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Sergeeva-Olga [200]
3 years ago
7

Which best describes why the cell membrane is selectively permeable?

Biology
1 answer:
alukav5142 [94]3 years ago
6 0

Answer:

The answer is It allows only certain materials to enter and exit the cell.

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C. Desert

A. The tilt of the Earth's axis as it circles the Sun.

7 0
3 years ago
What are the role of all four types of lipids: fats, phospholipids, waxes, and steroids.
ycow [4]
Steroids
are complex structure four connected rings of carbon atoms. They are cholesterol which is in all body cells and used to synthesize other steroids:sex hormones, such as estrogen, and testosterone and several hormones from the adrenal glands.

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Phospholipids
consist of Glycerol portion and fatty acid chains. Only two fatty acids chains; in place of the third is portion that include a phosphate group. THe phosphate portion is soluble in water [hydrophobic] forms the ''head'' of the molecule, while the fatty acids portion is insoluble in water [hydrophobic] and forms a ''tail''.

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6 0
3 years ago
What does a plant need to survive and grow?
Nuetrik [128]

Answer:

Plenty of sunlight and water.

Explanation:

6 0
3 years ago
Which level of the energy pyramid has the least amount of food
LenaWriter [7]

Answer:

trophic

Explanation:

It follows that the carnivores (secondary consumers) that feed on herbivores and detritivores and those that eat other carnivores (tertiary consumers) have the lowest amount of energy available to them.

8 0
3 years ago
Read 2 more answers
What is one way that matter moves from<br> the geosphere to the hydrosphere?
Alisiya [41]

Answer:

Water in the geosphere can be discharged into surface water, becoming part of the hydrosphere once again, or it could be drawn up into the roots of a plant and become part of the biosphere. Water in the biosphere can be released into the atmosphere through transpiration in plants, or respiration in animals.

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