Cell Transport

The flexible boundary between a cell and its environment is the

• vacuole
• cell wall
• endoplasmic reticulum
• cell/plasma membrane

Diffusion occurs because

• molecules constantly move and collide
• the concentration of a solution never changes
• the concentration of a solution is always the same
• molecules never move or collide

Which is NOT an example of active transport?

• protein pump
• endocytosis
• facilitated diffusion
• exocytosis

The movement of water through a selectively permeable membrane is

• osmosis
• facilitated diffusion
• active transport
• passive transport

The movement of materials from low to high concentration is

• osmosis
• diffusion
• passive transport
• active transport

The substance dissolved in water (ex: sugar or salt) is called the

• solvent
• solute
• solution
• mixture

The movement of glucose into and out of red blood cells through a protein channel is an example of

• facilitated diffusion
• active transport
• osmosis
• endocytosis

Water moves in and out of a cell equally

• hypertonic
• hypotonic
• isotonic

Water moves into a cell (solution with the lesser concentration of solutes)

• hypotonic
• hypertonic
• isotonic

Water moves out of a cell (solution with the greater concentration of solutes)

• hypotonic
• hypertonic
• isotonic