A nucleotide like ATP, which has a molecular weight of approximately 570 Daltons, would enter the nucleus by way of:A. passive diffusion across the nuclear envelope membranes. B. passive diffusion through nuclear pore complexes.

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

Graded assignment lab report answer the questions below. which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.