How many molecules of CO2 are needed to generate one molecule of glucose?
A. 6
B. 3
C. 4
D. 5
E. 2
Answer: A
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The primary nitrogenous waste excreted by birds is _____
A) ammonia B) nitrate C) nitrite D) urea E) uric acid
The selection and differentiation of B cells during clonal selection is an example of:
A. mitosis. B. meiosis. C. binary fission. D. cytokinesis.
You are eating in a French restaurant and read that snails are on the menu. Being a knowledgeable biologist, you kindly inform the other members at the table that this restaurant is serving the ___________ class of mollusks.
a. Cephalopoda b. Polyplacophora c. Gastropod d. Monoplacophoran e. Bivalvia
Suppose you know the determining function for what drives restaurant sales is of the following form WeeklySalesi = ?0 + ?1WeeklyPromoSpendi + ?2HolidayWeeki + Ui. Suppose further that your client told you that she is spending $1,000 per week on weekly promotions, except during the summer where she doubles it. Which statement best describes the role of "summer weeks" in estimating the causal effect of weekly promotion spent using the determining function above?
A. If summer weeks are contained in Ui (i.e., they affect Sales), then there is an endogeneity problem. B. Because weekly promotions are unrelated to whether or not it's a holiday week, there is no endogeneity problem. C. If summer weeks leads to more promotion and doesn't affect sales, then there is an endogeneity problem. D. There is no potential endogeneity problem with the determining function above.