ocean. Gulliver somehow managed and swam to the shore.

He was so tired that soon he fell into a deep sleep and when he woke he saw that he was caught and chained by little men called Lilliputians who lived there.

At first, when he tried to free himself, they were frightened of him and fire dozens of arrows in to his chest, hands, and arms but later they treated him very well. Gulliver admitted that first he want that take people in his hand and crush them but when they treated him well, he also treated them well. He was impressed by their nice hospitality they showed.

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liubo4ka [24]

Answer:

Yes

Explanation:

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Which is the term for a hormone that acts on the same cell that secreted it? A : limited hormone B : paracrine C : autocrine D :

suter [353]

Answer:

C: autocrine

Explanation:

There are three types of hormones according to where their target cells are.

Endocrine: Their target cells are distributed far and they travel via blood to reach the target cells.
Paracrine: Their target cells are often their neighbors so they often diffuse to reach them
Autocrine: Their secretion acts on themselves. Hence they are their own targets.

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3 years ago

The large pacinian corpuscles in the skin are an example of free/naked nerve endings.

Crank

They are mechanoreceptors that detect pressure, and are found in the skin and also in joints and tendons. Naked nerve endings lie in the centre of the corpuscle surrounded by concentric layers of connective tissue separated by viscous gel.

Looks like an onion.

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