Cell Transport Review

What is the movement of particles from an area of high concentration to an area of low concentration called?

• Active transport

• Facilitated diffusion

• Osmosis

• Diffusion

What is the movement of water molecules across a selectively permeable membrane called?

• Osmosis

• Active transport

• Diffusion

• Endocytosis

Which type of transport uses protein channels to move molecules across the cell membrane from an area of high concentration, to low concentration?

• Endocytosis

• Osmosis

• Active transport

• Facilitated diffusion

Which type of transport moves substances from low to high concentrations (against the concentration gradient)?

• Osmosis

• Passive transport

• Facilitated diffusion

• Active transport

Which type of transport is responsible for the movement of sodium, calcium or potassium across the cell membrane?

• Osmosis

• Facilitated diffusion

• Active transport

• Passive transport

Which type of transport requires the input of ATP?

• Passive transport

• Facilitated transport

• Osmosis

• Active transport

Which type of transport moves particles from high to low concentrations (with the concentration gradient)?

• Passive transport

• Active transport

• Endocytosis

• Exocytosis

Imagine Lily and Ethan are conducting a fun science experiment. Lily carefully adds two drops of vibrant green food coloring to a beaker brimming with crystal-clear water. They eagerly watch the clock tick by, and after 5 exciting minutes, they observe with amazement as the water transforms into a uniform shade of pale green. With a high-five, they conclude that the process of __________ has magically caused the dye to spread evenly throughout the water.

• diffusion

• osmosis

• active transport

• facilitated diffusion

1. An amoeba is a single-celled organism. Amoebas extend their cell membrane around a food particle or prey organism. Then, they bring the food into the cell, as is shown in the illustration.

Which term best describes the cell process amoebas use to get food?

• endocytosis

• exocytosis

• passive transport

• facilitated diffusion

What is the main difference between active transport and passive transport?

• During active transport the water inside the cell is used to transport substances throughout the cell. Passive transport uses the cell’s cytoplasm to move substances around the cell.

• Passive transport moves substances throughout the cell without using the cell's energy and active transport moves substances using the cell’s energy.

• Active transport moves substances from higher concentrations to lower concentrations and passive transport moves substances from lower concentrations to higher concentrations.

• Passive transport moves substances that are too large to get through the cell membrane by forming a vesicle inside the cell and active transport forms the vesicle on the outside of the cell.