8.2: Chapter Quiz
- Page ID
- 38919
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- A nutrient material prepared for the growth of microorganisms in a laboratory is called a ______.
- enrichment medium
- culture medium
- selective media
- complex media
- Most investigations of microbes require a pure culture, or clones of bacteria. The isolation method used to achieve pure cultures is the _________.
- selective selection
- streak plate method
- inoculation method
- defined medium method
- The term ______ refer(s) to a large group of Gram-negative, rod-shaped bacteria that share several characteristics. The group includes heat-tolerant bacteria of fecal origin.
- virus
- protozoan
- parasite
- total coliforms
- _______ assume that each bacterium, clump of bacteria, or particle with bacteria attached, will give rise to a single visible colony. Each clump or particle is, therefore, a colony forming unit (cfu) and the results are expressed as colony forming units per unit volume.
- Multiple Fermentation Tube Technique
- Membrane Filter Technique
- Heterotrophic Plate Count
- Sabouraud
- __________ count includes microorganisms that are capable of growing in or on a nutrient-rich solid agar medium.
- Multiple Fermentation Tube Technique
- Membrane Filter Technique
- Heterotrophic Plate Count
- Sabouraud
- More than 95-percent of thermos-tolerant coliforms isolated from water are the gut organism, _______, the presence of which is definitive proof of fecal contamination.
- Streptococcus
- E. coli
- Staphylococcus
- Bacteroides