Who originally discovered the process of bacterial transformation?
A. Griffith
B. Meselson and Stahl
C. Chargaff
D. Hershey and Chase
E. Watson and Crick
Answer: A
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Possible evolutionary relationships, when determined solely by the study of comparative morphology, may be incorrect due to
a. morphological divergence. b. morphological convergence. c. adaptive radiation. d. extinction. e. homology.
The __________ (nematodes) have an unsegmented body, a cuticle that is molted, a complete gut, and
a false coelom. Fill in the blank(s) with the appropriate word(s).
Fresh water and forests may be tapped indefinitely as long as they're replenished. They are
classified as a. nonrenewable resources. b. renewable resources. c. ecological sources. d. biogeographical resources. e. point sources.
Ecosystems lose energy in the form of ____
a. metabolic heat b. sunlight c. carbon dioxide d. oxygen e. decomposition