First step of decarboxylation in cellular respiration occurs in

  1. Cytoplasm
  2. Mitochondrial membranes
  3. Mitochondrial Matrix
  4. Peri mitochondrial space
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The first step of decarboxylation in cellular respiration is

  1. Conversion of PGAL to DHAP
  2. Conversion of PGAL to PGA
  3. Conversion of Pyruvate to Acetyl CoA
  4. Conversion of BPGA to PGA
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Which of the following ion is important for the activity of Pyruvate dehydrogenase?

  1. Zn++
  2. Mn+
  3. Mg++
  4. Ca++
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How many molecule of NADH are produced during oxidation of one molecule of Glucose to Acetyl CoA?

  1. 2NADH
  2. 4NADH
  3. 3NADH
  4. 12 NADH
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The substrate which enters in Krebs’ cycle during oxidation of Glucose is

  1. Pyruvate
  2. Acetyl CoA
  3. Oxaloacetate
  4. Succinate
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Who elucidated Krebs’ cycle for the very first time?

  1. Frederick Kreb
  2. Hans Kreb
  3. Edward Kreb
  4. Tilman Kreb
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Which of the following is not used for the cyclic process of cellular respiration of carbohydrates?

  1. Krebs’ cycle
  2. Tricarboxylic Acid Cycle
  3. Citric Acid cycle
  4. Phosphorespiration cycle
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The very first step of TCA cycle involves except

  1. Citrate synthase
  2. A molecule of coenzyme A is released
  3. Isomerization
  4. Formation of citrate
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From citrate to alpha-ketoglutarate in TCA cycle all the following reactions happen except

  1. Isomerization
  2. Decarboxylation
  3. Release of Carbon-dioxide
  4. FADH2 formation
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From alpha-ketoglutarate to succinyl CoA in TCA cycle which of the following occurs

  1. 4C compound is formed
  2. 5C compound is Formed
  3. 6C compound is formed
  4. 2C compound is regenerated
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