Cells - Plasma Membrane

What is the primary role of the plasma membrane in animal cells?

• To separate and protect the cell's contents from the external environment

• To provide energy to the cell

• To produce proteins

• To store genetic information

Which of the following is a component of the plasma membrane that helps in binding external molecules?

• Cholesterol

• Cytoskeleton

• Phospholipids

• Receptor proteins

What is the function of channel proteins in the plasma membrane?

• To create openings for nutrient and product movement

• To produce hormones

• To provide structural support

• To store energy

How does the plasma membrane facilitate the movement of small molecules like oxygen?

• Via endocytosis

• Using exocytosis

• Through active transport

• By diffusion

What is the result of the plasma membrane acting as a barrier to certain ions and compounds?

• Creation of an osmotic gradient

• Formation of a genetic code

• Synthesis of proteins

• Production of ATP