Cell Membrane Transport

Movement of molecules against a gradient from a region of low concentration to high concentration; requires energy (ATP)

(e.g., Na+/K+ pumps)

• Passive Transport

• Active Transport

• Diffusion

• Concentration Gradient

difference in concentration of a substance on two sides of a membrane

• Concentration Gradient

• Diffusion

• Cell Transport

• Molecules

The boundary of any cell that is semipermeable

• Cell Membrane

• Cell Wall

• Boundary

• Plasma Membrane

Tags

NGSS.MS-LS1-2

Movement of molecules down a gradient from a region of high concentration to a region of low concentration; no energy required

• Passive Transport

• Active Transport

• Cell Transport

• Concentration Gradient

Diffusion that requires membrane channels; larger, polar molecules

• Concentration Gradient

• Forced Diffusion

• Facilitated Diffusion

• Passive Diffusion

Type of diffusion where water diffuses across a membrane

• Diffusion

• Infusion

• Passive Distribution

• Osmosis

Movement of molecules from an area of higher concentration to an area of lower concentration.

• Osmosis

• Diffusion

• Passive Transport

• Active Transport

A property of a plasma membrane that allows some substances to cross more easily than others.

• Non-conforming permeability

• Cell reduction

• Selective permeability

• Passive transport

A membrane protein that is responsible for moving hydrophilic substances from one side to the other.

• Transport Protein

• Facilitated Protein

• Protein Synthesis

• Lipid Synthesis

A molecule that is a makes up the inner bilayer of biological membranes, having a polar, hydrophilic head and a nonpolar, hydrophobic tail.

• Lipid

• Phospholipid

• ATP

• Carbohydrate