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DSSSB TGT C10respiration — practice questions

Explore 3 free C10respiration questions in DSSSB TGT Biology. Open each question or exercise to read its content, reference answers and available explanation.

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C10respiration questions and exercises with answers

Showing questions 1–3 of 3.

As per your syllabus, in AEROBIC respiration, where in the cell does the breakdown of PYRUVATE using oxygen take place?Read the answer and worked solution →As per your syllabus, what does ANAEROBIC respiration in YEAST produce from pyruvate?Read the answer and worked solution →As per your syllabus, what is the energy released when the TERMINAL PHOSPHATE bond in ATP is broken using water?Read the answer and worked solution →

Worked practice questions

As per your syllabus, in AEROBIC respiration, where in the cell does the breakdown of PYRUVATE using oxygen take place?

  1. Cytoplasm only
  2. Ribosomes
  3. Nucleus
  4. Mitochondria
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Correct answer: D. Mitochondria

As per your syllabus, aerobic respiration of pyruvate occurs in mitochondria — the cell's powerhouse. The first step (glycolysis) is in cytoplasm.

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As per your syllabus, what does ANAEROBIC respiration in YEAST produce from pyruvate?

  1. Pure CO₂
  2. Ethanol (alcohol) + CO₂ — this is fermentation
  3. Pure water
  4. Lactic acid
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Correct answer: B. Ethanol (alcohol) + CO₂ — this is fermentation

As per your syllabus, yeast fermentation: pyruvate → ethanol + CO₂. Lactic acid is the muscle-cell pathway under low oxygen.

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As per your syllabus, what is the energy released when the TERMINAL PHOSPHATE bond in ATP is broken using water?

  1. About 30.5 kJ/mol
  2. About 100 J
  3. Several MJ
  4. Zero — no energy
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Correct answer: A. About 30.5 kJ/mol

As per your syllabus, ATP box, terminal phosphate hydrolysis releases ~30.5 kJ/mol — used to drive endothermic cellular reactions.

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