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katovenus [111]
3 years ago
12

PLEASE HELP ASAP WILL GIVE BRAINLIEST

Biology
1 answer:
sergejj [24]3 years ago
5 0

Answer:

1.29

Explanation:

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One form of chromatin modification is acetylation, which is known to occur on positively charged histone tail amino acids, thus
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Answer:

A. The tails do not interact with the DNA

Explanation:

The acetylation refers to the transfer of the acetyl group from Acetyl-CoA to the N-terminal of the histone protein.

Lysine residues (positively charged amino acid) are present at the end of the N-terminal of the histone protein which is neutralized by the acetyl group.

This loses the compaction between the positively charged histone and the negatively charged DNA and the DNA becomes more relaxed. This relaxed state allows the transcription factors to easily bind the DNA and therefore the DNA becomes transcriptionally active.

Thus, Option-A is correct

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Atmosphere is air. 
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This is the major organ of the circulatory system that causes blood to flow through the body by its pumping action.
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The major organ of the circulatory system that causes blood to flow through the body by its pumping action is the heart.

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In addition to E. coli, a risk factor for development of pyelonephritis is: a. urinary retention and reflux. b. nephrotic syndro
monitta

Answer:

One of the factors for the development of pyelonephritis, in addition to E. coli, is urinary retention and reflux (option a).

Explanation:

Pyelonephritis is an infection of the upper urinary tract caused by bacteria in the urine, such as Escherichia coli.

Under normal conditions, urine in the urinary bladder is aseptic, that is, without bacteria.  The presence of bacteria in the urine indicates a urinary infection.

Urinary retention is the limitation of the expulsion of urine from the bladder. This promotes:

  • <em>An increase in the amount of bacteria present in the bladder. </em>
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The result of urinary retention and reflux - when bacteria are present - is an infection in the upper urinary tract, called pyelonephritis.

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Urinary tract infection brainly.com/question/4756206

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