Sulphur (S) containing amino acids from the following are:
(a) isoleucine (b) cysteine (C)Iysine (d) methionine(e) glutamic acid

Options

A. a,b,c
B. b,d
C. b,c,e
D. a,d

Answer

To determine which of the given amino acids contain sulfur, we will analyze each option provided:

1. **Isoleucine**:
- Structure: Isoleucine is a branched-chain amino acid with the formula C6H13NO2. It does not contain sulfur in its structure.

2. **Cysteine**:
- Structure: Cysteine is an amino acid with the formula C3H7NO2S. It contains a thiol (-SH) group, which is responsible for the presence of sulfur.

3. **Lysine**:
- Structure: Lysine is a basic amino acid with the formula C6H14N2O2. It does not contain sulfur in its structure.

4. **Methionine**:
- Structure: Methionine is an essential amino acid with the formula C5H11NO2S. It contains a thioether group, which includes sulfur.

5. **Glutamic Acid**:
- Structure: Glutamic acid is an amino acid with the formula C5H9NO4. It does not contain sulfur in its structure.

From the analysis, we find that the amino acids containing sulfur are:

- **Cysteine (B)**
- **Methionine (D)**

Thus, the correct answer is options **B and D**.

### Step-by-Step Solution:
1. Analyze each amino acid option provided.
2. Identify the presence of sulfur in the structure of each amino acid.
3. Conclude that cysteine and methionine are the only sulfur-containing amino acids.