Question: EMB agar is a medium used in the identification and isolation of pathogenic bacteria.
Answer Choices:
a selective medium only.
a differential medium only
a selective medium and a chemically defined medium
a selective medium, a differential medium, and a complex medium
Answer: a selective medium, a differential medium, and a complex medium
Question: With respect to the Nomenclature of Symptoms, what is the affix for “inflammation”?
Answer Choices:
pathy
emia
itis
oma
Answer: itis
Question: The biogeochemical cycle of which of the following elements is based on changes in solubility rather than redox chemistry?
Answer Choices:
carbon
sulfur
nitrogen
phosphorus
Answer: phosphorus
Question: Which of the following is typically found as part of the prokaryotic genome?
Answer Choices:
chloroplast DNA
linear chromosomes
plasmids
mitochondrial DNA
Answer: plasmids
Question: To determine the insurance premium of a car, an insurance company considers the following determinants: the age of the car, the model of the car, and the mileage of the car. Which of the following is the dependent variable?
Answer Choices:
Model
Age
Mileage
Insurance premium
Answer: Insurance premium
Question: Which of the following is true of archaea that produce methane?
Answer Choices:
They reduce carbon dioxide in the presence of nitrogen.
They live in the most extreme environments.
They are always anaerobes.
They have been discovered on Mars.
Answer: They are always anaerobes.
Question: The name of the group that includes green algae.
Answer Choices:
Chlorophyta
Charophyta
Rhodophyta
Phaeophyta
Answer: Chlorophyta
Question: When a free-floating microbial cell attaches to a surface, it is called:
Answer Choices:
sessile
planktonic
monolipic
lipic
Answer: sessile
Question: Which of the following is not composed of microtubules?
Answer Choices:
desmosomes
centrioles
eukaryotic flagella
eukaryotic cilia
Answer: desmosomes
Question: Enzymes work by which of the following?
Answer Choices:
increasing the activation energy
reducing the activation energy
making exergonic reactions endergonic
making endergonic reactions exergonic
Answer: reducing the activation energy
Question: A proteinaceous particle that contains no DNA.
Answer Choices:
viroid
virus
prion
virusiod
Answer: prion
Question: A pudding recipe for 50 people calls for 4 cups of sugar. Each bag of sugar contains 6 cups. How many bags of sugar will be needed to make this recipe for 300 people?
Answer Choices:
4 bags
13 bags
24 bags
8 bags
Answer: 4 bags
Question: What is one difference between specimen preparation for a transmission electron microscope (TEM) and preparation for a scanning electron microscope (SEM)?
Answer Choices:
Only the TEM specimen requires sputter coating.
Only the SEM specimen requires sputter-coating.
Only the TEM specimen must be dehydrated.
Only the SEM specimen must be dehydrated.
Answer: Only the SEM specimen requires sputter-coating.
Question: In which phase would you expect to observe the most endospores in a Bacillus cell culture?
Answer Choices:
death phase
lag phase
log phase
log, lag, and death phases would all have roughly the same number of endospores.
Answer: death phase
Question: You encounter a lichen with leafy structures. Which term describes this lichen?
Answer Choices:
crustose
foliose
fruticose
agarose
Answer: foliose
Question: An employee discovers that 0.0025 of all products produced at a factory contain defects. Which of the following percentages does this represent?
Answer Choices:
25%
0.025%
0.25%
2.5%
Answer: 0.25%
Question: Today, carbolic acid is no longer used as a surgical disinfectant because it is a skin irritant, but the chemical compounds found in antiseptic mouthwashes and throat lozenges are called
Answer Choices:
Metals
Phenolics
Alcohols
Halogens
Answer: Phenolics
Question: The hypotenuse (side C) of a triangle is 13 inches long. Which of the following pairs of measurements could be correct for the lengths of the other two sides of the triangle?
Answer Choices:
2.5 inches, 4 inches
2.5 inches, 6 inches
5 inches, 12 inches
5 inches, 8 inches
Answer: 5 inches, 12 inches
Question: The table below shows the miles driven as a function of gallons of gas used. When the function is graphed, what does the ordered pair (6, 144) represent?
Answer Choices:
The driver can go 144 miles with 6 gallons of gas.
The driver can go 24 miles in 1 hour.
The driver can go 144 miles in 6 hours.
The driver can go 6 miles with 144 gallons of gas.
Answer: The driver can go 144 miles with 6 gallons of gas.
Question: Which method involves conversion of a microbe’s lipids to volatile compounds for analysis by gas chromatography?
Answer Choices:
FAME
proteomic analysis
MALDI-TOF
Lancefield group testing
Answer: FAME
Question: A farmer needs to buy fertilizer for his farmland. The instructions on the bag of fertilizer say 49.5 pounds of fertilizer is needed for 1 acre of land. The farmer buys 2,000 pounds of fertilizer. Which of the following is the approximate number of acres he can cover with the fertilizer he bought?
Answer Choices:
125
1,000
40
300
Answer: 40