The Irish "elk" described by Georges Cuvier suggests that _____
A) organisms could not have originated by special creation
B) organisms could go extinct
C) the great flood or some other catastrophe caused the evolution of new species
D) the Earth is old enough for evolution to have occurred
Answer: B
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Which of the following is not true of the transcription-activation domains of transcriptional activators?
A. Many are composed of acidic, proline-rich, or glutamine-rich regions. B. They are thought to be relatively unstructured. C. These domains are likely to interact with DNA. D. These domains interact with other proteins.
Radiometric dating works best with ____
a. sedimentary rocks b. limestone c. metamorphic rock d. volcanic rocks e. meteorites
Hoverflies are attracted to sweets at outdoor picnics. The reaction of humans is usually to flee because of the flies' uncanny resemblance to bees. The survival of hoverflies is enhanced by:
a. mimicry b. camouflage c. warning coloration d. chemical defenses e. display behavior
Which of the following is NOT characteristic
of cancer tissue?
a. retention of adhesion proteins b. increased vascular flow c. malformed cytoskeleton d. abnormal chromosome number e. all of these are characteristic of cancer tissue