Biology – MCQ #1
MCQ from NUMS-MDCAT 2024
Question: Which function cannot be attributed to plasma membrane lipids?
- Recognition of cells having non-self surface markers
- Maintaining cell membrane flexibility
- Control of metabolic reactions across cell membrane
- Providing barrier for intracellular reactions
Show Answer & Explanation
Correct Answer: C — Control of metabolic reactions across cell membrane
Explanation: Lipids form the bilayer and maintain membrane fluidity and barrier function. Cell recognition is largely via glycoproteins/glycolipids. Metabolic reactions are enzyme-mediated in cytoplasm/organelles; they are not “controlled” by membrane lipids.
Explanation: Lipids form the bilayer and maintain membrane fluidity and barrier function. Cell recognition is largely via glycoproteins/glycolipids. Metabolic reactions are enzyme-mediated in cytoplasm/organelles; they are not “controlled” by membrane lipids.
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