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Crank
3 years ago
8

What does facilitated diffusion across a cell membrane require

Biology
1 answer:
professor190 [17]3 years ago
8 0

Answer:

Explanation: In facilitated diffusion, molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers. A concentration gradient exists for these molecules, so they have the potential to diffuse into or out of, the cell by moving down it.

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What was the benefit of crop rotation?
dybincka [34]

Answer:

<em>B. Different crops could be grown on the same land. </em>

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8 0
3 years ago
Se the information from the article to answer the question.
Svetach [21]

Answer:

A. near-Earth objects.

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Science can be defined as a branch of intellectual and practical study which systematically observe a body of fact in relation to the structure and behavior of non-living and living organisms (animals, plants and humans) in the natural world through experiments.

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7 0
3 years ago
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Which structure carries oxygenated blood to the body?
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