"K" is the chemical symbol for
A. phosphorus.
B. potassium.
C. nickel.
D. krypton.
E. copper.
Ans: B. potassium.
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The United States is most likely to have a pyramid-shaped age structure because it has more older individuals than young ones.
a. In West Africa b. In Southeast Asia c. In Western Europe d. In the Middle East
If you, like Mendel, grow plants in the lab, and cross short (tt) pea plants with short pea plants, the offspring will be
A. all tall. B. all short. C. nonexistent. D. a mix of tall and short. E. None of the answer choices is correct.
What is meant by the term cotransformation?
A) An F? cell can become F+ several times in a life cycle. B) Cotransformation occurs when several linked genes are transformed simultaneously. C) Several pieces of DNA can form heteroduplexes in a cell. D) More than one phage infects a bacterial cell. E) A cell can pick up more than one F factor.
What important metabolic intermediate does not cross the inner membrane of the mitochondria?
A. oxygen B. ATP C. pyruvate D. acetyl-CoA