Question

Name the cell structures which are bounded by a membrane.

I- Lysosomes

II- Endoplasmic reticulum

III- Centrosome

IV- Mitochondria

• A. II only
• B. IV only
• C. I and II
• D. I, II and IV
• E. II, III and IV

Answer 1

Answer: (D)

I, II and IV

The mitochondrion is double membrane bound organelle, wherein the inner membrane is present as infolding and forms cristae.
Lysosomes, present in the cytoplasm, are the single membrane bound suicidal bags of cell.
Endoplasmic reticulum, consists of an interconnected network of membranous tubules.
Centrosome is the region, near nucleus that serves as microtubule organizing center and hence is not a membrane bound structure.

Therefore, the correct answer is option D.