Question

Match the following regarding products of oxidation during aerobic respiration.

• A. A-I, B-III, C-I, D-IV
• B. A-II, B-III, C-IV, D-I
• C. A-I, B-IV, C-II, D-III
• D. A-IV, B-I, C-II, D-III

Hint:

Remember carbon sequence: \(6C \rightarrow 3C \rightarrow 2C \rightarrow Krebs\ Cycle\).

Answer 1

The Correct Option is D

Step 1: First oxidation of aerobic respiration.
Glucose (6C) produces pyruvate (3C). Therefore: \[ A \rightarrow IV \]

Step 2: First oxidation inside mitochondria.
Pyruvate produces Acetyl Co-A. \[ 2C \] Thus: \[ B \rightarrow I \]

Step 3: First oxidation in Krebs cycle.
Citrate oxidation ultimately yields: \[ \alpha\text{-ketoglutarate} (5C) \] Matching gives: \[ C \rightarrow II \]

Step 4: Last oxidation product.
Oxaloacetic acid contains: \[ 4C \] Thus: \[ D \rightarrow III \] \[ \boxed{\text{A-IV,\; B-I,\; C-II,\; D-III}} \]