Amphibians are not completely free to live on dry land because
A. their ancestors were fish.
B. their food organisms live in water.
C. their reproduction depends on water.
D. they can escape from predators by jumping into the water.
E. they obtain oxygen from water through gills.
C. their reproduction depends on water.
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In the blood, most CO2 is transported ________.
A. as dissolved CO2 B. as bicarbonate C. bound to RBCs D. bound to hemoglobin
Attached earlobes are recessive to free earlobes. What genotypic ratio is expected when an individual with attached earlobes mates with an individual heterozygous for free earlobes?
A) 2:1 B) 1:1 C) 1:2:1 D) 3:1
Which type of transcription are the proteins called transcription factors involved in?
a. elongation b. initiation c. termination d. stabilization
Suppose you estimate the following regression of a Movie's ticket sales and the season of year (Summer =1 if in May, June, July, August, =0 otherwise) that movie's initial release was in: Sales = 295,342 + 40.24 Summer. You are willing to believe you have a random sample of store locations, and a sufficiently large sample size. Which statements are well justified by the regression results?
A. Moving the scheduled release of a movie from the winter to the summer will increase its sales by 40.24. B. Movies released in the summer tend to have higher ticket sales. C. Moving the Jurassic World release date to Christmas instead of 4th of July weekend, would have resulted in ticket sales of 295,342. D. Promotional activities increase the number of movie tickets sold holding other factors fixed.