On a microscopic scale, the energy change in a system is described by a a. A change in color or texture
b. Measuring the temperature
c. A chemical equation
d. An odor

cell regulation is conducted by special proteins.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.

69 is the correct math for the amino acids