Question 18 of 25 An organism has the following traits: Multicellular • Can photosynthesize • Contains DNA in a nucleus What domain does this most likely belong in? A. Eukarya B. Bacteria O c. Archaea C) D. Protobion

Which characteristics are typical of a human population in the postindustrial stage?

This rapid change in species that rarely leaves behind fossil evidence is referred to as

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.