Hydrogen bonds are the result of attraction between:
a. the H of one water molecule and the H of another water molecule.
b. the two H atoms of the same water molecule.
c. the H and O of the same water molecule.
d. the H of one water molecule and the O of another water molecule.
D
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The onset of AIDS is often accompanied by
A. a steep drop in T cell numbers. B. macrophage infection. C. a positive HIV test. D. lung infections and other opportunistic infections. E. Kaposi's sarcoma.
Consider the work Mendel did with his pea plants. Why is the study of human genetics much more difficult? What will be an ideal response?
Blood moves through the structure indicated by
a. A. b. B. c. C. d. D. e. E.
In a Punnett square, the letters outside the little boxes represent ____
a. offspring genotypes b. parental genotypes c. gametes d. offspring phenotypes e. parental phenotypes