Which one of the following is a defining characteristic of animals but not of plants?
A) Autotrophic
B) Heterotrophic
C) Eukaryotic
D) Prokaryotic
B
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Instantaneous speciation (select all correct choices)
A. is, by definition, a type of sympatric speciation. B. is typically caused when hybridization between species produces fertile, viable offspring that are reproductively isolated from both parental species. C. often involves the multiplication of chromosome sets, or polyploidy. D. is relatively common in plants but not in animals. E. none of these
Metabolic pathways
a. are always catabolic. b. are always anabolic. c. can be either catabolic or anabolic. d. are irreversible. e. proceed until they reach equilibrium.
The maximum concentration of antibody from the
secondary immune response occurs between weeks a. 2 and 3. b. 3 and 4. c. 4 and 5. d. 6 and 7. e. 9 and 10.
An organism that is eukaryotic is by definition:a
is a protist b. is unicellular c. possesses a nucleus d. possesses organ systems e. belongs to domain Bacteria