Lesson 3a: BACTERIAL MORPHOLOGY Flashcards
It is defined as cell size and cell shape
Bacterial Morphology
The reason why cells are limited from growth rate and cell shape.
Surface-to-volume Ratio
Relationship of S/V ratio to Cell shape.
Indirectly proportional:
the higher the sv ratio, the smaller cell shape
Relationship of S/V ratio to efficient metabolism.
Directly proportional:
the higher the sv ratio, the higher the efficient rate of metabolism.
What is the cell diameter of most prokaryotes?
0.5 - 0.4 micrometer um
What is the cell length of most prokaryotes?
15 um micrometer
Cell shape: spherical
coccus
Cell shape: rod-like
bacillus
Cell shape: short rods
Coccobacillus
Cell shape: comma-shaped
Vibrio
Cell shape: wavy line
Spirillum
Cell shape: Spirochete
corkscrew
Cell shape: Filamentous
thread like shapes
A bacteria exhibits multiple forms of shape in a culture.
Polymorphic
A bacteria exhibits single form all through out the culture.
Monomorphic