Cell Structure and Function

What is the function of the plasma membrane in terms of cell identity?

• Generates heat
• Absorbs sunlight
• Stores fat
• Helps in cell recognition

What is the main reason why water requires special channels to pass through the membrane quickly?

• It is too large
• It is negatively charged
• It is always bound to ions
• It is polar and cannot pass efficiently through the hydrophobic core

What is the primary function of the endomembrane system?

• Generate ATP
• Carry out photosynthesis
• Control gene expression
• Coordinate activities of membranous organelles

What is the significance of the lipid bilayer being amphipathic?

• It prevents any transport
• It blocks ion flow
• It makes the membrane rigid
• It allows the membrane to form spontaneously in water

What is the role of the middle lamella in plant tissue?

• To allow cell division
• To absorb water
• To carry out photosynthesis
• To bind adjacent cells together