Question

The DNA in the chromatin is very tightly associated with proteins called histones which package and order the DNA into structural units called:

• A. Euchromatin
• B. Nucleosomes
• C. Ribosomes
• D. Supercoiled DNAs

Hint:

Nucleosomes: DNA + histone octamer.
Basic unit of chromatin.
Consists of 146 bp DNA wrapped around histones.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Chromatin is composed of DNA and proteins.
Histones package DNA into specific structures.

Step 2: Key Formula or Approach:
No specific formula.
Need to understand chromatin structure.

Step 3: Detailed Explanation:
DNA is packaged into structural units called nucleosomes.
Nucleosomes consist of DNA wrapped around histone octamers.
Euchromatin is a form of chromatin.
Ribosomes are for protein synthesis.
Supercoiled DNA is a higher-order structure.
Thus, the structural units are nucleosomes.

Step 4: Final Answer:
Histones package DNA into nucleosomes.
Hence, the correct option is (B).