Cell Transport

moving molecules across the cell membrane against the concentration gradient is:

• passive transport by diffusion

• active transport using ATP

• passive transport by osmosis

• osmosis

In the diagram of a cross-section of a cell membrane, particles are moving from high concentration to low concentration using a carrier protein. This is an example of:

• simple osmosis

• active transport

• simple diffusion

• facilitated diffusion

In the diagram of a cross-section of a cell membrane, H+ ions are being pumped from an area of low concentration to an area of high concentration. This is an example of:

• active transport

• passive transport

• facilitated diffusion

• co-transport

The process where only water is allowed to pass through the cell membrane from a high to low concentration.

• meiosis
• respiration
• diffusion
• osmosis

In this image, the cell is using which type of molecular transport to move this large particle into the cell?

• Osmosis

• Diffusion

• Endocytosis

• Exocytosis

A cell will __________________ in a hypotonic solution.

• swell and perhaps burst (lyse)
• shrink
• the size of the cell will not change
• the size of the cell will change from large to small and from small to large

What is it called when molecules move across the cell membrane from an area of high concentration to an area of low concentration using a carrier protein?

• Diffusion

• Osmosis

• Active Transport

• Facilitated Diffusion

The cell below is in a _________ solution.

• Hypotonic
• Hypertonic
• Isotonic

In passive transport, substances move across the cell membrane ________ the concentration gradient

• AGAINST

• ALONG

• WITH

• BETWEEN

A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which of the following has occurred?

• The swollen gums have absorbed the saltwater solution.
• The saltwater solution lowers the temperature of the water in the gums.
• The salt in the solution has moved against the concentration gradient.
• The water in the gums has moved out due to the high concentration of salt in the solution.