Quiz on Abs Diffusion and Passive Transport

What is a concentration gradient?

• A difference in temperature between two areas

• A difference in the concentration of a substance between two areas

• A difference in pressure between two areas

• A difference in volume between two areas

Tags

NGSS.HS-PS1-5

What is diffusion?

• The movement of molecules against a concentration gradient

• The movement of molecules that requires energy

• The movement of molecules from high to low concentration

• The movement of molecules from low to high concentration

Tags

NGSS.HS-PS1-5

Which of the following is an example of simple diffusion?

• Water moving into plant roots

• Oxygen diffusing from the lungs into the blood

• Glucose entering a cell

• Sodium ions moving through a channel

What type of transport is facilitated diffusion?

• Passive transport

• Filtration

• Active transport

• Osmosis

What happens to a cell in a hypertonic solution?

• It remains the same

• It shrinks

• It swells

• It bursts

Tags

NGSS.HS-LS1-3

What is osmosis?

• The diffusion of water across a selectively permeable membrane

• The diffusion of solutes across a membrane

• The movement of large molecules through protein channels

• The movement of molecules against a concentration gradient

Which type of protein helps larger molecules pass through the membrane?

• Carrier proteins

• Structural proteins

• Receptor proteins

• Channel proteins

What is the main function of filtration in the kidneys?

• To regulate blood pressure

• To produce hormones

• To remove waste from blood

• To absorb nutrients

What is required for active transport?

• No energy is needed

• It relies on diffusion

• Energy is needed

• It occurs naturally

What type of channel opens in response to a change in voltage?

• Passive channels

• Voltage-gated channels

• Mechanically-gated channels

• Ligand-gated channels