Which of the following was rudolf virchow's contribution to our understanding of cells?

cells are the basic units of life.
all living things are made of cells.
cells can be categorized as either prokaryotes or eukaryotes.
all cells are produced from existing cells.

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule

Each hereditary trait corresponds to

20 the compound al(nh3)2 has atoms of nitrogen.