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Nat2105 [25]
3 years ago
8

What gives cell membranes a flexible structure that forms a strong barrier for the cell

Biology
1 answer:
Aleonysh [2.5K]3 years ago
7 0
Cell membrane fluidity is determined by many things, including the presence of or absence of saturated and or unsaturated fatty acid tails, and because of that the ability of the phospholipids in a cell membrane to tightly pack together or not. I believe though in terms of an additional substance it would have to be cholesterol. These specific lipid molecules are inserted in between the phospholipids preventing phospholipids from tightly packing together thus allowing the cell membrane to have greater fluidity and flexibility.
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Down's Syndrome is also called Trisomy 21 because affected people have three copies of chromosome 21. How is this possible?
Whitepunk [10]

Answer:

hope this helps

Explanation:

About 95 percent of the time, Down syndrome is caused by trisomy 21 — the person has three copies of chromosome 21, instead of the usual two copies, in all cells. This is caused by abnormal cell division during the development of the sperm cell or the egg cell.

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3 years ago
After suffering a head injury, doctors discover that your
VikaD [51]

Answer:

1. You will be unable to smell

3. Your olfactory receptor cells will no longer be able to respond  to molecules trapped in the mucus.

Explanation:

The Olfactory receptors are the receptors present in the olfactory neurons which detect different odorants or smell.

The olfactory receptors are embedded in the epithelium or mucous lining of the nose in which one extension of the cell body reaches the epithelium surface and branches into cilia like structures which sense the odour.

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Thus, Options-1 and 3 are correct.

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Explanation:

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