What is the feature of the cell membrane that causes it to be able to "choose" what materials enter and exit?

1 answer:

6 0

Cell membranes are semi-permeable. That is why they can allow only some substances to enter the cell. It basically depends on the size of the molecules. Smaller atoms like water can easily pass through. However, macromolecules such as sugars, oils and proteins cannot easily pass because they contain a long chain of monomers.

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iren2701 [21]

Answer:

C) More momentum

Explanation:

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goldenfox [79]

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What are the monomers to proteins

lutik1710 [3]

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Explanation:

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What biomes receive less then 100 Cm of rain each year? Check all that apply

jeyben [28]

Answer:- Option 3 (desert), Option 4 (tundra) and Option 5 (grassland).

Explanation:-

The amount of rainfall varies in different biomes:-

1. Tropical rain forests - The annual rainfall in these forests falls in the range of 125 to 660 cm which varies according to the seasons.

2. Temperate rain forest - The annual rainfall in these forests can range from 200 cm to 350 cm depending on the region where they are found. The annual rainfall is higher in warmer regions .

3. Desert - As the name suggests, the desert areas do not get enough rainfall. The annual rainfall in a desert is less than 25 cm.

4. Tundra - It is a biome which is found in relatively cooler climates and the amount of rainfall is very less these regions. The annual rainfall in tundra biomes is less than 20 cm.

5. Grassland - in these biomes, the rainfall is higher than the tundra and desert but is not as high as the rain forests and thus, grass is the dominant vegetation. The annual rainfall ranges from 60-90 cm.

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2 years ago