Microscopy in Microbiology
Biology ⇒ Microorganisms and Microbiology
Microscopy in Microbiology starts at 8 and continues till grade 12.
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See sample questions for grade 9
Describe one reason why proper handling of a microscope is important.
Describe one safety precaution to follow when using a microscope.
Describe the main difference between a scanning electron microscope (SEM) and a transmission electron microscope (TEM).
Explain the difference between magnification and resolution in microscopy.
Explain why it is important to start focusing with the lowest power objective lens.
Explain why oil immersion is used with the 100x objective lens in light microscopy.
A student is using a microscope with a 15x eyepiece and a 10x objective lens. What is the total magnification?
A student observes a bacterial cell under a microscope using a 10x eyepiece and a 40x objective lens. What is the total magnification?
Which of the following best describes the function of the condenser in a microscope?
(1) Magnifies the image
(2) Focuses light onto the specimen
(3) Moves the stage
(4) Changes the objective lens
Which of the following is a limitation of light microscopes?
(1) Cannot view living cells
(2) Low magnification compared to electron microscopes
(3) Expensive to operate
(4) Require a vacuum
Which of the following is NOT a function of the objective lenses?
(1) Magnifying the specimen
(2) Illuminating the specimen
(3) Providing different levels of magnification
(4) Focusing the image
Which of the following is NOT a reason to use a cover slip when preparing a slide?
(1) To protect the specimen
(2) To keep the specimen flat
(3) To prevent the lens from touching the specimen
(4) To increase magnification
Fill in the blank: The _______ focus knob is used for precise focusing after the specimen is located.
Fill in the blank: The _______ is the flat platform where the slide is placed for observation.
Fill in the blank: The _______ is the light source located at the base of most microscopes.
Fill in the blank: The _______ lens is also known as the eyepiece.
True or False: A dissecting microscope is best for viewing very small bacteria.
True or False: Phase-contrast microscopes are useful for viewing unstained, living cells.
True or False: The arm of the microscope is used to carry the microscope safely.
True or False: The base of the microscope provides stability and support.
