cell membrane

active transport

cells must use cellular energy to transport materials against a concentration against a common gradient, that is an area of low concentration to high concentration

aquaporins

specific proteins only meant to move water

active transport

cells must use cellular energy to transport materials against a concentration against a common gradient, that is an area of low concentration to high concentration

aquaporins

specific proteins only meant to move water

carbohydrates

broken down to glucose to provide energy

cell membrane

regulates the movement of materials in and out of the cell

cell wall

A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.

cell transport

Passive and active transport; moving materials across a cell membrane

cell wall

A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.

diffusion

movement of molecules from an area of higher concentration to lower concentration

endocytosis

The process of taking materials into the cell by means of an infolding into the cell membrane.

Exocytosis

the process of releasing large amounts of material outside the cell.

facilitated diffusion

Process of diffusion in which molecules pass through channel proteins, used by molecules that cannot diffuse correctly. Channels are specific to the proteins they let cross.

Fluid-Mosaic Model

Conceptual model of the cell membrane. Describes the cell membrane with a lipid bilayer in which proteins and other molecules are embedded.

Lipid Bilayer

A flexible double-layered sheet that makes up the cell membrane and forms a barrier between the cell and its surroundings.

Osmosis

Diffusion of water through a selectively permeable membrane.

Passive Transport

Movement of materials across a cell membrane without using cellular energy-3 types

Proteins

Nutrients the body uses to build and maintain its cells and tissues

Receptor

Movement of materials across a cell membrane without using cellular energy-3 types

Selectively permeable

A property that allows same substances to pass through a membrane but blocks others

Solute

a substance dissolved in the solution

Solvent

the substance doing the dissolving