LAB 2 - MICROBIOLOGY
Quiz by Andre McBean
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31 questions
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- Q1Which of the following is an example of aseptic technique in microbiology?Using an open flame near bacterial culturesFlaming the inoculating loopNot wearing gloves while handling samplesUsing a dirty petri dish30s
- Q2What is the primary objective of aseptic technique in microbiology?To increase the risk of contaminationTo sterilize all equipmentTo promote the growth of microorganismsTo prevent the introduction of foreign contaminants30s
- Q3What is plate streaking in microbiology?A method used to measure bacterial growth in a liquid culture.A method used to isolate and differentiate bacterial colonies on an agar plate.A method used to count bacterial colonies on an agar plate.A method used to identify the species of bacteria in a sample.30s
- Q4What is the purpose of a streak plate method?To measure the rate of microbial growth in a liquid culture.To count the total number of microorganisms in a sample.To obtain isolated colonies of microorganisms.To identify the specific species of microorganisms in a sample.30s
- Q5What is the primary source of agar agar?MushroomCactusFruitSeaweed30s
- Q6Who was the first person to use agar to isolate bacteria?Richard Julius PetriRobert KochAlexander FlemingLouis Pasteur30s
- Q7What is the correct order of steps for streaking a plate?Innoculating loop, streaking, incubationInnoculating loop, incubation, streakingIncubation, innoculating loop, streakingStreaking, innoculating loop, incubation30s
- Q8What is the form of a colony, the elevation, the margin and the pigment called?Colony organizationColony structureColony appearanceColony morphology30s
- Q9Which of the following is not one of the four forms of a bacterial colony?IrregularRhomboidFilamentousCircular30s
- Q10Which of the following is not a bacterial cell shape?Rod-shapedSpiralCocciCuboidal30s
- Q11What is the purpose of a scanning immersion lens?To improve the resolution of images in microscopy.To change the color of the transmitted light.To protect the microscope from water damage.To magnify objects in the field of view.To reduce the glare in the microscope.30s
- Q12What is the purpose of an immersion oil in scanning microscopy?To enhance the color contrast of the specimen.To increase the magnification of the lens.To protect the lens from physical damage.To reduce the depth of field in the microscope.To minimize light refraction and improve image clarity.30s
- Q13When determining the type of bacteria, which of the following is a characteristic feature to write down in order to identify the colony from a book bank (glossary) of well-documented colonies:All of the options are true.Shape of each colony (irregular, circular, rhizoid etc)Smoothness of the surface of the colonyOpacity of each colony (see-through)Clustering or spread across plate/growth pattern on plateSize of each colony (Small pin point dots scattered, etc)30s
- Q14Which one of the words cannot be used to describe the colonies circled in red:SmoothWhiteOpaque (see-through)Circular30s
- Q15Which one of the words cannot be used to describe colony number 1:YellowPin pointLargeIrregular shape30s
