Why do all cellular activities in living organisms use as a source of energy? a. atp b. lactic acid c. pyruvic acid d. dna

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

Cattle with brown fur and cattle with white fur will produce a reddish roan calf . when examined closely, the calf show about an even number of brown hairs and white hairs that give a reddish appearance when viewed from far away. the fact that both the brown fur allele and the white fur allele are expressed equally in the offspring is an example of