Biology Digestion/Nutrition UHS 2023
PMDC Verified Question 15 of 48
Which enzyme is different from others?
A
Pepsin
B
Trypsin
C
Chymotrypsin
D
Lactase
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Lactase
Concept:

Enzymes are classified broadly based on the macromolecule class they hydrolyze (e.g., proteases, carbohydrases, lipases).

Formula:

N/A

Solution:

  • Pepsin, Trypsin, and Chymotrypsin all belong to the same functional class: they are proteases (protein-digesting enzymes).
  • Lactase, on the other hand, is a carbohydrase (specifically a disaccharidase) that breaks down the sugar lactose into glucose and galactose.
  • Thus, lactase is fundamentally different in its substrate target.


Why other options are incorrect:

Options A, B, and C all share the same biochemical target (peptide bonds), leaving D as the odd one out.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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