The process of speciation always includes ____ isolation
a. behavioral
b. temporal
c. reproductive
d. ecological
e. geographic
ANSWER: c
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A patient has an infection caused by S. moniliformis. Which of the following is the preferred antibiotic choice?
a. Penicillin b. Tetracycline c. Streptomycin d. All of the above
Before leaving on a trip, you give your favorite houseplant a little extra water and a pinch of plant food. Your trip ends up lasting a few days longer than you originally planned, and when you return, you discover that your plant has wilted dramatically. What happened?
a. The extra water caused its cells to swell, bursting its plasma membranes. b. Overwatering your plant deprived it of the electrolytes that plants crave. c. Your plant dried out before you returned, and it suffered from plasmolysis. d. The plant food inverted the concentration gradient in the plant, dehydrating it.
Primitive reptiles first appeared during the _____ period.
A. Carboniferous B. Cambrian C. Devonian D. Ordovician E. Silurian
A fish detects vibrations in the water by means of its ________, which contains numerous ________.
A. lateral line; thermoreceptors B. ear; statocysts C. skin; mechanoreceptors D. lateral line; hair cells E. swim bladder; stretch receptors