Match the terms in Column A with their respective properties in Column B.

Question

Match the terms in Column A with their respective properties in Column B.

Column-A:

i. Glucose,

ii. Yeast,

iii. Glycolysis,

iv. Pyruvic acid.

Column-B: a. Intermediate substance in breakdown of glucose, b. Glucose is converted into pyruvic acid, c. Uses nutrients for fermentation process, d. Best organic substrate for respiration.

1. A. i-d, ii-c, iii-b, iv-a (Correct answer)
2. B. i-b, ii-d, iii-a, iv-c
3. C. i-a, ii-b, iii-c, iv-d
4. D. i-b, ii-a, iii-d, iv-c

Correct Answer

Option A — i-d, ii-c, iii-b, iv-a

Detailed Solution & Explanation

The correct answer is i-d, ii-c, iii-b, iv-a.

Key Points

• Glucose – best organic substrate for respiration (d).
• Yeast – uses nutrients for the fermentation process (c).
• Glycolysis – glucose is converted into pyruvic acid (b).
• Pyruvic acid – intermediate in the breakdown of glucose (a).

Additional Information

• Glycolysis splits one glucose into two molecules of pyruvic acid in the cytoplasm, netting 2 ATP and 2 NADH, and needs no oxygen.
• Pyruvate is the branch point: with oxygen it enters the mitochondrion for the Krebs cycle; without, it becomes ethanol and CO₂ in yeast or lactic acid in muscle.
• Yeast (*Saccharomyces cerevisiae*) is the classic fermenting organism, used in baking and brewing.
• Glycolysis is also called the EMP pathway, after Embden, Meyerhof and Parnas.