Which of the following best describes why ionic molecules dissolve and dissociate in water?
A) Water is a polar, covalently bonded substance.
B) Water is hydrophobic.
C) Water is liquid at room temperature.
D) Water is formed from nonpolar covalent bonds between oxygen and hydrogen.
A) Water is a polar, covalently bonded substance.
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If ACTH secretion was inhibited, then which of the following would result?
A. The adrenal glands would not release cortisol. B. The anterior pituitary gland would not release TSH. C. The thyroid gland would not release thyroid hormone. D. The posterior pituitary gland would not release ADH. E. None of the answer options is correct.
A lacOc mutant would
A) never express lac structural genes. B) constitutively express the lac structural genes. C) not bind to lacI. D) use glucose before using lactose as a carbon and energy source. E) not bind to lacI and never express lac structural genes.
Lysosomal proteins are initially incorporated into _______ vesicles.
a. uncoated b. clathrin-coated c. COPI-coated d. COPII-coated
Which reservoir holds the largest volume of Earth's freshwater?
A. Groundwater B. Rivers C. Lakes D. Atmosphere E. Polar ice