Which of the following is a normal inhabitant of a cow's digestive tract that can cause harm to people when it contaminates ground beef?
A) Escherichia coli
B) Yersinia pestis
C) Streptococcus pneumoniae
D) Borrelia burgdorferi
E) Clostridium tetani
A
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The biochemical description of B. bronchiseptica is:
a. oxidase positive, motile, and rapid urease positive. b. indole positive, nonmotile, and has a fruity odor. c. resistant to vancomycin and will grow on MacConkey agar at 42°C. d. nonmotile and both urea positive and phenylalanine deaminase positive.
Which two atoms are found in all organic compounds?
a. carbon and hydrogen b. carbon and oxygen c. oxygen and hydrogen d. carbon and phosphorous e. oxygen and sulfur
Which fungal group includes organisms used for the manufacture of anesthetics, birth control agents, industrial alcohols, meat tenderizers, and yellow food coloring?
A. Zygomycetes B. Ascomycetes C. Basidiomycetes D. Microsporidia E. Glomerulomycetes
Which of the following cells is living but their nuclei are lost during maturation?
A. guard cells B. companion cells C. meristem cells D. collenchyma E. sieve cells