Cell Membrane & Transport

This forms a boundary between a cell and the outside environment and controls the passage of materials into and out of a cell

• Phospholipid

• Cell Membrane

• Vesicle

• Active Transport

A molecule composed of three basic parts:

A charged phosphate group

Glycerol

Two fatty acid chains

• nonpolar

• receptor

• vesicle

• phospholipid

The arrangement of the molecules that make up a cell membrane

• Fluid Mosaic Model

• Selective Permeability

• Organized Transport

• Cell Direction

A property of cellular membranes that only allows certain molecules to enter or exit the cell.

• Fluid Mosaic Model

• Endocytosis

• Selective Permeability

• Passive Transport

A protein that detects a signal molecule and performs an action in response

• Receptor

• Phospholipid

• Vesicle

• Ribosome

The movement of molecules across a cell membrane without energy input from the cell

• Active Transport

• Passive Transport

• Selective Permeability

• Diffusion

The movement of molecules in a fluid or gas from a region of higher concentration to a region of lower concentration

• Active Transport

• Passive Transport

• Diffusion

• Concentration Gradient

The difference in the concentration of a substance from one location to another

• Selective Permeability

• Concentration Gradient

• Osmosis

• Facilitated Diffusion

When water molecules move across a semipermeable membrane from an area of higher water concentration to an area of lower water concentration

• Diffusion

• Osmosis

• Hypotonic

• Hypertonic

When a solution has the same concentration of dissolved particles as the cell.

• Isotonic

• Hypertonic

• Hypotonic

• Osmosis