A snake with stripes would be more likely to survive by fleeing predators in a straight line.
a. true
b. false
Answer: a. true
(The relative fitness, estimated by survival, was greater for striped snakes that moved straight.)
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Cilia are part of the protective barrier located in the:
A. respiratory tract. B. skin. C. stomach. D. genitourinary tract.
“Z” stands for blood type
a. A. b. B. c. AB. d. O. e. any of these.
During fermentation, ________ compounds both donate and accept electrons, with no need for external electron acceptors, but during respiration, ________ electron donors are oxidized with exogenous compounds serving as electron acceptors
a. inorganic / organic b. organic / inorganic c. organic / inorganic or organic d. inorganic or organic / organic
The two types of structural symmetry in viruses are rod-shaped ________ and ________ (spherical) symmetry
a. bacillus / coccus b. coccus / bacillus c. helical / icosahedral d. icosahedral / helical