1.4 Review IB bio

By which process do potassium ions move through channels in axons?

• active transport

• exocytosis

• facilitated diffusion

• simple diffusion

Which type of membrane transport is responsible for the process shown?

• osmosis

• active transport

• facilitated diffusion

• exocytosis

What are the mode of transport is represented by "I" ?

• simple diffusion

• active transport

• osmosis

• facilitated diffusion

What are the mode of transport is represented by "II" ?

• simple diffusion

• active transport

• osmosis

• facilitated diffusion

The salt concentration inside an animal cell is 1.8 %. The salt concentration in the surrounding medium becomes 5 %. What will be the likely response?

The cell will

• gain water

• lose salt

• remain unchanged

• shrink