F21 Cell Transport Review

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

• The swollen gums have absorbed the salt water 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 from a high to a low concentration of water.

Which is an example of osmosis?

• Potassium ions moving in and out of an animal cell.

• Carbon dioxide moving into the leaf cells of a plant.

• Oxygen moving into the bloodstream from the lungs.

• Water moving into the roots cells of a plant.

A freshwater plant is placed in a container of salt water. What will most likely happen to the cells of the plant?

• They will swell because water will move into them.

• They will swell because salt will move into them.

• They will shrink because water will move out of them.

• They will shrink because salt will move out of them.

If energy is needed to move materials into or out of a cell, what is most likely occurring?

• Active transport

• Passive transport

• Osmosis

• Diffusion

A student puts a bag of corn starch into a solution of iodine. Over time, he sees the starch beginning to change color, indicating the iodine has entered the bag. This is an example of ____________________.

• Osmosis

• Active Transport

• Diffusion

• Protein Pump

Which would be the best evidence that a cell is using active transport to move a substance across its cell membrane?

• Substances are moving rapidly across the cell membrane.

• ATP is being rapidly consumed near the cell membrane.

• Substances are moving from high to low concentrations.

• Substances are moving through channels in the cell membrane.

 Look at the diagram of a cross-section of a cell membrane below. The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane? 

• simple osmosis
• active transport
• simple diffusion
• facilitated diffusion

Tags

NGSS.MS-LS1-2

Look at the cross section of a cell membrane of a eukaryotic cell. H+ ions are being pumped from a low concentration to a high concentration. How do you describe this type of transport across the cell membrane?

• active transport
• passive transport
• facilitated diffusion
• co-transport

 In pure water, a red blood cell from an animal will swell and burst, but a leaf cell from a plant will not. Which structure in the leaf cell is responsible for this difference?

• cell membrane
• cell wall
•  mitochondrion
• nucleus

Tags

NGSS.MS-LS1-2

Which activity can occur without the use of energy?

• contraction of muscle tissue
• protein synthesis in a cell
• active transport of minerals
• movement of water across a membrane