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BIO NMDCAT CELL STRUCTURE & FUNCTION
nmdcat.online July 3, 2026

81. The direct cellular source of the energy currency molecule ATP required to run active transport pumps across the plasma membrane of an animal cell is

A. Photophosphorylation in chloroplasts
B. Oxidative phosphorylation in mitochondria
✓
C. Hydrolysis of structural cellulose
D. Fusion of lysosomal vesicles

📝 Explanation

Mitochondria harvest chemical energy from food molecules via cellular respiration, producing ATP to power energy-dependent cell processes.

📖 Additional Information

  • Photophosphorylation in chloroplasts
  • Oxidative phosphorylation in mitochondria
  • Hydrolysis of structural cellulose
  • Fusion of lysosomal vesicles

Mitochondria harvest chemical energy from food molecules via cellular respiration, producing ATP to power energy-dependent cell processes.

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