Cell Structure and Function

What is the process called when a cell takes in solid particles by engulfing them in a vesicle?

• Pinocytosis
• Exocytosis
• Phagocytosis
• Osmosis

Which type of transport moves molecules from a region of lower concentration to higher concentration requiring energy?

• Osmosis
• Diffusion
• Active Transport
• Facilitated Diffusion

What distinguishes osmosis from simple diffusion?

• It requires ATP for energy
• It moves molecules against their concentration gradient
• It involves the transport of ions only
• It specifically involves the movement of water through a semipermeable membrane

What is the function of the plasma membrane in animal cells related to cell shape?

• It produces energy for cell movement
• It stores genetic information
• It provides structural support to maintain cell shape
• It synthesizes proteins

How are integral proteins best described in the fluid mosaic model?

• Proteins attached only to the outer surface
• Proteins that penetrate the lipid bilayer partially or wholly
• Proteins found free in the cytoplasm
• Proteins that form the glycocalyx