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Questions and Answers
Most bacteria are ______: they maintain a single shape
monomorphic
Some bacteria are ______: they can have many shapes, not just one
pleomorphic
Bacterial cell come in one of the three shapes: ______ (Sphere)
coccus
Bacterial cell come in one of the three shapes: ______ (Rod)
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Bacterial cell come in one of the three shapes: ______ (Spiral)
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What term is used to describe bacteria that can have many shapes, not just one?
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Which term describes the bacteria that maintain a single shape?
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What is the term for the spherical shape of bacterial cells?
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Which term is used to describe the rod-shaped bacterial cells?
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What is the term for the spiral-shaped bacterial cells?
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Most bacteria are pleomorphic, meaning they can have many shapes, not just one.
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Corynebacterium is an example of spiral-shaped bacterial cells.
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Streptococcus is an example of rod-shaped bacterial cells.
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Sarcina is an example of spherical-shaped bacterial cells.
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Bacillus is an example of pleomorphic bacteria.
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Study Notes
Bacterial Morphology
- Bacterial morphology is the study of the size, shape, and arrangement of bacterial cells.
- The unit of measurement used in bacteriology is the micron (micrometer), which is one-thousandth of a millimeter.
- The average size of bacteria ranges from 0.5 to 5 µm.
Limitation of Unaided Eye
- The limit of resolution with the unaided eye is about 100 microns.
- Many bacteria are smaller than this size, making them invisible to the naked eye.
Microscope Resolving Power
- The microscope is necessary to observe bacterial cells due to their small size.
- The microscope's resolving power allows for the visualization of bacterial cells beyond the limitation of the unaided eye.
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Description
Test your knowledge of bacterial cell structure, including size, shape, and arrangements. Learn about the unit of measurement used in bacteriology.
