Question

Which substance on the plasma membrane helps identify chemical signals from outside the cell?

Question 32 options:

carbohydrate chain

cholesterol

membrane protein

transport protein

Answer 1

The correct option is A) carbohydrate chain

Step-by-step explanation:

The carbohydrate chain present in the cell membrane helps determine the characteristics of the cell and it also helps to identify the chemical signals from outside the cell. Hence, option A is correct.

Other options, like option B, is not correct because the function of the cholesterol in the cell membrane is to prevent the fatty acids from sticking together. Option D is not correct because transport proteins help some molecules to move inside the cell.