Bio Unit 2-Cell Membrane and Transport

Passive transport

• Requires energy

• Does not require energy

• Sometimes needs energy

• x

Active transport

• Does not require energy

• Requires energy

• Sometimes requires energy

• x

Diffusion moves molecules from areas of (x) to (x) concentration

• High to low

• Low to high

• High to high

• Low to low

Why does diffusion occur?

• Because molecules don't move

• Because some molecules move and some don't

• Because molecules are always in motion

• x

Tags

NGSS.MS-PS1-4

Eventually the solution reaches (x), which is when both sides have even amounts of molecules to water

• Concentration gradient

• Passive transport

• Equilibrium

• Osmosis

The movement of water across the membrane is called (x)

• Diffusion

• Facilitated diffusion

• Osmosis

• Equilibrium

Molecules are seen moving (x) the concentration gradient when they move from high to low concentration

• Up

• Down

• Through

• Across

Later on after some time has passed equilibrium is reached. This means molecules move (x) across the membrane.

• Up

• Down

• Randomly

• x

Tags

NGSS.MS-LS1-2

Simple and facilitated diffusion are examples of (x) transport

• Passive

• Active

• x

• x

Facilitated (with help) diffusion uses (x) channels that move molecules down the concentration gradient.

• Protein

• Cholesterol

• Carbohydrate

• x