Which of the following specimens should NOT be refrigerated if it cannot be processed immediately?
A. CSF
B. Sputum
C. Wound swab
D. Urine
Ans: A. CSF
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In the eukaryotic DNA sequence below, which type of repeat is highlighted?
A. tandem repeat B. dispersed repeat C. simple sequence repeat D. long terminal repeat E. short terminal repeat
Given the following components of the cardiac conduction cycle, which one of the following best describes the movement of the stimulus that causes a heart contraction? A. atrioventricular bundle B. sinoatrial node C. atria D
atrioventricular node E. Purkinje fibers F. ventricles A) B, C, D, A, E, F B) B, D, A, C, E, F C) D, A, E, F, B, C D) A, D, E, B, C, F E) B, C, D, F, A, E
What is the term given to a random subset of individuals who are selected for measurement in a particular study?
A) controls B) sample C) placebos D) representatives
How is alcohol classified?
A. stimulant B. psychoactive C. inhibitor D. depressant E. none of these