A urine Gram stain shows Gram positive cocci in clusters. The organisms tested catalase positive microdase negative. To speciate this organism from culture, the technicial should perform a coagulase test and a/an:
A. Oxidase
B. Novobiocin susceptibility
C. Polymyxin B susceptibility
D. P Disk
Ans: B. Novobiocin susceptibility
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Substitution of one base pair for another in a coding region of a gene can result in a ____ mutation
where the changed codon still codes for the same amino acid that was previously coded for.
a. missense b. chromosomal c. frameshift d. silent e. nonsense
In the reactions of glycolysis, pyruvate oxidation, and the citric acid cycle, chemical energy is transferred to the bonds in:
a. ATP b. All of these choices are correct. c. fats d. electron carriers e. c and d f. a and d
If two parents are carriers of albinism (an autosomal recessive trait), what is the chance that their fourth child will have a homozygous dominant genotype?
A) 75% B) 25% C) 0% D) 50% E) 100%
What would be strong evidence to suggest a protist is phototrophic?
A. Many lysosomes B. Silicon dioxide cell walls C. Locomotion via several flagella D. The presence of chloroplasts E. A benthic lifestyle