Question

Which of the following statements is not correct?

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

Answer 1

The Correct Option is D

To determine which of the given statements is not correct, let's analyze each option:

1. Insulin maintains sugar level in the blood of a human body:
   This statement is correct. Insulin is a hormone produced by the pancreas that plays a crucial role in regulating blood sugar levels. It facilitates the uptake of glucose by the cells, thereby lowering blood sugar levels.
2. Ovalbumin is a simple food reserve in egg-white:
   This statement is correct. Ovalbumin is the main protein found in egg whites and serves as a storage protein, providing nourishment during embryonic development.
3. Blood proteins thrombin and fibrinogen are involved in blood clotting:
   This statement is correct. Thrombin is an enzyme that converts fibrinogen to fibrin during the blood clotting process, which is essential for wound healing and stopping bleeding.
4. Denaturation makes the proteins more active:
   This statement is not correct. Denaturation refers to the process in which proteins lose their tertiary and secondary structures due to the application of external stress like heat, pH changes, or chemical exposure, leading to the loss of biological activity. It often makes proteins less active or inactive.

Based on the above analysis, the incorrect statement is: Denaturation makes the proteins more active. It is because denaturation typically results in the loss of protein activity, not an increase. Therefore, this is the correct answer to the question about which statement is not correct.