Unit 04 Transport

Which word describes the cell membrane?

• Impermeable

• Semipermeable

• Permeable

If energy is required to pass through the membrane then it is

• Active Transport

• Passive Transport

_______ is the movement of molecules from an area of higher concentration to an area of lower concentration

• Active Transport

• Osmosis

• Diffusion

• Fusion

Is the sugar from the sugar cube in water example the solute or solvent?

• Solute

• Solvent

• Both Solute and Solvent

• Neither Solute and Solvent

Which of the following must be true for diffusion to occur?

• molecules or particles must have different sizes

• special protein channels must always be available

• there must be areas of different concentrations

• energy must be available

Which term refers to the condition that exists when no net change in concentration results from diffusion?

• concentration

• equilibrium

• osmosis

• randomness

Air has a higher concentration of oxygen molecules than does the cytoplasm of your lungs. Where in your lungs will there be a net increase of oxygen?

• in the air breathed in

• in the air breathed out

• outside of the lung cells

• inside of the lung cells

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Which of the following statements tells how facilitated diffusion differs from simple diffusion?

• Particles move through cell membranes without the use of energy by cells

• Particles tend to move from high concentration to lower concentration

• Particles move within channel proteins that pass through cell membranes

• Particles tend to move more slowly than they would be expected to move.

It’s Sunday morning and your parents are making breakfast in the kitchen. You’re able to smell the food upstairs as you lay in bed. This is best described as _______.

• Osmosis

• Diffusion

• Facilitated Diffusion

• Active Transport

Tags

NGSS.MS-LS1-8

As a result of diffusion, the concentration of many types of substances

• Always remains greater inside a membrane

• Eventually becomes balanced on both sides of a membrane

• Always remains greater outside of a membrane