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Anvisha [2.4K]
3 years ago
7

How many times do cells divide during meiosis?

Biology
1 answer:
zmey [24]3 years ago
4 0
Cell divide two time ! first is reductional and second one is equational like mitosis !

it is as meiosis 1 and meiosis 2 !!!
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Answer:

E. are found in nitrogen-fixing cyanobacteria AND are used to protect nitrogenase.

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Heterocysts have an additional cell wall made of glycolipid that provides a hydrophobic barrier to oxygen. They are involved in production of nitrogenase and other proteins that are required for nitrogen fixation. They also degrade photosystem II which is responsible for producing oxygen and produce proteins which remove any remaining oxygen.

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