Which of the following would be a good use for a nonmetal? a. handle of frying panb. electric wires c. structural components in buildingsd. coinage

Imagine that you have produced several versions of lactase, each of which differs from normal lactase by a single amino acid. describe a test that could indirectly determine which of the versions significantly alters the three-dimensional shape of the lactase protein.

Which characteristics can be used to differentiate star systems? check all that apply.

The excretory system,need answers for all: )