Phosphoenolpyruvate + ADP ? Pyruvate + ATP via the enzyme Pyruvate Kinase. This is an example of ATP production by_______.
a) photophorylation
b) Oxidation phosphorylation
c) substrate-level phosphorylation
d) Oxidative and substrate-level phosphorylation
Answer: c) substrate-level phosphorylation
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Which of the following statements is consistent with the assertion that protists are paraphyletic?
A) Some protists evolved into other eukaryotic groups. B) Protists all share a common set of synapomorphies. C) Protists are all more primitive than land plants and animals. D) Protists do not share a single common ancestor.
The renal vein sends blood back to the heart via which vein?
a. iliac vein b. gastric vein c. inferior vena cava d. superior vena cava
The maintenance of Hardy-Weinberg equilibrium is
predominant a. when sexual selection occurs. b. when mutations occur. c. in small populations. d. when there is no gene flow between different populations. e. when all of these are true.
What building blocks form a DNA molecule?
A) amino acids B) nucleotides C) fatty acid chains D) polysaccharides