7th - Evaluation Cell Transport

Osmosis is:

• The active movement of molecules from a region of low concentration to a region of high concentration.

• The movement of water through a partially permeable membrane from a more concentrated to a more diluted solution.

• Particles from a region of lower concentration to a region of higher concentration using energy from respiration.

• The movement of water through a partially permeable membrane from a dilute solution to a more concentrated solution.

Which of the plant cells above was placed in a hypotonic solution?

• A

• B

When placed in different solutions, animal cells will also change. Figure 2 shows a red blood cell. Describe what would happen if a red blood cell was put into an isotonic solution.

Tags

NGSS.HS-LS1-3

The image above the options shows a leaf palisade cell. What would be the correct appearance of the leaf palisade cell be after it has been placed in a highly concentrated solution of sugar after an hour?

• A

• B

• C

• D

What would happen to a houseplant if you water it with salt water (a hypertonic solution)?

• Its cells would not change shape

• The plant cells would get bigger

• The cells would lose water and the plant would wilt

• None above

Tags

NGSS.MS-LS1-2

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What is this picture an example of?

• Exocytosis

• Passive transport

• Active transport

• Endocytosis

What type of transport uses membrane proteins to passively move solutes (molecules)?

• Osmosis

• Facilitated diffusion

• Simple diffusion

• Active transport

• All options are correct.

Students are investigating DIFFUSION. They set up a container that is separated in the middle by a semipermeable membrane that will allow sugar molecules to pass through. The students fill one side of the container with a solution of 40% sugar and 60% water. What is expected to occur when pure water is added to the other side of the semipermeable membrane?

• All sugar molecules will move to one side of the membrane.

• All water molecules will move to one side of the membrane.

• Sugar molecules will remain on one side of the membrane.

• Sugar molecules will move across the membrane until the concentrations are equal.

The image below shows two solutions separated by a partially permeable membrane. Which of the statements below would be true in relation to the image?

• There is no net movement of water from W to X.

• There would be movement of water molecules from W to X.

• Osmosis of sugar molecules would occur from the dilute solution (W) to the concentrated solution (X).

• Solution X is more dilute and therefore water is going to move to W.

Which statement describes active transport?

• The movement of ions through proteins in a cell membrane, releasing energy

• The movement of water through phospholipids in a cell membrane, releasing energy

• The movement of ions through proteins in a cell membrane, using energy

• The movement of water through phospholipids in a cell membrane, using energy