A cell grows and carries out all normal metabolic functions and processes in a period called G1 of the cell cycle, as seen here. G1 is followed by replication of the DNA, during the S phase. The S phase or synthesis phase, is period during which a cell replicates its DNA. Growth continues throughout G2 and then finally mitosis occurs. All of this requires energy. All BUT ONE is a step in supplying energy to maintain homeostasis and promote cell division. That is

What is a difference between systemic and pulmonary circulation? a. systemic circulation carries oxygenated blood to the lungs and pulmonary circulation carries deoxygenated blood to the body. b. systemic circulation carries deoxygenated blood to the lungs and pulmonary circulation carries oxygenated blood to the body. c. systemic circulation carries deoxygenated blood to the body and pulmonary circulation carries oxygenated blood to the lungs. d. systemic circulation carries oxygenated blood to the body and pulmonary circulation carries deoxygenated blood to the lungs.