Buffalo, New York, experiences a "lake effect" when wind blowing across the warm water accumulates water vapor that condenses when reaching cooler land. Boston's climate is moderated by the warmer ocean water that lies to the east
Assuming similar winter temperatures, how much snowfall accumulation would be expected in Boston compared to Buffalo? A) less snow in Boston
B) more snow in Boston
C) about the same in both cities
D) It is impossible to predict.
A
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The decline of MPF activity at the end of mitosis is due to _____
A) the destruction of the protein kinase Cdk B) decreased synthesis of Cdk C) the degradation of cyclin D) the accumulation of cyclin E) synthesis of DNA
According to the endosymbiosis hypothesis ________.
A. the mitochondrion evolved from the same endosymbiont as the hydrogenosome B. the first endosymbiont was a fermentative organism C. the first endosymbiotic event involved an anaerobic bacterium D. All of the choices are correct.
Which of the following describes the effector response of sweat glands and blood vessels?
a. sweat glands release sweat and blood vessels dilate b. sweat glands stop releasing sweat and blood vessels dilate c. sweat glands release sweat and blood vessels constrict d. sweat glands stop releasing sweat and blood vessels constrict
Which of the following statements most accurately describes the expression of the repressor protein of the tryptophan operon?
a. The gene for the tryptophan repressor is turned on in response to high levels of tryptophan in the cell. b. The gene for the tryptophan repressor is turned off in response to high levels of tryptophan in the cell. c. The gene for the tryptophan repressor is turned on in response to low levels of tryptophan in the cell. d. The gene for the tryptophan repressor is turned off in response to low levels of tryptophan in the cell. e. The gene for the tryptophan repressor is expressed constitutively.