Describe the theory of alkaline vents. what do you think about this? what is one major piece of evidence to support this theory? what is one major flaw with this theory (something happened that would have likely wiped out living things)?

What advantages does a pedigree have over a written passage?

Witch theory suggests all living things are made up of cell or cells

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.