Read the following statements carefully
(A) Albumin is a simple protein
(B) The amino acid alanine contains an acidic side chain
(C) Insulin is a hormone
(C) Muscles contain the protein keratin

Options

A. A,B
B. C,D
C. A,C
D. B,D

Explanation

To analyze the statements given in the question, we will evaluate each statement one by one.

**Step 1: Evaluate Statement (A) - "Albumin is a simple protein."**
- Albumin is indeed classified as a simple protein. It is a globular protein that is soluble in water and is found in various biological fluids, such as blood plasma. Therefore, this statement is **true**.

**Step 2: Evaluate Statement (B) - "The amino acid alanine contains an acidic side chain."**
- Alanine is an amino acid with the chemical structure NH2-CH(CH3)-COOH. The side chain of alanine is a methyl group (CH3), which is non-polar and does not have acidic properties. Therefore, this statement is **false**.

**Step 3: Evaluate Statement (C) - "Insulin is a hormone."**
- Insulin is a well-known hormone produced by the pancreas that regulates glucose levels in the blood. Therefore, this statement is **true**.

**Step 4: Evaluate Statement (D) - "Muscles contain the protein keratin."**
- Keratin is a structural protein found in hair, nails, and the outer layer of skin, but it is not found in muscle tissue. Muscle tissue primarily contains proteins like myosin and actin. Therefore, this statement is **false**.

**Conclusion:**
- The correct statements are (A) and (C), while (B) and (D) are incorrect. Thus, the statements that are not correct are (B) and (D).

**Final Answer:**
- Statements (B) and (D) are not correct.

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