What do all cellular activities in living organisms use as a source of energy? ATP
lactic acid
pyruvic acid
glucose

A.) ATP

I took the test and this was the correct answer!

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

answer; i do believe that the correct answer is; ///mendelian genes are at specific loci on the chromosome and, in turn, segregate during meiosis;