What is the best illustrated by watson and cricks ball-and-stick model of DNA

Mrna decodes information from the original dna master plan to build proteins in the during the process of ribosomes.

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false