Body cells of human males contain _____
a. one X chromosome
b. two X chromosomes
c. one Y chromosomes
d. two Y chromosomes
e. one X and one Y chromosome
ANSWER: e
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Linnaeus began naming organisms that were alike by using Latin names, he gave each organism two names; for example a wolf is called Canis lupis by scientists. What type of naming system is this and what group does "lupis" designate?
A. Binomial nomenclature; genus. B. Binomial nomenclature; species. C. Zoological nomenclature; genus. D. Zoological nomenclature; species. E. Both binomial and zoological nomenclature; species are correct.
In a reversible chemical reaction at equilibrium, the concentration of X (the reactant) is 0.75 mol/L, and the concentration of Y (the product) is 2.25 mol/L. At 25°C, what would be the Keq?
A) 0.33 B) 3.0 C) 1.69 D) 1.50 E) 37.5
What is the main driving force of surface currents?
a. Coriolis Effect b. Centripetal force c. Trade winds d. Gyres
Oncogenes encode proteins in each of the following categories except
A) growth-factor receptors. B) nonreceptor protein kinases. C) transcription factors. D) cytochrome P450 enzymes. E) growth factors.