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SpyIntel [72]
3 years ago
14

Describe the structure of the cell membrane.

Biology
1 answer:
grandymaker [24]3 years ago
7 0

Answer:

Cell Membrane Function and Structure The cell membrane (plasma membrane) is a thin semi-permeable membrane that surrounds the cytoplasm of a cell. Its function is to protect the integrity of the interior of the cell by allowing certain substances into the cell while keeping other substances out.

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This picture represents humoral immunity, please read through it, and if you dont understand which option is your answer then i would recommend you read more about this topic, if you want it to be done fast, you can read this http://www.s-cool.co.uk/a-level/biology/immunity/revise-it/the-third-line-of-defence 
I hope you can come up with the answer on your own as it will be a good thing for you in your future exams :) 
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During a cell-mediated immune response, which of the following describes how infected cells are detected by the immune system?
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The correct answer to this question is A
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Answer:

Where is the statement???

Explanation:

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3 years ago
1. Your unique genetic identity comes from three different events; crossing over, random alignment, and random fertilization. Ex
svetlana [45]

Answer:

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Explanation:

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During metaphase I, the homologous pairs are aligned at the cell's equator in a random manner. This means that either the paternal or maternal chromosome of a pair may face one or the other pole of the cell. The arrangement of chromosomes during metaphase-I determines whether the paternal or maternal chromosome of each pair would be distributed to one or the other pole of the cell. This random segregation creates new gene combinations in gametes.

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