Dissolved substances have to pass through a to get into and out of a cell.

Diffusion is ONE process that allows this to happen.
Examples of substances: ,,,
,

All living things rely on diffusion to live. They use it for:
Getting
Removing
Plants use of

Astudent is working on an experiment to study the cooling curve of water. during the experiment, a beaker containing hot water falls to the floor and is shattered. the student’s immediate response should be to

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?