9. A DNA nucleotide is composed of

A) carbon, hydrogen, oxygen, nitrogen, and

phosphorus

B) carbon, hydrogen, nitrogen, sulfur, and calcium

C) calcium, hydrogen, oxygen, phosphorus, and

iron

D) oxygen, hydrogen, phosphorus, sulfur, and iron

Which example describes a mutualistic relationship between organisms? a. Young wasps prey on caterpillars. b. Crabs eat the remains of dead fish. c. Ants protect a tree on which they feed. d. Tapeworms feed on food in the intestines of cats

How many parent cells take part in budding?

Which of the following is NOT one of the body's chemical buffering systems? a) hydrochloride b) protein c) bicarbonate d) phosphate

The superior vena cava empties what

Although Mr. Yanagita has recently learned to play poker quite well, he cannot consciously remember ever having played poker. It is likely that he has suffered damage to his a. brainstem. b. cerebellum. c. hypothalamus. d. hippocampus. e.

A) What are the bases of mRNA coded for by this section of DNA before the mutation? Hint in RNA A pairs with U.

How does secondary succession differ from primary succession? It begins where no plants have grown. It begins on bare rock or land. Soil nutrients are already in place. Lichens and mosses form soil first.

True of False? The structure of the cell membrane is what allows water and other molecules to move in and out of cells.

Dolphins and fish have similar body shapes. isthis feature more likely a homologous or analogoustrait?

Which of the following is not a phase of gastric secretion? A. cephalic B. gastric C. intestinal D. enterogastric