"N" is the chemical symbol for
A. nickel.
B. neon.
C. nitrogen.
D. magnesium.
E. copper.
Answer: C. nitrogen.
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For biologists studying a large flatworm population in the lab, which Hardy-Weinberg condition is most difficult to meet?
A) no selection B) no genetic drift C) no gene flow D) no mutation E) random mating
Cellular membranes are
A. fluid. B. solely composed of lipids. C. composed of a single layer of amphipathic molecules. D. selective to the transport of gases and small molecules only. E. characteristic of eukaryotes, but not prokaryotes.
Which of the following statements concerning anabolic reactions is FALSE?
a. They are generally endergonic. b. They usually require ATP. c. They are part of metabolism. d. They may produce polysaccharides from monosaccharides. e. They may split complex molecules into their components.
Tundie is an accomplished lab technician. She wants to determine whether her boyfriend is still smoking marijuana, a habit he swore he would give up
She can't test his blood for THC because performing this test might arouse the suspicions of the authorities. Which of the following blood findings might suggest that her boyfriend is still smoking weed? A) substantial nicotine in the blood B) increased blood carbon monoxide C) low blood oxygen D) high blood niacin