Serum is plasma without the proteins involved in clotting. Indicate whether the statement is true or false
True
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Which statement factors into artificial but not natural selection?
A. Most organisms are capable of producing more offspring than typically survive. B. Phenotypic variation of a species has variable appeal to humans interested in that species. C. Phenotypic variation exists within populations. D. Phenotypic variation can influence reproductive success. E. Phenotypic variation within a species is due in part to inherited characteristics.
A college student walks down New York City's Fifth Avenue at 8:00 AM. She is late for class so she catches the bus for the last 2 miles of her commute. Did she have a larger ecological footprint when she was walking or when she was on the bus?
A. on the bus, because it is using energy to move B. on the bus, because the road took more energy to build than the sidewalk C. walking, because she is using energy that must be replaced by eating foods that are not locally grown D. walking, because she is moving on a sidewalk that took energy and raw materials to build E. More information is needed about, for example, the number of people on the bus and its fuel source, to accurately determine her ecological footprint in both situations.
Answer the following statements true (T) or false (F)
1. Poor-quality clinical specimens are unlikely to produce clinically relevant results. 2. The Director of the Clinical Microbiology Laboratory (CML) is ultimately responsible for the quality of clinical specimens submitted to the CML. 3. Special disinfection procedures are required to prevent indigenous microflora of the skin from contaminating blood cultures. 4. Bacteriuria is a sure sign of urinary tract infection. 5. CSF specimens are treated as “stat” specimens in the Clinical Microbiology Laboratory.
The primary plating medium used to select out Clostridia spp. would be:
a. anaerobic blood agar. b. laked kanamycin-vancomycin (LKV) blood agar. c. phenylethyl alcohol agar (PEA). d. thioglycollate.