In temperate-zone lakes, ____________________ and fall overturns cause vertical mixing of waters and trigger a
burst of productivity. Fill in the blank(s) with the appropriate word(s).
ANSWER: spring
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When reporting a direct smear from a primary specimen, it is important to note all of the following except:
a. white blood cells. b. squamous epithelial cells. c. artifacts. d. prominent cell shapes and arrangements.
The pathway of metabolism that involves a series of electron transfers from reduced carrier molecules such as NADH2 and NADPH2 to a terminal electron acceptor is:
a. substrate-level phosphorylation. b. fermentative metabolism. c. oxidative phosphorylation. d. aerobic respiration.
The cell walls of most fungi are composed of
A. chitin. B. cellulose. C. dentine. D. peptides. E. glycerol.
Which of the following is a property of liquid water? Liquid water _____
A) is less dense than ice B) has a specific heat that is lower than that for most other substances C) has a heat of vaporization that is higher than that for most other substances D) is nonpolar