Question

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Some organisms cannot live in presence of oxygen. Ex. Many bacteria. Such living organisms have to perform anaerobic respiration for energy production. Glycolysis and fermentation are two steps of anaerobic respiration. Glucose is incompletely oxidized and less amount of energy is obtained in this type of respiration. Pyruvic acid produced through glycolysis is converted into other organic acids or alcohol with the help of some enzymes in this process. This is called as fermentation. Some higher plants, animals and aerobic microorganisms also perform anaerobic respiration instead of aerobic respiration if there is depletion in oxygen level in the surrounding. Ex. Seeds perform anaerobic respiration if the soil is submerged under water during germination. Similarly, our muscle cells also perform anaerobic respiration while performing the exercise. Due to this, less amount of energy is produced in our body and lactic acid accumulates due to which we feel tired. Questions:
a) Considering that only glycolysis is generating energy currency, how many ATP would be formed during anaerobic respiration?
b) How does anaerobic respiration occur in yeast?
c) Give any two examples of products formed by fermentation.
d) Why do we feel tired after exercise? e) Seeds sown in soil in marshy lands having high water content would perform which type of cellular respiration during germination?​

Answer 1

Answer:

c. Glysosis and fermentation

Explanation:

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Answer 2

Answer:

anaerobic respiration occurs via two steps, namely glycolysis and fermentation.