Most abundant protein in the human body is

Options

A. Haemoglobin
B. Keratin
C. Collagen
D. Immunoglobulin.

Answer

To answer the question "Most abundant protein in the human body is," we can follow these steps:

### Step 1: Identify the Proteins Mentioned
First, we need to consider the proteins that are commonly known to be present in the human body. The video transcript mentions several proteins: collagen, hemoglobin, keratin, and immunoglobulins.

### Step 2: Understand the Role of Each Protein
- **Collagen**: This is a structural protein that is a major component of connective tissues, such as tendons, ligaments, and skin.
- **Hemoglobin**: This is a quaternary protein responsible for transporting oxygen in the blood.
- **Keratin**: This is a fibrous protein found in hair, nails, and the outer layer of skin.
- **Immunoglobulins**: These are antibodies that play a crucial role in the immune response.

### Step 3: Determine the Abundance of Each Protein
Among the proteins listed:
- Collagen is known to be the most abundant protein in the human body, making up a significant portion of the total protein content.
- Hemoglobin, keratin, and immunoglobulins, while important, do not surpass collagen in terms of abundance.

### Step 4: Conclude the Answer
Based on the information gathered, we can conclude that the most abundant protein in the human body is **collagen**.

### Final Answer
The most abundant protein in the human body is **collagen**.

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