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David Keilin is associated with...

David Keilin is associated with

A

NAD

B

FAD

C

CoQ

D

Cytochromes

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the Question**: The question asks about the association of David Keilin. 2. **Analyze the Options**: The options provided are: - Option 1: NAD - Option 2: FAD - Option 3: Coenzyme Q - Option 4: Cytochrome 3. **Evaluate Each Option**: - **Option 1 (NAD)**: This option is incorrect. NAD (Nicotinamide adenine dinucleotide) was discovered by Charles Brenner. - **Option 2 (FAD)**: This option is also incorrect. FAD (Flavin adenine dinucleotide) is a cofactor for various enzymes, but it was not discovered by David Keilin. - **Option 3 (Coenzyme Q)**: This option is incorrect as well. Coenzyme Q (also known as ubiquinone) was discovered by Karl Falker. - **Option 4 (Cytochrome)**: This is the correct option. David Keilin is known for rediscovering cytochrome and elucidating its role in cellular respiration in 1925. 4. **Conclusion**: Based on the evaluation, the correct answer is **Option 4: Cytochrome**. ---
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