Which of the following is not used in a routine bacteriology laboratory identification
A) Serological testing
B) Morphology determination
C) Nucleic acid-base composition
D) Biochemical testing
Ans: C) Nucleic acid-base composition
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Which of the following is the best evidence that supercoiling is an intrinsic property of double-stranded DNA molecules?
A. Strand separation during transcription and replication introduces supercoiling. B. Purified plasmid DNAs are supercoiled even though all proteins are removed. C. When two strands of an entwined rubber band are pulled apart they will twist into supercoils. D. Linear fragments of double-stranded DNA are not supercoiled. E. None of these choices is correct.
Which of the following are symptoms of the inflammatory response?
a. pain b. swelling c. tenderness and swelling d. pain and heat e. pain, swelling, tenderness and heat
During muscular contraction, cross-bridges form between ________ and ________ .
A. myosin; tropomyosin B. troponin; calmodulin C. myosin; troponin D. actin; myosin E. actin; tropomyosin
What is the role of the apical complex in apicomplexans?
A. The apical complex enables the apicomplexan to penetrate and bore into a host cell. B. The apical complex is a defensive structure that is used to destroy bacteria. C. The apical complex is a motility structure that enables cell movement. D. The apical complex is a feeding structure through which small food particles are taken in.