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GATE 2026 BT – Question 39

General Biology · Biochemistry: Biomolecules, biological membranes, channels and pumps, molecular motors, action potential and transport · 2 marks · Multiple choice

Match the biomolecules in Column I with their function given in Column II

Column IColumn II
P. Lectins1. Acts as ATP dependent pump to efflux out small molecules
Q. P-glycoprotein2. Targets lysosomal enzymes to their destination
R. Digitoxigenin3. Specific carbohydrate binding proteins
S. Mannose 6-phosphate4. Inhibits Na$^+$-K$^+$ pump
  1. P-3; Q-2; R-1; S-4
  2. P-1; Q-3; R-4; S-2
  3. P-2; Q-1; R-3; S-4
  4. P-3; Q-1; R-4; S-2

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Correct answer: (D) P-3; Q-1; R-4; S-2

Explanation

Lectins bind specific carbohydrates (3), P-glycoprotein is an ATP-driven efflux pump (1), digitoxigenin (a cardiac glycoside) inhibits the Na$^+$-K$^+$ pump (4), and mannose 6-phosphate is the tag that targets enzymes to lysosomes (2).