Water is ______, therefore _____ substances dissolve in it.

a. polar, nonpolar
b. polar, polar
c. nonpolar, polar
d. nonpolar, nonpolar


Answer: b. polar, polar

Biology & Microbiology

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Blood returning to the mammalian heart in a pulmonary vein will drain first into the

A. vena cava. B. left atrium. C. right atrium. D. left ventricle. E. right ventricle.

Biology & Microbiology

Answer the question using the accompanying figure. The worker bees represented by letters C and F, which receive

different alleles from the queen, are related to each other by ____.

a. 0% b. 25% c. 50% d. 75% e. 100%

Biology & Microbiology

In capillary exchange, ___ diffuses into the

interstitial fluid, ___ diffuses into the capillaries, and ___ stays in the capillaries.

a. oxygen; carbon dioxide; plasma proteins b. carbon dioxide; oxygen; plasma proteins c. plasma proteins; oxygen; carbon dioxide d. carbon dioxide; plasma proteins; oxygen e. oxygen; plasma proteins; carbon dioxide

Biology & Microbiology

Flowers bear seeds that develop from ovules housed in protective chambers called

A) stamens. B) sepals. C) ovaries. D) pistils.

Biology & Microbiology