Quiz: Kingdom Monera; Appendages Flashcards
A plasmid has the following characteristics
Contains the genes for carrying out coagulation.
Is copied during coagulation, & a copy is transferred from one bacterium to another.
In addition, some plasmids contain genes for toxins or antibiotic resistance.
When bacterium share genetic information, a copy of the plasmid is moved through a tubular structure into another cell. This tubular structure is called a
Sex pilus
Prokaryote flagellum have the following characteristics
Components include a basal body, hook & filament.
Components rotate like an outboard motor.
T or F: mechanically, the basal body is like an electric motor. However, unlike an electric fan which rotates due to the flow of electrons, the basal body rotates due to protons.
True
Movement occurs by a combination of runs & tumbles so the cell eventually moves toward attractants or away from the repellents. The part of the movement which is a straight line is called
Run
T or F: Prokaryote movement is not random but is not in a straight line
True
If taxis is caused by sunlight, it is called
Phototaxis
Spirochetes use a modified flagellum called an
Endoflagellum
The structure of a spirochete uses for movement includes
A basal body.
A hook.
A filament.
Outer sheath.
T or F: As the basal body rotates in a spirochete, the entire cell spins. It’s corkscrew-like shape propels it through the water.
True
Which species of spirochete causes Lymes Disease?
Borrelia burgdorferi
Which species of spirochetes causes syphillis?
Treponema pallidum
T or F: the ability to attach to a surface is important for many prokaryotes. One of the structures used for attachment is fimbriae.
True
T or F: fimbriae are miniature flagellum. Combined, the fimbriae on a cell surface move together to propel a bacterium through its environment.
False
T or F: In order for many pathogens to cause disease in the human body, they must first attach to host tissue. For some of the bacterial pathogens, attachment is performed by fimbriae.
True.
