What is the ultimate fate of oxygen gas (O2) in cellular respiration?
a. It is respired as CO2.
b. It is converted to water.
c. It is attached to glucose.
d. It is attached to pyruvate.
e. It accepts electrons in glycolysis.
B
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The mediator protein complex in eukaryotes
A. facilitates interactions between RNA polymerase II and regulatory transcription factors. B. controls the rate at which RNA polymerase translates mRNA. C. completely enfolds RNA polymerase and the general transcription factors. D. is composed of a single protein.
Antigens bind at
a. A. b. B. c. C. d. D. e. E.
In estimating the effect of price on sales (Salesi = ?0 + ?1Pricei + Ui), you are attempting to find an instrumental variable that will solve the endogeneity problem caused by the confounding factor of number of competitors being within Ui, which is correlated with price. Which of the following statements would suggest that wholesale costs would satisfy the exogenous condition to be a potential instrument variable?
A. Wholesale costs are uncorrelated with price. B. Wholesale costs are uncorrelated with number of competitors. C. Wholesale costs are uncorrelated with sales. D. Wholesale costs are correlated with price.
Which of the following is relatively unimportant for the recognition of the promoter by sigma factor?
a. the -35 box b. the length of the region between the -10 element and -35 box c. the -10 element d. the sequence surrounding the startpoint e. the sequence of the region between the -10 element and -35 box