Cell Transport Review

What is a phospholipid composed of?

• A polar head and tail
• A nonpolar head and tail
• A polar head and a nonpolar tail
• A nonpolar head and a polar tail

Which word best describes the structure of the cell membrane?

• Layered
• Rigid
• Impermeable
• Nonpolar

Which term refers to the movement of molecules from high to low concentration?

• Endocytosis
• Diffusion
• Active transport
• Exocytosis

Which term refers to the diffusion of water molecules through a selectively permeable membrane?

• Osmosis
• Active transport
• Passive transport
• Facilitated diffusion

The movement from high to low concentration across a cell membrane using a transport protein is

• Osmosis
• Active transport
• Passive transport
• Facilitated diffusion

Which term refers to the transport of materials across the membrane using the cell's energy?

• Osmosis
• Active transport
• Passive transport
• Facilitated diffusion

Which type of transport uses energy to pump material against the concentration gradient?

• Passive transport
• Diffusion
• Osmosis
• Active transport

When molecules have reached equilibrium across a cell membrane, they

• Move out of the cell
• Move into the cell
• Move in and out at an equal rate
• Stop moving

A solution that causes a cell to shrink is called

• Hypertonic
• Hypotonic
• Isotonic
• Endocytosis

When particles are too large to pass through the membrane into the cell, the process used is

• Passive transport
• Active transport
• Endocytosis
• Exocytosis