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goblinko [34]
3 years ago
11

Some materials can move across the cell membrane against a concentration gradient by

Biology
1 answer:
Anastasy [175]3 years ago
7 0

Answer:

Molecules which move against the concentration gradient across the cell membrane employ the mechanism of active transportation.

Explanation:

Normally, permitted molecules moves across the cell membrane of the cell by the process of diffusion and osmosis. This is used when molecules move from hypertonic region to hypotonic region (if ions) and hypotonic to hypertonic (if water). This is a passive transportation which do not require the expense of energy from the cell.

In contrast, when molecules move in or out of the cell against their concentration gradient, that is ions moving from hypotonic region to hypertonic region, they implore the expense of energy in form of adenosine triphosphate (ATP), and the involvement of the membrane carrier proteins. This is called active transport.

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4 0
3 years ago
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The foramen magnum is located in which bone of the skull?
Sloan [31]

Answer:

occipital bone

Explanation:

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3 years ago
(Easy question)<br> What is an Adaptation?
OlgaM077 [116]

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Explanation:

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3 years ago
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The domestic dog, Canis lupus familiaris, has 39 pairs of chromosomes in each of its diploid somatic (body) cells. Therefore, th
Fed [463]

Answer:39 chromosomes

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What are alleles?<br> different genes<br> same genes<br> different types of a genes
krok68 [10]

Answer:

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Explanation:

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