Oil spilled into the ocean does not easily disperse, but rather clumps into an oil slick. Which of the following explains why this occurs?
A. Oil is composed mainly of hydrophilic molecules.
B. Oil is composed mainly of nonpolar molecules.
C. Oil has no hydrogen in its molecular structure, so it can't form hydrogen bonds with water.
D. Water is hydrophobic.
E. Electrons are shared unequally between carbon and hydrogen atoms.
B
You might also like to view...
Which condition listed gives rise to individuals that are
somewhat mentally disadvantaged, sterile males with undeveloped testes, scant body hair, and enlarged breasts? a) Emesis gravidarum b) Deformation c) Turner's syndrome d) Breech presentation e) Klinefelter's syndrome
Transmission of sound through the middle ear results in
a. amplification of the pressure vibrations. b. stimulation of middle ear receptor cells. c. opening of the Eustachian tube. d. increased firing rate in sensory axons associated with the tympanic membrane. e. none of these answers.
NAD is derived from the vitamin ________.
A. B-2, riboflavin B. B-6, pyridoxine C. B-3, niacin D. B-12, cobalamin
Distinguish between phonation and articulation
A) Articulation is the movement of the vocal folds to produce sound; phonation is the modification of sound by the tongue, teeth, and lips. B) Phonation is the movement of the vocal folds to produce sound; articulation is the modification of sound by the tongue, teeth, and lips. C) Phonation is central nervous system control over the production of sound. Articulation is the movement of the vocal folds to produce sound. D) Articulation is the central nervous system control over the production sound. Phonation is the movement of the vocal folds to produce sound. E) Phonation is the response of the auditory association area to the hearing of sound. Articulation is the movement of the vocal folds to produce sound.