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Studentka2010 [4]
3 years ago
11

Help meeeeeeeeeeeeeeeeeeeeeeee please???

Biology
1 answer:
SCORPION-xisa [38]3 years ago
5 0
It's a it's really easy
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One form of chromatin modification is acetylation, which is known to occur on positively charged histone tail amino acids, thus
Naya [18.7K]

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

4 0
3 years ago
A piece of iron at 25 digress Celsius is dropped into a glass of water at 15°C which statement would be correct
ELEN [110]
Its b I had this question earlier
8 0
3 years ago
Biology MCQs please help
joja [24]
<h2>MCQ:- </h2>

<h3>ANSWER:-</h3>

  1. Tissue
  2. Unicellular Prokaryote
  3. Must be correct
  4. Not include in any kingdom

<h2>Explanation:- </h2>

(1) Group of cell that work together as one to perform a single function is termed as Tissue . Then the group of tissue combine to form organs and further they combine to organ systems and further they combine to form organ system .

(2) They are unicellular green algae which belongs to family Volvocaceae of the Plantae Kingdom

(3) Hypothesis is the assumption which are taken on the behalf of the observation on small <u>scale</u> . They can be correct or incorrect depends on the number of observation and Hypothesis.

(4) Viruses are included in any of the kingdom because they are on the intermediate line of living and non living as they show properties of non living outside the host and properties of living inside the host

8 0
3 years ago
In what type of cell does the cell wall take place of the membrane?
Ainat [17]

Answer:

A: Plant Cells

Explanation:

the cell membrane is found in all living species, including plants.

6 0
2 years ago
Which system controls the menstrual cycle in human females. Please help ASAP. :)
Westkost [7]

Answer:

The answer is option A.

Endocrine system

Hope this helps.

3 0
3 years ago
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