A positive pyrrolidonyl arylamidase (PYR) test was observed on a species of Enterococcus. What color should be observed for this reaction?
a. Purple
b. Red
c. Green
d. Pink
B
A positive PYR test produces a red color. Enterococcus spp. are PYR positive; therefore, a red color would result.
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The tRNA shown in the figure above has its end projecting beyond its end. What will occur at this end?
A) The codon and anticodon complement one another. B) The amino acid binds covalently. C) The excess nucleotides (ACCA) will be cleaved off at the ribosome. D) The small and large subunits of the ribosome will attach to it. E) The cap of the mRNA will become covalently bound.
An allele that completely masks the effect of another allele is considered
A) codominant. B) dominant. C) ineffective. D) recessive.
Air in the airways that does not participate in gas exchange is known as
A) expiratory reserve volume. B) tidal volume. C) inspiratory reserve volume. D) dead space volume. E) vital capacity.
Arthroscopic surgery is used to repair damage to the knee. What sorts of things can go wrong that can lead to damage in someone's knee?
What will be an ideal response?