Cell Transport

What is concentration?

• The amount of a substance in a defined space

• The movement of particles across the cell membrane

• The process of making proteins

• The control of what enters and exits the cell

What is the movement of particles or molecules across the cell membrane dependent on?

• The difference in concentration on either side of the membrane

• The amount of proteins in the cell

• The size of the cell

• The type of solutes present

Why does diffusion occur?

• Because of the random motion of particles

• Because of the use of energy

• Because of the concentration gradient

• Because of the cell membrane

What is the main difference between active and passive transport?

• Active transport requires energy, while passive transport does not

• Passive transport requires energy, while active transport does not

• Active transport moves molecules from lower to higher concentration, while passive transport moves molecules from higher to lower concentration

• Passive transport moves molecules from lower to higher concentration, while active transport moves molecules from higher to lower concentration

What is osmosis?

• Movement of solutes across a semipermeable membrane

• Movement of water across a semipermeable membrane

• Movement of molecules through protein channels

• Movement of water without the use of protein channels

Tags

NGSS.MS-LS1-2

What happens to water molecules during osmosis?

• They move to the area of lower concentration

• They move to the area of higher concentration

• They move to the area of equal concentration

• They do not move

What is the main difference between facilitated diffusion and osmosis?

• Facilitated diffusion involves water, osmosis involves solutes

• Facilitated diffusion involves solutes, osmosis involves water

• Facilitated diffusion does not involve protein channels, osmosis does

• Facilitated diffusion and osmosis are the same

What happens when the concentration inside the cell becomes more concentrated than its surroundings?

• Water flows out of the cell

• Water flows into the cell

• Solutes flow into the cell

• Solutes flow out of the cell

Tags

NGSS.HS-LS1-3

What is the function of the semipermeable membrane in osmosis?

• To allow solutes to pass through

• To block water from passing through

• To allow water to pass through but block solutes

• To allow both water and solutes to pass through

What is the result of water flowing into the cell during osmosis?

• The concentration inside the cell decreases

• The concentration inside the cell increases

• The concentration inside the cell remains the same

• The concentration inside the cell becomes zero