The GATE Grind

GATE 2025 ES – Question 38

Environmental Microbiology · Microbial Metabolism · 2 marks · Multiple choice

For microbial metabolism:(i) carbon use for cell synthesis is anabolism;(ii) during catabolism ATP is converted to ADP. Choose the correct option.

  1. Both correct
  2. Both incorrect
  3. (i) correct;(ii) incorrect
  4. (i) incorrect;(ii) correct

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Show answer and explanation

Correct answer: (C) (i) correct;(ii) incorrect

Explanation

Anabolism builds cellular material from assimilated carbon and consumes energy, so (i) is correct. Catabolism breaks substrates down and conserves released energy primarily by forming ATP from ADP. ATP hydrolysis supplies energy for energy-demanding processes rather than defining net catabolic energy capture. Therefore the intended classification is **C**.

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