Home › Maharashtra SSC (Class 10) › Biology › Life Processes in Living Organisms Part 1 › Which substance accumulates in muscle cells when…
Which substance accumulates in muscle cells when they perform anaerobic respiration during exercise, making us feel tired?
ACitric acid
BLactic acid
CAcetyl-CoA
DPyruvic acid
Answer & Solution
Correct answer: B. Lactic acid
1. During heavy exercise muscle cells perform anaerobic respiration.
2. Less energy is produced and lactic acid accumulates.
3. Pyruvic acid is the input that gets converted, not the accumulated product, so it is ruled out.
4. This build-up of lactic acid is why we feel tired.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 2 "Life Processes in Living Organisms Part 1", p.24_
Related questions
Which of these is NOT a function for which mitosis is essential?Why are all four daughter cells produced by meiosis genetically different from the parent When carbohydrates are insufficient due to fasting, how does the body finally extract enerIn which phase of mitosis do the nuclear membrane and nucleolus start to disappear while cWhy do seeds switch to anaerobic respiration when the soil is submerged under water duringIn the electron transfer chain reaction, what is the total ATP yield from two NADH2 and twWhich set of components makes up an ATP molecule?During the conversion of pyruvic acid to acetyl-CoA, which gas is released?