Doppler radar shows a vertical rotating column of air which high wind speeds. which is most likely occurring?

What maintain homeostasis when a persons internal body temperature is 97.5°f

Describe the layers of the suns atmosphere?

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.