Transport of material into a cell against a concentration gradient, from low to high, requires A.
Water

B.
Energy

C.
Osmosis

D.
Diffusion

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

Which of the following is a physical property flammability heat of combustion solubility and toxicity

Under which circumstances are kp and kc equal for the reaction aa(g)+bb(g)⇌cc(g)+dd(g)?