The cycle of events that initiates gonadarche involves signals from the hypothalamus to the pituitary gland, which secretes hormones that in turn stimulate production of hormones in the

The process by which natural forces move weathered rock and soil brim one place to another is called

What is the farthest destination to date for a human spaceflight mission?

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.