Question

Choose the correct answers from the alternatives given :
Which of the following engage in lactate fermentation?

• A. Lactobacillus cells
• B. Muscle cells
• C. Sulphate-reducing bacteria
• D. Both (a) and (b)

Answer 1

The correct option is D Both (a) and (b)

• Lactobacillus baterial are used for the preparation of curd from the milk. These bacterial cells perform the reaction of lactic acid fermentation where they use the lactose in the milk as substrate converting to lactic acid of curd.
• Muscle cells when they undergo go excessive physical work and there is not enough oxygen to undergo aerobic respiration so they also perform the process of lactic acid fermentation forming lactic acid in the muscles but excessive formation of lactic acid will lead the muscle to go into fatigue condition where the muscle will be no longer able to perform any physical function for atleast some time.
• Therefore the answer option 'Both (a) and (b)' is correct.