Biology Bioenergetics UHS 2022
PMDC Verified Question 63 of 67
Which of the following is not a consequence of anaerobic respiration in human muscles cells?
A
Cramps
B
High consumption of energy
C
Pain
D
Tiredness
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: High consumption of energy
Concept:

Anaerobic respiration (lactic acid fermentation) in human muscle cells is a temporary emergency measure that yields very little energy compared to aerobic respiration.

Solution:

  • Anaerobic respiration provides a very low energy yield (only 2 net ATP per glucose molecule), meaning it is highly inefficient.
  • Therefore, "High consumption of energy" (implying a high energy output or high-efficiency state) is NOT a consequence of anaerobic pathways; rather, it is characterized by an energy deficit.
  • The accumulation of lactic acid leads to tiredness, pain, and cramps.


Why other options are incorrect:

  • Cramps, pain, and tiredness are all direct physiological consequences of the lactic acid buildup during anaerobic exertion.

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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