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Which of the following statement is inco...

Which of the following statement is incorrect regarding cell coat ?

A

It is present in animals, bacteria and protistans.

B

In some cases cell coat is thickened by deposition of calcium, silicon and other salts.

C

It helps in recognition between microbe and body cell by WBCs and involved in histocompatibility.

D

It helps in cell aggregation and tissue formation.

Text Solution

AI Generated Solution

The correct Answer is:
To determine which statement is incorrect regarding the cell coat, also known as glycocalyx, we will analyze each option provided in the question. ### Step-by-Step Solution: 1. **Understanding Cell Coat (Glycocalyx)**: - The cell coat, or glycocalyx, is a layer that covers the outer surface of animal cells. It is primarily composed of carbohydrates, specifically oligosaccharides that are attached to proteins (glycoproteins) and lipids (glycolipids). 2. **Analyzing the Options**: - **Option 1**: "It is present in animals, bacteria, and protistians." - This statement is correct. Glycocalyx is indeed found in animals, bacteria, and protists. - **Option 2**: "In some cases, the cell coat is thickened by the deposition of calcium, silicon, and other salts." - This statement is incorrect. The glycocalyx is not typically thickened by calcium, silicon, or other salts; it is primarily composed of carbohydrates. - **Option 3**: "It helps in the recognition between microbe and the body cell via the white blood cell and involves in the histocompatibility." - This statement is correct. The glycocalyx plays a role in cell recognition and is involved in immune responses, including histocompatibility. - **Option 4**: "It helps in cell aggregation and tissue formation." - This statement is also correct. The glycocalyx aids in cell adhesion and the formation of tissues. 3. **Conclusion**: - The incorrect statement regarding the cell coat is **Option 2**. ### Final Answer: The incorrect statement regarding the cell coat is: **"In some cases, the cell coat is thickened by the deposition of calcium, silicon, and other salts."** ---
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