Each chromosome has one or more ________ site(s) where replication begins.
A. bifurcate
B. promoter
C. replicon
D. origin
Answer: D
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Which is the correct arrangement of cytoskeletal components, sorted by increasing width?
a. cilia, microfilament, microtubule, intermediate filament b. microfilament, cilia, intermediate filament, microtubule c. microfilament, intermediate filament, microtubule, cilia d. microtubule, cilia, intermediate filament, microfilament
The end product of glycolysis is
a. acetyl-CoA. b. oxaloacetate. c. pyruvate. d. citrate. e. acetyl-CoA and oxaloacetate
Based on the fact that CO2 limits photosynthesis in some current environments, what might you conclude about the evolution of photosynthesis?
A. Photosynthesis evolved when environmental concentrations of CO2 were high. B. CO2 levels likely did not have a bearing on the evolution of photosynthesis. C. Photosynthesis evolved in a greenhouse. D. Photosynthesis evolved when environmental concentrations of CO2 were low.
If your appendix bursts, it may lead to a life-threatening condition called
A. peritonitis. B. rickets. C. diverticulitis. D. osteoporosis. E. cirrhosis.