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andrew-mc [135]
3 years ago
8

Which statement regarding cholesterol is false? It is the precursor for steroid hormones. It is not usually a component of eukar

yotic membranes. It is the precursor for bile acids. It has a hydrophilic functional group.
Biology
1 answer:
oksian1 [2.3K]3 years ago
3 0

Answer:

It is not usually a component of eukaryotic membranes.

Explanation:

Cholesterol is responsible for modulating the fluidity of the cell membranes of eukaryotes.

It is produced in most animal cells, and its formation is substantially active in <u>liver</u> cells, where bile acids are synthesized from cholesterol.

In addition, cholesterol is the precursor of steroid hormones such as progesterone, testosterone, estradiol and cortisol.

Cholesterol (like other lipids) is <u>amphipathic</u>, meaning it has a polar head (hydrophilic) and an apolar tail (hydrophobic).

Given the above, it can be concluded that the false statement is "it is not usually a component of eukaryotic membranes".

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Answer:

(A). Result in different amino acids to be read due to frame shifts

Explanation:

Insertion or deletion mutations (or Indel mutations) can be defined as mutations in DNA due to insertion (addition) or deletion of nucleotide bases in DNA.  

These mutations lead to change in reading frames (sequence of codons), which leads to formation of protein having completely different amino acid sequence. Hence, these mutations are also cause frameshift mutations.

This is due due to triplet nature of genetic codes as insertion or deletion of one or more bases (but not three) would change change in codon sequence and mutated sequence can form a non-functional or truncated protein.

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