Bacteriology Lab Culture Media Quiz
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Which of the following is a characteristic of semi-solid media?
A. Contains 1.5% to 2% agar
B. Lacks agar and remains in liquid form
C. Contains lower agar concentrations (0.3% to 0.5%)
D. Composed of precisely known amounts of pure chemicals
Which of the following is a control organism for Blood Agar?
A. Staphylococcus aureus
B. Escherichia coli
C. Pseudomonas aeruginosa
D. Streptococcus pyogenes
What type of media is used for motility testing?
A. Chocolate Agar
B. Blood Agar
C. Motility Test Medium
D. Nutrient Agar
What is the purpose of differential media?
A. To differentiate organisms based on biochemical characteristics
B. To support growth of non-fastidious organisms
C. To maintain viability during transport
D. To enhance growth of specific organisms
What is the purpose of enrichment media?
A. To support a wide range of organisms
B. To enhance growth of specific organisms by suppressing competing flora
C. To differentiate organisms based on biochemical characteristics
D. To maintain viability during transport
Which media is used to test the effectiveness of antibiotics?
A. Mueller-Hinton Agar
B. Nutrient Broth
C. Tryptic Soy Broth
D. Brain Heart Infusion Broth
What is the purpose of selective media?
A. Supports a wide range of organisms
B. Inhibits certain organisms to allow specific growth
C. Enhances growth of specific organisms
D. Exhibits visible changes in response to biochemical reactions
What is the main component of Nutrient Agar?
A. Peptone
B. Lactose
C. Cetrimide
D. Mannitol
Which media is selective for gram-negative bacteria?
A. Chocolate Agar
B. MacConkey Agar
C. Blood Agar
D. Mannitol Salt Agar
Which of the following is an example of enriched media?
A. Nutrient Agar
B. Blood Agar
C. Mannitol Salt Agar
D. MacConkey Agar
Which of the following is an example of liquid (broth) media?
A. Nutrient Broth
B. MacConkey Agar
C. Blood Agar
D. Nutrient Agar
What is the optimal pH adjustment for bacterial growth?
A. Basic pH of 9
B. Neutral pH of 7
C. Acidic pH of 5
D. Optimal levels specific to the organism
What is the main purpose of transport media?
A. To isolate enteric pathogens
B. To maintain viability of organisms during transport
C. To differentiate organisms based on biochemical characteristics
D. To support fastidious organisms
What is the primary purpose of solid media in bacteriology?
A. Isolating bacteria as discrete colonies
B. Testing the effectiveness of antibiotics
C. Maintaining viability during transport
D. Propagation of large numbers of organisms
Which media type is composed of precisely known amounts of pure chemicals?
A. Differential Media
B. Selective Media
C. Defined Media
D. Complex Media
