The letter “B” in the above figure represents
a. nerve cords.
b. ganglion.
c. brain.
d. branching nerves.
e. none of these.
Answer: d
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Transcription in prokaryotes is carried out by ______, which unwind(s) and transcribe(s) the gene.
A. RNA synthetase B. RNA polymerase II C. RNA polymerase III D. transcription factors E. RNA polymerase
Mitochondrial DNA is/are
A) similar to nuclear DNA sequences. B) used to trace dispersal of modern humans. C) information storage for enzymes associated with photorespiration. D) associated with paternal inheritance patterns. E) all of the above
Which aquatic zone will provide a habitat for invertebrates and many small fish?
A. limnetic zone B. littoral zone C. epipelagic zone D. profundal zone
The threshold of human skin temperature at which cool or cold is perceived as pain is
A) 0°F. B) 59°F. C) -5°F. D) 32°F.