Question 12 - MCQs from NCERT Exemplar - Chapter 6 Class 10 - Life Processes

Last updated at August 12, 2026 by

The correct sequence of anaerobic reactions in yeast is

 

Question 12 MCQ.jpg

Answer

Anaerobic means in the absence of oxygen. Anaerobic respiration takes places completely in the cytoplasm. 

  • The breakdown of glucose into pyruvate takes place in the cytoplasm . 
  • Pyruvate breaks down into lactic acid/ethanol in the cytoplasm . 

Note: Aerobic respiration takes place in the mitochondria. While the breakdown of glucose into pyruvate also takes place in the cytoplasm, Pyruvate breaks down into CO 2 +H 2 O inside mitochondria.

Breakdown of Glucose inside cell-01.jpg

The correct answer is(d)

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