How are pyrimidines structurally different from purines in DNA nucleotides?
A. Pyrimidines have a double-ring structure, while purines have a single-ring structure.
B. Pyrimidines and purines both have a double-ring structure.
C. Pyrimidines have a single-ring structure, while purines have a double-ring structure.
D. Pyrimidines and purines both have a single-ring structure.
Select your answer:
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Lipid Metabolism › ViewWhat is the source of NADPH required for fatty acid synthesis?
A. Pentose phosphate pathway
B. Malic enzyme
C. Both
D. None
Heart › View
Which of the following has a strong, positive inotropic effect, meaning it increases the strength of each contraction of the heart?
A. Hypocalcemia
B. Hypercalcemia
C. Hyperkalemia
D. Myocardial hypercapnia
E. Myocardial hypoxia