Cryptococcus neoformans is a ________.
A. gram-positive bacterium
B. prion
C. fungus
D. gram-negative bacterium
Answer: C
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Operons that code for anabolic enzyme systems are typically regulated by inducers
Indicate whether the statement is true or false
When comparing gene regulation in prokaryotes and eukaryotes,
a. both significantly remodel chromatin b. both have transcription and translation in separate cellular compartments c. both produce differentiated cells d. both use transcription control e. both have alternative splicing
Which of the following was demonstrated by the Miller-Urey experiment?
A. Life began on the prebiotic Earth 3.5 billion years ago. B. Life began in the oceans. C. Life can be started experimentally in the laboratory. D. Organic molecules important to life could have been formed from a vast array of simple chemicals.
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.