Individual atoms of each element all have an equal number of protons and neutrons. only the number of electrons may vary. t or f

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 class of molecules functions as chemical signals? hormones water carbohydrates proteins

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