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lisov135 [29]
2 years ago
9

Hi///////////////////////////////////////////////////////////////

Biology
2 answers:
diamong [38]2 years ago
5 0

Answer:

Explanation:

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pentagon [3]2 years ago
4 0
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8-4 Discounting the Transverse Carrier Model. At one time, membrane biologists thought that transport proteins might act by bind
Natasha_Volkova [10]

Answer:

The two main reasons are nonpolar core of the bilayer and the active transport.

Explanation:

The membrane is structured to have two outer layers that are polar and an inner layer that is nonpolar.

If a membrane protein is exposed to the solvent, i<em>t will also have a polar side. It would be very difficult for the polar face of the membrane to move through the nonpolar core of the bilayer.</em> Therefore, this model is not feasible.

One major form of transport, active transport, moves solutes up the concentration gradient. <em>The binding of a solute and then release on another side of the membrane would only work for facilitated diffusion because it would cause a net movement of solutes down the concentration gradient.</em> It is unclear how energy could be expended to drive this process in the transverse carrier model.<em> Therefore, the transverse carrier model does not explain active transport.</em>

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2 years ago
Hi everyone
professor190 [17]

Amino acids are acids on one hand, and a base on the other hand.

<h3>What is an acid?</h3>

An acid is a substance that produces hydrogen or hydroxonium ions as the only positively charged ion when it ionizes.

All amino acids have an amine group -NH_2 and a carboxylic group -COOH.

The carboxylic group ionizes such that:

COOH -- > COO^- + H^+

The presence of the amine group enables amino acids to also act as a base.

More on amino acids can be found here: brainly.com/question/14583479

#SPJ1

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1 year ago
Which of the following pathogens is classified as non-living?
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The answer is (A) virus. In the medical field, it's considered non-living.
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Many of the biochemical reactions that occur within your cells are catalyzed by enzymes. Which of the following statements is tr
notka56 [123]
B: They occur more quickly than reactions without enzymes
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Two structures play an important role in the way that birds digest food.
adelina 88 [10]

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Gizzard and crop

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I just answered that question.

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