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Respiration In Plants — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYRespiration In Plants1 Mark
MCQ
Ethanol is formed from acetaldehyde by an enzyme called:
  • A
    Lactate dehydrogenase
  • B
    Pyruvate kinase
  • C
    Alcohol dehydrogenase
  • D
    Pyruvate decarboxylase
✓

Answer

  1. Alcohol dehydrogenase

Explanation:

Alcoholic fermentation occurs in the absence of O2 and is a type of anaerobic respiration in which the end products are CO2 and alcohol.Aldehyde is an intermediate product in fermentation and is further oxidised to alcohol with the help of an enzyme called dehydrogenase.So ethanol is formed from acetaldehyde with the help of alcohol dehydrogenase.


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