Hat alternate form of genes do nucleic acids have that allows them to offer variability? allele
codon
nucleotide
chromosome

What is the relation ship between structure and function in an organism

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

What is the next step in the process after a substrate enters the active site of an enzyme