Question

Which of the following pair of organelles does not contain DNA?

• A. Chloroplast and vacuoles
• B. Lysosomes and vacuoles
• C. Mitochondria and lysosomes
• D. Nuclear envelope and mitochondria

Answer 1

The correct option is B

Lysosomes and vacuoles

The correct option is B.

Explanation of correct option:

1. Lysosomes and vacuoles are the cell organelles that lack their own DNA.
2. The enzymes required for their function are directed by the nucleus of the cell.

Explanation of incorrect option:

Option A:

1. Mitochondria are considered the powerhouse of the cell.
2. They contain their own mitochondrial DNA whereas lysosomes do not.
3. Mitochondrial DNA help in the synthesis of enzymes required for pathways of energy synthesis.

Option B:

1. Chloroplast contains their DNA whereas vacuole lacks DNA.
2. Chloroplast DNA contains genes that are required for their activity and photosynthesis.

Option D:

1. The nuclear envelope is the bi-lipid membrane that surrounds the nucleus.
2. It protects the genetic material present inside the nucleus.
3. Mitochondria contain their own mitochondrial DNA.

Final answer: Lysosomes and vacuoles are the cell organelles that do not contain DNA.