All organic molecules contain carbon, bonded to other elements. which of these elements would not be found in an organic molecule?
a. helium
b. hydrogen
c. nitrogen
d. oxygen

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

Dna and rna share a number of similarities, but they also differ in certain aspects of their structure. wich nitrogenous base is found in rna but is not found in dna