Which of these events occurs normally in swallowing?
A) The larynx rises. B) The epiglottis rises.
C) The esophagus closes. D) The bolus rises.
Answer: A
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Which of the following is most true of a viral DNA genome?
A. It is usually composed of unusual bases unique to viruses. B. It uses the same four nitrogenous bases found in prokaryotic and eukaryotic DNA. C. It may have the normal bases found in prokaryotic and eukaryotic DNA, or it may have one or more unusual bases. D. Viruses do not use DNA for their genome.
What is a trace fossil?
A. a small fossil B. fossil evidence of organisms other than conventional fossils of hard body parts C. a fossil which is part of a series of fossils that trace the evolution of a group of species D. a fossil that allows scientists to trace the movement of the fossilized organism
Which of the following does (do) not occur in anaerobes?
A) anabolic reactions B) catabolic reactions C) electron transport chain D) fermentation reactions
The intercalating agent ________ allows researchers to visualize DNA and RNA on a gel when the gel is exposed to UV light
Fill in the blank(s) with correct word