Which substance would have the most difficulty entering a water lattice?

a. table salt (NaCl)
b. a nonpolar molecule
c. a sodium ion
d. a proton (H+)
e. an electron


ANSWER: b

Biology & Microbiology

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Which structure-function pair is mismatched?

A) nucleolus â€" production of ribosomal subunits B) lysosome â€" intracellular digestion C) ribosome â€" protein synthesis D) Golgi â€" protein trafficking E) microtubule â€" muscle contraction

Biology & Microbiology

How does peer review influence the development of scientific theories?

A. Peer review allows other scientists to know what is current in their field. B. Careful evaluation of research results by other scientists ensures that only solid and legitimate research results are published, and helps prevent faulty research or false claims from being viewed as scientific fact. C. Peer review increases competition among scientists and thus increases the quality of the published work. D. Peer review makes it extremely difficult for work to be published other than earth-shattering scientific theories.

Biology & Microbiology

Which of the following is an egg-laying mammalian group?

a. monotremes b. eutherians c. polytherians d. metatherians e. marsupiums

Biology & Microbiology

In order to fit the X-ray crystallographic data, the two DNA strands must be ____ to each other

a. complementary b. uncomplementary c. parallel d. antiparallel e. semiconservative

Biology & Microbiology