Question

Match List I with List II

List I	Animal Plasma Membrane	List II: Type of Sterol
A	Human myelin sheath	(iii) Cholesterol
B	Maize leaf	(iv) Stigmasterol
C	Yeast	(ii) Ergosterol
D	Paramecium	(i) Sitosterol

Choose the correct answer from the options given below:

• (A) - (I), (B) - (III), (C) - (II), (D) - (IV)
• (A) - (II), (B) - (IV), (C) - (I), (D) - (III)
• (A) - (III), (B) - (IV), (C) - (II), (D) - (I)
• (A) - (IV), (B) - (II), (C) - (I), (D) - (III)

Hint:

Key associations for sterols:
• Human myelin sheath = Cholesterol.
• Maize leaf = Ergosterol.
• Yeast = Stigmasterol.
• Paramecium = Sitosterol.
These associations are essential for membrane biology topics.

Answer 1

The Correct Option is C

- Human myelin sheath (A - III): Cholesterol is the primary sterol in the human myelin sheath and other animal plasma membranes.
- Maize leaf (B - IV): Ergosterol is present in plants, exemplified by the maize leaf.
- Yeast (C - II): Stigmasterol is associated with fungal cell membranes, such as those in yeast.
- Paramecium (D - I): Sitosterol is a common sterol in protozoans, including Paramecium.