64. Match List I with List II
LIST I  (Precursor)                                                                   LIST II (Fermentation product)
A. Phenylacetic-acid related compounds                          I. Penicillin G
B. Phenoxy acetic acid                                                             II. Penicillin V
C. Cyanides                                                                                 III. Vitamin B 12
D. L-Threonine                                                                         IV. Cyclosporin C
Choose the correct answer from the options given below:
1. A- II, B-I, C-IV, D-III
2. A-I, B-II, C-III, D- IV
3. A- IV. B-II, C-III, D-I
4. A- II, B-III, C-IV, D-I

 

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Answer: 1. A- II, B-I, C-IV, D-III

Explanation:

Fermentation products are bioactive compounds that are often produced through microbial fermentation processes. These compounds are derived from specific precursors, which are the starting materials used by microorganisms in fermentation pathways. Here’s the correct matching of the precursors with their fermentation products:

• A. Phenylacetic-acid related compounds → II. Penicillin V

  • Phenylacetic acid derivatives are used in the production of Penicillin V, which is a type of penicillin antibiotic.

• B. Phenoxy acetic acid → I. Penicillin G

  • Phenoxy acetic acid is a precursor used in the synthesis of Penicillin G, another form of penicillin antibiotic.

• C. Cyanides → IV. Cyclosporin C

  • Cyanides are precursors used in the production of Cyclosporin C, an immunosuppressive drug.

• D. L-Threonine → III. Vitamin B12

  • L-Threonine is a precursor in the biosynthesis of Vitamin B12, which is essential for human health and metabolism.

Conclusion:

The correct answer is Option 1: A- II, B-I, C-IV, D-III. This pairing correctly matches the precursors with their respective fermentation products.