Chemicals that are release from the axonal ends of neurons are called?

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

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.

What tool do geneticists use to predict the outcome of genetic crosses? a.karyotype b.punnett square c.centrifuge