Question: In a Colilert technique, the presence of this bacterial enzyme is visualized as blue fluorescence under UV light and indicative of E. coli contamination.
Answer Choices:
Catalase
Galactosidase
Glucuronidase
Oxidase
Answer: Galactosidase
Question: Which of the following is measured to determine the zone of inhibition?
Answer Choices:
Volume
Diameter
Radius
Area
Answer: Diameter
Question: Individual fungal filaments are called hyphae.
Answer Choices:
True
False
Answer: True
Question: If a pregnant woman contracts toxoplasmosis, the fetus may suffer devastating complications including brain damage, liver damage, or stillbirth.
Answer Choices:
True
False
Answer: True
Question: The time interval from parent cell to two new daughter cells is called:
Binary fission
Answer Choices:
Growth curve
Generation time
Death phase
Answer: Generation time
Question: Urea broth is an example of a medium that is:
Answer Choices:
Selective
Differential
Both
Answer: Both
Question: β-Galactosidase is a constitutive enzyme that breaks down lactose.
Answer Choices:
True
False
Answer: True
Question: Euglena is capable of both photosynthesis and heterotrophy, and therefore classified as a mixotroph.
Answer Choices:
True
False
Answer: True
Question: If you perform a Gram stain on a pure culture of bacteria and you observe pink, sausage-shaped cells at 1000X magnification. How would you characterize this particular bacteria?
Answer Choices:
Gram negative spirals
Gram positive rods
Gram positive cocci
Gram negative cocci
Gram negative rods
Answer: Gram negative rods
Question: Which of the following is an environment where an oligotroph might be found?
human large intestine
open ocean
waste water
coastal freshwater
Answer Choices:
human large intestine
open ocean
waste water
coastal freshwater
Answer: open ocean
Question: A phage is a virus that infects:
Bacteria
Archaea
Answer Choices:
Protists
Humans
It is not a virus
Answer: Bacteria