In which group are retention of larval characteristics
and sexual maturity seen in the same body?
a. toads
b. salamanders
c. frogs
d. caecilians
e. none of these
Answer: b
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The molecule shown above is ____, having ____
a. unsaturated; a carbon-carbon double bond b. saturated; a carbon-carbon double bond c. unsaturated; no carbon-carbon double bonds d. saturated; no carbon-carbon double bonds e. saturated; a carbon-carbon triple bond
Which of the following is NOT a symptom of Marfan syndrome?
A. Vision problems B. Blood vessel defects C. Loose joints D. Short stature E. All of these are symptoms of Marfan syndrome
Microfilaments such as actin, microtubules, and the intermediate filaments form the cell-supporting structure called the
A. nucleus. B. cytoplasm. C. plasma membrane. D. cytoskeleton.
What is the name of the enzyme that fits new complementary DNA nucleotides into the new strand?
A. DNA telomerase B. DNA replicase C. DNA polymerase D. DNA ligase E. DNA helicase