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Mekhanik [1.2K]
3 years ago
6

The presence of cholesterol in the plasma membranes of some animal cells _____. The presence of cholesterol in the plasma membra

nes of some animal cells _____. enables the membranes to stay fluid when cell temperature drops enables the cell to remove hydrogen atoms from saturated phospholipids enables the cell to add hydrogen atoms to unsaturated phospholipids reduces mutations to genetic material inside the cell makes the cell membrane less flexible, allowing it to sustain greater intracellular pressure
Biology
1 answer:
Travka [436]3 years ago
4 0

Answer:

The presence of cholesterol in the plasma membranes of some animal cells <u>enables the membranes to stay fluid when cell temperature drops</u>.

Explanation:

Cholesterol is an essential lipid in the basic structure of cell membranes. The membranes must have a fluid structure so that the proteins integrated in them can move ''horizontally'' to interact with their ligands and with other proteins. With excess saturated fat the membranes become rigid, but only with the necessary unsaturated fat the membranes are extremely fluid, and very sensitive to changes in temperature. Cholesterol stabilizes the structure of the membranes; preventing the collapse and crystallization between lipid chains that would lead to loss of fluidity and excessive rigidity in the membrane. By decreasing the temperature; as temperatures drop, fluidity decreases, an effect that partially counteracts the presence of cholesterol.

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A group of mutations, known as MT-ND1 , have been identified in mitochondrial DNA . These mutations are associated with a number
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Explanation:

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3 years ago
What is the probability of a child being a daughter with blood group O if the parents are both heterozygotes with blood group A?
konstantin123 [22]

Answer:

0.125

Explanation:

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3 0
3 years ago
What genetic syndrome did your karyotypes have ?
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Answer:

Among some of the numerical abnormalities a karyotype can detect are: Down syndrome (trisomy 21), in which an extra chromosome 21 causes distinctive facial features and intellectual disabilities. Edward syndrome (trisomy 18), in which the extra chromosome 18 translates to a high risk of death before the first birthday.

Explanation:

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The human nervous system is made of a huge number of interconnected neurons. The two main divisions of the nervous system are th
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Answer:

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Explanation:

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3 years ago
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