Respiration In Plants — BIOLOGY STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYRespiration In Plants3 Marks
Question
When does anaerobic respiration occur in man and yeast?
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Answer
In alcoholic fermentation (by yeast), incomplete oxidation of glucose occurs under anaerobic conditions by sets of reactions where pyruvic acid is converted to ethanol and $\mathrm{CO}_2$.
$\mathrm{PA} \rightarrow \text { Ethanol }+\mathrm{CO}_2$
In animal cells also, like muscles during exercise, when oxygen is inadequate for cellular respiration pyruvic acid is reduced to lactic acid.
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