Long-period comets come from a)the oort cloud b)the kuiper belt c)material from the asteroid belt d)particles in earth’s atmosphere don't waste my points.

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Every early childhood education program should develop a

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.