Systolic pressure reflects the
A. contraction of the atria.
B. relaxation of the atria.
C. contraction of the ventricles.
D. relaxation of the ventricles.
E. heart rate.
C. contraction of the ventricles.
You might also like to view...
A common structure for proteins that bind DNA is helix-turn-helix
Indicate whether the statement is true or false.
Which type of medium typically contains an indicator dye?
A) selective but not differential B) differential but not selective C) both selective and differential D) neither selective nor differential
In the Krebs cycle, the pieces of the starting glucose molecule (now pyruvate) are completely broken apart to produce carbon dioxide. What happened to all the energy that was contained in the bonds of the original glucose molecule?
a) It was used to turn oxygen gas into water. b) It was all used in the Krebs cycle to make ATP. c) It was lost as heat. d) It is still in the bonds of pyruvate. e) It was transferred into NADH and FADH2 and some ATP.
An agent that reproduces in cells but is NOT composed of cells and contains RNA as its genetic material is a(n)
a. Alga. b. Bacterium. c. Fungus. d. Helminth. e. Virus.