Which of the following vessels is found in the pulmonary circulation?
A) lung capillaries
B) aorta
C) superior vena cava
D) coronary arteries
Ans: A) lung capillaries
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Which of the following prokaryotic nutritional
groups use organic substances for carbon and photons for energy? a. photoautotrophs b. chemoautotrophs c. photoheterotrophs d. chemoheterotrophs e. none of these
What is the main function of the nucleus?
A) To hold all of the DNA B) To hold all of the RNA C) To produce proteins D) To produce energy
Which of the following sample statistics influences the sign of the slope coefficient in the simple linear regression (of Y on X)?
A. sCov(X,Y)
B. sVar(X)
C. sVar(Y)
D. 
With respect to DNA structure, polarity means that
A) DNA nucleotides can be either positively or negatively charged. B) the phosphate backbone of DNA is negatively charged. C) DNA nucleotides can be charged or uncharged. D) DNA strands have a 5? direction and a 3? direction.