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Topic: Cytoskeleton, cilia, flagella, centrioles; nucleus· Cell Structure and Function

Read the following statements and choose the set of correct statements :(a) Euchromatin is loosely packed chromatin(b) Heterochromatin is transcriptionally active(c) Histone octomer is wrapped by negatively charged DNA in nucleosome(d) Histones are r…

Read the following statements and choose the set of correct statements :

(a) Euchromatin is loosely packed chromatin

(b) Heterochromatin is transcriptionally active

(c) Histone octomer is wrapped by negatively charged DNA in nucleosome

(d) Histones are rich in lysine and arginine

(e) A typical nucleosome contains 400 bp of DNA helix

Choose the correct answer from the options given below :

1. (a), (c), (e) Only

2. (b), (d), (e) Only

3. (a), (c), (d) Only

4. (b), (e) Only

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Answer: 3. (a), (c), (d) Only

  • (a) Euchromatin is loosely packed and transcriptionally active: true.
  • (b) Heterochromatin is densely packed and inactive: false.
  • (c) The histone octamer is wrapped by negatively charged DNA: true.
  • (d) Histones are rich in basic amino acids lysine and arginine: true.
  • (e) A nucleosome has about 200 bp of DNA, not 400: false.

So (a), (c), (d).

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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