Which of the following statement is not correct

Options

A. Ovalbumin is a simple food reserve in egg-white
B. Blood proteins thrombin and fibrinogen are involved in blood clotting
C. Denaturation makes the proteins more active
D. Insulin maintains sugar level in the blood of a human body

Explanation

To determine which of the statements is not correct, let's analyze each statement one by one:

1. **Statement 1**: "Ovalbumin is a simple food reserve in egg white."
- **Analysis**: Ovalbumin is indeed a protein found in egg white and serves as a food reserve for the developing embryo. This statement is correct.

2. **Statement 2**: "Blood proteins, thrombin and fibrinogen are involved in blood clotting."
- **Analysis**: Thrombin and fibrinogen are both crucial components in the blood clotting process. Thrombin converts fibrinogen into fibrin, which helps form blood clots. This statement is also correct.

3. **Statement 3**: "Denaturation makes the proteins more active."
- **Analysis**: Denaturation refers to the process where proteins lose their native structure due to external stress (such as heat or pH changes), which typically results in a loss of biological activity. Therefore, this statement is incorrect because denaturation makes proteins less active, not more active.

4. **Statement 4**: "Insulin maintains the level of sugar in the blood."
- **Analysis**: Insulin is a hormone that plays a key role in regulating blood sugar levels by facilitating the uptake of glucose into cells. This statement is correct.

**Conclusion**: The statement that is not correct is Statement 3: "Denaturation makes the proteins more active."