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Nitella [24]
3 years ago
9

The addition of acetyl groups makes histones _______ positively charged, and thus _______ their affinity for dna.

Biology
1 answer:
EastWind [94]3 years ago
8 0
I think it’s more and increases
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Oksana_A [137]

Answer:

My Guess Is C if im wrong sorry

Explanation:

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3 years ago
Viruses are considered living things because they can reproduce. True or False
belka [17]
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How can birds pass on their urine?​
likoan [24]

Birds, unlike mammals, do not have separate exits for urine and feces. Both waste products are eliminated simultaneously through the cloaca. While mammals excrete nitrogenous wastes mostly in the form of urea, birds convert it to uric acid or guanine, which reduces water loss in comparison.

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3 years ago
Read 2 more answers
Refer to the Biochemistry in Focus section of your text for this chapter to answer this question. Sarin inhibits acetylcholinest
DENIUS [597]

Answer:

c. Pyridostigmine binds to the acetylcholinesterase active site and prevents sarin from binding to and modifying the enzyme active site.

Explanation:

Sarin is a toxic compound which inhibits acetylcholinesterase enzyme. This enzyme degrades the neurotransmitter acetylcholine after the required muscle cell stimulation. In absence of its activity, acetylcholine is not degraded and the muscle cells are stimulated uncontrollably. The muscles are not able to relax which ultimately proves fatal for the victim.

Pyridostigmine is also an acetylcholinesterase inhibitor like Sarin. However its period of inhibition is short compared to organophosphorus inhibitors like sarin. It competes with sarin and replaces it in the active site of acetylcholinesterase. The enzyme is still inhibited but for a shorter time as compared to inhibition by Sarin. Hence after sometime, it becomes functional again and resumes its normal activity. Acetycholine starts getting degraded relaxing the muscles.

8 0
2 years ago
Which of the following is an example of a non-living organism:
Aloiza [94]

Answer: Viruses are non living organisms.

Explanation:

7 0
3 years ago
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