Cell Structure and Function

What is the function of aquaporins in the membrane?

• Transport ions
• Synthesize ATP
• Store glucose
• Facilitate rapid water transport

What happens to a plant cell in a hypotonic solution?

• It shrinks
• It lyses
• It becomes flaccid
• It becomes turgid

What happens to a red blood cell placed in a hypertonic solution?

• It bursts
• It remains unchanged
• It divides rapidly
• It shrinks

Which of the following is a feature of integral membrane proteins?

• Found only on the outer surface
• Attached temporarily to the membrane
• Made entirely of carbohydrates
• Embedded within the lipid bilayer

What is the role of cholesterol in the plasma membrane?

• Provides energy
• Stores genetic material
• Synthesizes proteins
• Maintains membrane fluidity