Laboratory Techniques in Microbiology
Biology ⇒ Microorganisms and Microbiology
Laboratory Techniques in Microbiology starts at 9 and continues till grade 12.
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See sample questions for grade 10
A student is asked to prepare a serial dilution of a bacterial culture. What is the main purpose of this technique?
A student observes cloudy growth in a nutrient broth after incubation. What does this indicate about the sample?
Describe the difference between sterilization and disinfection.
Describe the purpose of using a control sample in a microbiology experiment.
Describe the purpose of using a water bath in microbiology laboratories.
Explain why it is important to flame the neck of a test tube before and after removing a sample.
A student is asked to prepare a serial dilution of a bacterial culture. What is the main purpose of this technique?
A student observes cloudy growth in a nutrient broth after incubation. What does this indicate about the sample?
Which of the following best describes the term 'colony' in microbiology?
(1) A group of different microorganisms growing together
(2) A visible mass of cells derived from a single microorganism
(3) A type of culture medium
(4) A laboratory technique
Which of the following is a common indicator of microbial growth in a liquid culture medium?
(1) Change in color
(2) Formation of a pellet
(3) Turbidity
(4) All of the above
Which of the following is a differential staining technique?
(1) Simple stain
(2) Gram stain
(3) Negative stain
(4) Wet mount
Which of the following is a safety rule in microbiology laboratories?
(1) Eating and drinking are allowed
(2) Always wear a lab coat
(3) Use broken glassware
(4) Touch cultures with bare hands
Fill in the blank: The ________ is used to incubate cultures at a constant temperature.
Fill in the blank: The ________ method is commonly used to estimate the number of bacteria in a sample by counting colonies.
Fill in the blank: The ________ method is used to test the effectiveness of antibiotics against bacteria.
Fill in the blank: The ________ objective lens on a microscope provides the highest magnification.
True or False: Agar is a solidifying agent commonly used in culture media.
True or False: An autoclave uses dry heat to sterilize laboratory materials.
True or False: Disinfectants are used to sterilize surgical instruments.
True or False: Streak plate method is used to isolate pure colonies of bacteria.
