Which component makes each amino acid unique?
amino group
carboxyl group
r group
phosphate group

Idont think i'm understand this some one me! before we begin our discussion on evolutionary theory, reflect on your personal philosophical or religious views with regards to evolutionary theory. what is the difference between science and religion?

Identify the missing parts of the carbon cycle

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