Human beings are highly evolved species, yet they may undergo anaerobic respiration. Explain.
GeneralClass 12AllAnswered 27 Mar 2026
Answer
During vigorous exercise, oxygen supply to skeletal muscles becomes insufficient. Under these conditions, muscle cells switch to lactic acid fermentation instead of aerobic respiration.
Reaction:
CH₃COCOOH (Pyruvate) → CH₃CHOHCOOH (Lactic acid) + Energy
Enzyme: Lactic acid dehydrogenase
This process allows muscles to continue producing ATP temporarily, though lactic acid accumulation causes muscle fatigue.
Suggested Q&A
General · Class 12- GeneralClass 12Electric Field at Centre of Ring with Non-Uniform Charge Distribution. Four quadrants carry linear charge densities: +2λ, −2λ, +λ, −λ. Find electric field at centre.
- GeneralClass 12P°(hexane) = 408 Torr, P°(heptane) = 141 Torr. x(hexane) = 0.300. Find Y₆ and Y₇.
- GeneralClass 122N₂O₅(g) → 4NO₂(g) + O₂(g). Initial P = 50 mmHg; P at 30 min = 87.5 mmHg. Find P at 60 min.
- GeneralClass 12What is the difference between psychosis and neurosis?
- GeneralClass 12What is the difference between prism and a pyramid?
- GeneralClass 12What is the difference between phrase and clause?