Please identify the stimulus (S) and response (R). A dog is hot so he lies in the shade.
Which is the stimulus?
A. Dog gets hot.
B. Dog finds shady spot.

What happens during interphase? (1)the nucleus grows to its full size. (2)the cell grows to its full size. (3)the nucleus divides into two nuclei. (4)the cell divides into two cells.

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

When the cell concentrates potassium within, against the natural tendency of matter, it is performing a.passive diffusion b.facilitated diffusion c.active transport d.pinocytosis