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Questions and Answers
Which type of microscopy is used to observe external features of cells?
What is the resolving power of electron microscopes?
Which type of cells have nucleic acid not bounded by a nuclear membrane?
Where are respiratory enzymes and electron transport chains located in Eukaryotic cells?
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Which type of cells divide by mitosis?
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Which type of cells have 70S ribosomes?
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What is the composition of ribosomes in Eukaryotic cells?
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Which type of cells have a fluid phospholipid bilayer containing sterols in the cytoplasmic membrane?
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Which type of cells have flagella or cilia?
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Which type of cells have no internal organelles?
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Which type of cells have nucleic acid in a nucleus?
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Which type of cells have a nucleus?
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What is the main difference between magnification and resolution in microscopy?
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What is the average wavelength of white light?
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In light microscopy, what is the maximum magnification available?
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What is the resolving power of a light microscope?
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What is the main limitation of a light microscope in terms of distinguishing objects?
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What is the purpose of using disinfectants and antiseptics in microbiology?
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What is the function of an electron microscope in microbiology?
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What is the average wavelength of light used in a light microscope?
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What is the maximum magnification available in an electron microscope?
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What is the resolving power of an electron microscope compared to a light microscope?
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What is the main difficulty in using a light microscope to observe very small objects?
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What is the purpose of sterile growth media in microbiology?
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Study Notes
Microscopy and Cell Structure in Microbiology
- Electron microscopy uses electrons instead of light photons to image cells and cell structures
- Electron microscopes can magnify objects up to 1 million times with a resolving power of 0.2 nm
- Scanning electron microscopy is used to observe external features of cells, while transmission electron microscopy is used to observe internal cell structures
- Light microscopes enable the user to see living cells in action, but new strategies have yielded vast improvements in contrast, fueling a renaissance in light microscopy
- There are three types of microorganisms: Prokaryotic (Bacteria, Archaea), Eukaryotic (Fungi, Protozoa, Algae), and Non-cellular (Viruses, Prions)
- Prokaryotic cells have no nucleus, all have a cell wall, and no cell organelles, while Eukaryotic cells have a nucleus, cell wall (in some), and cell organelles
- Eukaryotic cells have nucleic acid in a nucleus, while Prokaryotic cells have nucleic acid not bounded by a nuclear membrane
- Eukaryotic cells divide by mitosis, while Prokaryotic cells divide by binary fission
- Eukaryotic cells have a fluid phospholipid bilayer containing sterols in the cytoplasmic membrane, while Prokaryotic cells also have a fluid phospholipid bilayer
- Eukaryotic cells have ribosomes composed of a 60S and a 40S subunit forming an 80S ribosome, internal membrane-bound organelles, and chloroplasts, while Prokaryotic cells have 70S ribosomes, no internal organelles, and no chloroplasts
- Eukaryotic cells have respiratory enzymes and electron transport chains located in the mitochondria, while Prokaryotic cells have them located at the cytoplasmic membrane
- Eukaryotic cells may have flagella or cilia, while some Prokaryotic cells have flagella
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Description
Test your knowledge of microscopy and cell structure in microbiology with this quiz! Learn about the different types of microscopes and their functions, as well as the distinguishing features between prokaryotic and eukaryotic cells. From electron microscopy to the characteristics of cellular organelles, this quiz covers a wide range of topics in microbiology.
