Cell Transport

Only amoeba use phagocytosis to engulf particles.

• True
• False

When the concentration of dissolved salts is the same inside a cell as outside, the solution is __________________ with respect to the cell.

• hypotonic
• hypertonic
• isotonic
• equilibrium

Some needed substances are too large to enter cells by either diffusion or with a transport protein. These molecules enter by a process called:

• exocytosis
• absorption
• endocytosis
• facilitated diffusion

True or False? Animal cells have cell membranes; plant cells don't have cell membranes they have cell walls instead.

• True
• False

A membrane that is permeable to water as well as to some solute molecules is called:

• selectively permeable
• permeable
• impermeable
• all of these

Diffusion is the natural movement of molecules from:

• areas of low concentration to high concentration
• areas of high concentration to low concentration
• areas of high solute to low solute
• areas of low solute to high solute

Human blood is 0.85% saline solution. A solution with a lower salt concentration is called

• hypotonic
• hypertonic 
• isotonic
• equilibrium

The diffusion of water through a selectively permeable membrane is called

• passive transport
• active transport
• osmosis
• none of these

Cells will shrink if they are placed in a ______________  solution.

• hypertonic
• hypotonic 
• isotonic 
• equilibrium

Which of the following uses cellular energy?

• endocytosis
• exocytosis
• active transport
• all of these