Yeast is a good source of
(I) B-complex vitamins
(II) Sulphur containing amino acids
(III) proteins

Options

A. I & II only
B. I & III only
C. III and IV
D. II and IV

Answer

To solve the question "Yeast is a good source of," we need to evaluate the options provided:

1. **Identify the components in the question:**
- We have three options to consider:
- (I) B-complex vitamins
- (II) Sulphur containing amino acids
- (III) Proteins

2. **Research the nutritional value of yeast:**
- Yeast, particularly Saccharomyces cerevisiae, is known to be a rich source of various nutrients.
- It is widely recognized for its high content of B-complex vitamins, which include vitamins such as B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6 (pyridoxine), B7 (biotin), B9 (folate), and B12 (cobalamin).
- Yeast also contains proteins, making it a valuable source of amino acids.

3. **Evaluate each option:**
- (I) B-complex vitamins: Yes, yeast is a good source.
- (II) Sulphur containing amino acids: While yeast does contain amino acids, it is not specifically known for being a rich source of sulphur-containing amino acids.
- (III) Proteins: Yes, yeast is a good source of proteins.

4. **Determine the correct combinations:**
- Based on the evaluations:
- Yeast is a good source of (I) B-complex vitamins and (III) proteins.
- Therefore, the correct answer must include options (I) and (III).

5. **Select the correct answer from the options:**
- The options provided are:
- Option A: 1 and 2 only
- Option B: 1 and 3 only
- Option C: 3 and 4 (not applicable as there is no 4)
- Option D: 2 and 4 (not applicable as there is no 4)
- The only option that includes both (I) and (III) is Option B: 1 and 3 only.

**Final Answer:**
Yeast is a good source of B-complex vitamins and proteins. The correct answer is Option B: 1 and 3 only.

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