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Which element is present in two amino ac...

Which element is present in two amino acids, cysteine and methionine, and is the main constituent of several coenzymes, vitamins (thiamine, biotin, CoA) and ferredoxin.

A

Sulphur

B

Boron

C

Molybdenum

D

Copper

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the Amino Acids**: The question mentions two amino acids: cysteine and methionine. Both of these amino acids are known to contain a specific element. 2. **Determine the Common Element**: The task is to find the common element present in both cysteine and methionine. Upon examining the structure of these amino acids, we can identify that both contain sulfur (S). 3. **Relate to Coenzymes and Vitamins**: The question also states that this element is a main constituent of several coenzymes and vitamins. Sulfur is indeed a key component of various coenzymes, such as Coenzyme A (CoA), and vitamins like biotin and thiamine. 4. **List Additional Compounds**: The question mentions ferredoxin, which is a protein that also contains iron-sulfur clusters, indicating the importance of sulfur in various biological molecules. 5. **Categorize the Nutrient**: In the context of plant nutrition, sulfur is classified as a macronutrient, meaning that plants require it in larger quantities compared to micronutrients. 6. **Conclude the Answer**: Based on the above analysis, the element that is present in both cysteine and methionine, and is a main constituent of several coenzymes and vitamins, is sulfur. **Final Answer**: Sulfur ---
**Step-by-Step Solution:** 1. **Identify the Amino Acids**: The question mentions two amino acids: cysteine and methionine. Both of these amino acids are known to contain a specific element. 2. **Determine the Common Element**: The task is to find the common element present in both cysteine and methionine. Upon examining the structure of these amino acids, we can identify that both contain sulfur (S). 3. **Relate to Coenzymes and Vitamins**: The question also states that this element is a main constituent of several coenzymes and vitamins. Sulfur is indeed a key component of various coenzymes, such as Coenzyme A (CoA), and vitamins like biotin and thiamine. ...
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