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sergij07 [2.7K]
3 years ago
7

Explain why bacteria are important in the nitrogen cycle

Biology
1 answer:
Softa [21]3 years ago
3 0
Atmospheric nitrogen can not be used by plants or animals. Nitrification is the process in which nitrogen is changed to ammonia and then to nitrates and then denitrification takes place where needed.<span />
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The plasma membrane is a lipid bilayer, with glycoproteins and membrane proteins, which constitutes a semi-permeable barrier to the passage of substances into and out of the cell.

The speed with which a substance can pass through the membrane depends on its chemical properties -hydrophilic substances pass through with greater difficulty than lipophilic ones- requiring in some cases specialized transport mechanisms. The different rates with which a substance passes depends on this.

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  • <em>The </em><em>glucose</em><em> molecule, being larger, requires the use of transport proteins, being its passage through the membrane slower with respect to oxygen or sodium.</em>

Undoubtedly, molecular weight and affinity for the plasma membrane are determining factors for the passage of molecules through the lipid bilayer.

Learn more:

Simple diffusion and active transport  brainly.com/question/6420224

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