Which of the following is (are) a sterilizing gas(es) that can be used on heat-sensitive materials?
A. Glutaraldehyde
B. Ethylene oxide
C. Chlorine gas
D. Isopropanol
Answer: B
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The determination of carbohydrate utilization patterns for the differentiation of Neisseria spp. and M. catarrhalis is best performed by:
a. incubation of inoculated cysteine trypti-case soy agar (CTA) with 1% dextrose, maltose, lactose, and sucrose for 48 to 72 hours. b. oxidative-fermentative (OF) medium with dextrose, maltose, lactose, and sucrose. c. heavy inoculation of buffered, low-peptone substrate with dextrose, maltose, lactose, and sucrose. d. carbohydrate testing strips.
Which mineral found in horsetails helps protect it from insects?
a. siderite b. aluminum c. silica d. feldspar e. amethyst
Most protists are ____, with each cell forming a complete organism capable of performing all the functions
characteristic of life. a. parasitic b. colonial c. unicellular d. autotrophic e. multicellular
Which subphylum includes shrimp, lobsters, and crabs?
a. Trilobita b. Crustacea c. Hexapoda d. Chelicerata