Cell Membrane & Diffusion

Select the processes which are passive and do not require energy

• Diffusion

• Active Transport

Which cell structure controls the entry and exit of molecules?

• Cell Wall

• Cell Membrane

• Nucleus

• Cytoplasm

Which of the following molecules is too large to pass through a selectively-permeable membrane?

• Glucose

• Starch

• Salt

• Water

Which two molecules make up the cell membrane?

• Protein and Lipids

• Protein and Phospholipids

• Starch and Protein

• Protein and Glucose

Diffusion is the movement of molecules from...

• An area of high concentration to an area of low concentration.

• An area of low concentration to an area of high concentration.

Select all of the molecules which move into a cell.

• Carbon Dioxide

• Urea

• Glucose

• Oxygen

• A

• B

• C

• D

When substances move from an area of high concentration to an area of low concentration, this is:

• Endocytosis

• Diffusion

• Phagocytosis

• Active Transport

Select all of the molecules which move out of a cell.

• Carbon Dioxide

• Urea

• Glucose

• Oxygen

Which type of transport requires an input of energy?

• Active Transport

• Osmosis

• Facilitated diffusion

• Simple diffusion