Cell Membrane and Diffusion

Osmosis is the movement of _____ across a membrane.

• food

• energy

• oxygen

• water

During osmosis

• water moves from high to low concentration

• large or oddly shaped molecules move across a cell membrane

• water moves when energy is used

• proteins are built

Permeable means

• things can pass through

• the concentration levels are different

• it is permanent

• things are stuck

Passive transport requires no

• concentration gradients

• osmosis

• motion

• energy

Match the following

• Movement of particles from an area of concentration to an area of lower concentratioin

• Selectively Permeable Membrane

• Diffusion of water molecules through a selectively permeable membrane

• Osmosis

• Allows some materials to pass through but keeps other materials out

• Diffusion

• Amount of substance in a given space

• Concentration

What is NOT TRUE about the cell membrane

• It controls what enters and leaves the cell

• Semipermeable

• Phospholipid bilayer

• Contains digestive enzymes

The cell membrane is made up of _______. (label E)

• fat cells

• phospholipids

• ribosomes

• water

Tags

NGSS.MS-LS1-2

What cell structure does this image represent?

• nucleus

• nuclear membrane

• cell membrane

• cytoplasm

Tags

NGSS.MS-LS1-2

What does label A represent?

• carbohydrate chain

• transport protein

• lipid bilayer

• cytoplasm

Tags

NGSS.MS-LS1-2

The cell membrane is made of a lipid _____.

• bilayer

• trilayer

• sandwich

• membrane

Tags

NGSS.MS-LS1-2