A researcher is setting up an experiment to measure basal metabolic rate in prairie voles (Microtus ochrogaster–a small rodent)
Which of the following would be the best set of conditions for the voles immediately before and during the measurement? A) House the animals in a cage with plenty of food and water to avoid stress; conduct measurements in a warmer room than the room where housed.
B) House the animals in a cage with plenty of food and water to avoid stress; conduct measurements in a room the same temperature as the room where housed.
C) House the animals in a cage with no food for a few hours before measurement; conduct measurements in a colder room than the room where housed, and exercise the voles.
D) House the animals in a cage with no food for a few hours before measurement; conduct measurements in a room the same temperature as the room where housed.
D
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Which of the following is an example of a prosthetic group?
A) a zinc ion B) a glycine residue C) a polypeptide chain D) a nickel catalyst E) carboxypeptidase A
In the international division of labor, one reason for China's role as a major producer of everything from shoes to toys is the endless supply of people who will work for ________ an hour
A) nothing B) 6 cents C) 60 cents D) 6 dollars E) 60 dollars
Light enters the eye’s interior through the
__________, an adjustable opening in the center of the muscular, doughnut-shaped iris. Fill in the blank(s) with the appropriate word(s).
The ________ generation of a plant is haploid
Fill in the blank(s) with correct word