State the following statements as true (T) or false (F) and select the correct option.

A. Integral proteins are partially or totally buried in the membrane.

B. Human RBC membrane has approximately 52% proteins.

C. Proteins move laterally within overall bilayer of membrane.

      A   B   C

1.   T   T   T

2.   F   T   F

3.   T   F   T

4.   F   F   T

Read the following statements and choose the option which is true for them.

Statement-1: Polar molecules cannot pass through lipid bilayer of plasma membrane by self.

Statement-2: Polar molecules require carrier proteins to facilitate their transport across the membrane.

1. Both the statements are correct

2. Both the statements are incorrect

3. Only statement-1 is correct

4. Only statement-2 is correct

Read the following statements carefully:

How many statements are incorrect?

1.  Three

2.  Five

3.  Four

4.  Two