Cell Transport RW (7) 21-22

What is movement of substances from an area of higher to lower concentration called?

• Endocytosis

• Diffusion

• Exocytosis

• Active Transport

What type of cell transport requires energy in order to move substances across the cell membrane?

• Active

• Passive

Which of the following pass through a cell membrane without additional energy required?

• Small molecules

• Small non-polar molecules

• Water molecules

• All of these.

What does it mean by saying that a substance is moving with or down the concentration gradient?

• It is moving from low to high concentration levels.

• It is moving from high to low concentration levels.

• The substance is moving in equal amounts.

• None of these

Do cells exist in water environments?

• Yes

• No

Which of the following is NOT an example of passive transport.

• Diffusion

• Endocytosis

• Facilitated Diffusion

• Osmosis

Which type of diffusion uses special membrane proteins to move molecules across the membrane from an area of higher to lower concentration?

• Diffusion

• Exocytosis

• Active Transport

• Facilitated Diffusion

Which of the following is a reason that molecules must move from high to low concentration through the cell membrane using a channel protein?

• Small non-polar molecules

• Large molecules

• Active Transport

• Non-circular in shape

Which of the following are types of proteins that can be found in the cell membrane?

• Channel Proteins

• Carrier Proteins

• Protein Pumps

• All of these.

What is the name of the water channel proteins that assist with the processes of osmosis?

• Aquaman

• Aquafirs

• Nuclear Pores

• Aquaporins