3.3 Cell Transport/Homeostasis

Passive transport needs energy.

• False

• True

Active transport needs energy.

• True

• False

Controlling what enters and leaves the cell in an important function of the

• nucleus

• vesicle

• plasma(cell) membrane

• Golgi apparatus

Carrier proteins change shape when they transport substances.

• True

• False

During diffusion, substances move from an area of ____________ concentration to an area of ____________ concentration.

• higher, lower

• higher, equal

• lower, higher

• lower, equal

The sodium-potassium pump

• uses energy move sodium ions out of cell and potassium ions into the cell

• uses energy move potassium ions out of cell and sodium ions into the cell

• moves sodium ions out of cell and potassium ions into cell without energy

• moves potassium ions out of cell and sodium ions into cell without energy

Tags

NGSS.HS-LS1-3

Osmosis

• is the diffusion of water and other small molecules.

• is the diffusion of water.

• is the diffusion of water and small ions

• is the diffusion of small molecules and ions

A channel protein does which of the following?

• Carries ions or molecules across the membrane

• Forms tiny holes in the membrane

• Changes shape as it transports molecules

• all of these

Facilitated diffusion does not require any help from other molecules.

• False

• True

passive transport include following? 1simple diffusion,2 osmosis,3 facilitated diffusion,4 active transport 5 vesicle transport

• 1 and 2

• 1, 2, and 3

• 4 and 5

• all of them