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Mice21 [21]
3 years ago
10

Explain the role of the cell membrane during passive transport and active transport

Biology
1 answer:
irinina [24]3 years ago
5 0

<em>Membrane proteins that aid in the passive transport of substances do so without the use of ATP. During active transport, ATP is required to move a substance across a membrane, often with the help of protein carriers, and usually against its concentration gradient.</em>

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Select all that apply Smaller groupings within a species are called _____.
galina1969 [7]

I'm afraid none of those is correct. The correct option would be subspecies. Subspecies are different variations, one could say, of a same organism.



Hope it helped,


Happy homework/ study/ exam!

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Which rays from the sun is affecting the people who live in the higher altitude areas above the sea level?
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Answer:

The answer is Cosmic Rays.

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What best explains snowshoe hare–lynx population cycles?
jasenka [17]

Answer:

b. the interaction of food availability and predation intensity

Explanation:

The complete question is as follows:

What best explains snowshoe hare and lynx population cycles?

a. the seasonal trends in food availability

b. the interaction of food availability and predation intensity

c. natural variation in the number of lynxes born

d. the population density of snowshoe hares

  • The population of snowshoe hare and lynx are closely linked to each other and this is because the primary food of lynx is the snowshoe hare.
  • When the number of hares is more lynx eat more of hares and less of other food and when the number of hares is scarce, lynx eat alternate food.
  • However, in the scarcity of hares, the other foods do not provide lynx with their nutritional needs and therefore, many of them leave their home grounds.
  • Therefore, when the hare number declines lynx number also declines.
  • The population cycle spans over 8-11 years.
  • The number of hares decreases at the end of the cycle and so does the number of lynx.
  • However, at the beginning when the number of the hare is more, they starve due to competition and are easily caught by the lynx and thus, the lynx population also increases.
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3 years ago
Cells use the energy available in food to make a final energy rich compound called
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