the movement of particles from an area where their concentration is high to an area that the concentration is low. This can occur across cell membranes or outside the cell. No energy needed for this to occur.
makes up the cell membrane they are small and some particles can pass through them.
the diffusion of particles through the proteins goes from high concentration to low concentration with no energy needed. .
the movement of particles through proteins against the normal directions of diffusion. Particle go from low concentration to high use energy that comes from ATP
stores energy in a form that cells can use. Molecule that stores energy to fuel activities of the cell.
the cell membrane surrounds a particle and encloses it to form a vesicle. Can bring in other cells this way
vesicles formed at the endoplasmic reticulum or Golgi complex and carry the particles to the cell membrane and out of the cell.
use to obtain energy from food. uses oxygen. Food -glucose is broken down into CO2 and H20 and energy is released. eukaryotes_ takes place in mitochodria.
does not use oxygen. To produce small amounts of atp and products from the partial breakdown of glucose. Can occue in muscles and produces lactic acid
lactic acid fermentation
in muscle causes muscle fatigue after strenous activity. occurs in animals and some types of fungi and bacteria