Cholesterol functions in the plasma membrane to
A. serve as an energy molecule.
B. maintain fluidity.
C. maintain hypertension.
D. mediate steroid action.
E. transport ions.
Answer: B
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Which of the following is a common way in which both phosphorus and sulfur are deposited on land?
a. rock weathering b. condensation c. sublimation d. photosynthesis
The following statements are all true about
energy except one. Choose the exception.
a. Energy is captured by heterotrophs. b. Energy is not recycled. c. Energy is the ability to do work. d. Energy has a tendency to disperse. e. Energy can be transferred from one form to another.
In the general population, 1 in 300 individuals is a carrier for Tay-Sachs disease, while 1 in 30 individuals of Ashkenazi Jew descent are carriers
Tay-Sachs also affects 1 in 30 individuals with French-Canadian ancestry, although two completely unique mutations are responsible for the Ashkenazi and French-Canadian mutations. What are the chances of two individuals who are carriers having a child with Tay-Sachs if a. both individuals are not of Ashkenazi or French-Canadian descent? b. one individual is of Ashkenazi descent and one is not? c. both individuals are of Ashkenazi descent?
Which of the following is least likely to result in a release of epinephrine (adrenaline) from the adrenal glands?
A. Competing in an athletic event B. going out on a first date C. Falling asleep during a lecture D. Swimming in a very cold pool E. taking a test while unprepared