Nucleus in Class 9 Science : Practice MCQ Questions & Answers with Explanations

2 practice sets · Page 1 of 1

Which of the following particles are found in the nucleus of an atom?

Only neutrons

Electrons and neutrons

Protons and neutrons

Electrons and protons

View Answer

Correct Answer: C — Protons and neutrons

Explanation:

The nucleus contains protons and neutrons.

What are chromatin fibers made of?

DNA and proteins

RNA and proteins

Lipids and carbohydrates

DNA and lipids

View Answer

Correct Answer: A — DNA and proteins

Explanation:

Chromatin consists of DNA wrapped around proteins called histones.