The different shapes and function of different protiens detemined by A. The R groups of the amino acids they contain.
B. The amino acids of the amino acids they contain.
C. the carbonxyl groups of the amino acids they contain
D. whether or not they contain any amino acids .

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs

Which label identifies the part of the atp molecule that changes when energy is released in the cells of all living things