Cell transport

cell transport

cell transport refers to movement into and out of the cell

cell membrane

a phospholipid bilayer that is semipremeable

diffusion

the movement of molecules from a high concentration to low concentration

simple diffusion

Simple diffusion is the process by which solutes are moved along a concentration gradient in a solution or across a semipermeable membrane.

concentration

is the number of molecules of a substance in a given area

active transport

In cellular biology, active transport is the movement of molecules or ions across a cell membrane

proteins bumps

uses energy to move molecules from low to high concentration

sodium potassium

sending signals to the never us system

bulk transport

moving of large particles or large amounts of substances in and out

endocytosis

The process in which cells taken large particles or large amounts of small particles

exocytosis

The process in which cells and materials out of the cell through vesicles that fuse to a membrane