Chapter 3 Worksheet Flashcards
T/F The only external structures found in bacterial cells are glycocalyces, flagella, fimbriae, and capsule
False, Pili is another external structure.
T/F Glycocalyx is a gelatinous, sticky substance surrounding the outside of the cell composed of
polysaccharides and proteins.
True
T/F Glycocalyx composed of organized repeating units of organic chemicals firmly attached to the
cell’s surface is called a capsule.
True
T/F Slime layer is a loose, water-soluble glycocalyx present on all bacterial cells.
False, some bacterial cells
T/F Glycocalyx protect the cells from desiccation or drying.
True
T/F Glycocalyx contributes to bacteria’s ability to cause a disease.
True
T/F Glycocalyx contributes to the formation of biofilms
True
T/F Biofilms are short movie films featuring living cells.
False, Biofilms are aggregates of many bacteria
living together on surfaces
T/F The thick, white plaque that forms on teeth and slime inside medical catheters are examples of biofilms.
True
T/F The presence of the slime layer may prevent bacteria from being recognized or destroy by defensive
cell of the host. Act as an antiphagocytic factor.
True, Both Slime layer and Capsule = Glycocalyx
T/F noncapsulated bacteria do not cause disease because the body’s defensive cell destroys them.
These bacteria are considered nonpathogenic and avirulent
True
T/F Capsules provides a way to escape phagocytosis
True
Movement towards an attractant or repellant?
Chemotaxis
The presence or absence of this structure allows us to classify bacteria as motile or nonmotile?
Flagella
Structure involved in conjugation?
Sex Pilus(i)
Flagella is in many places around the cell surface.
Peritrichous
A single flagellum located at one end of the cell
Monotrichous
Motility structure of found in Spirochetes
Axial Filament or Endoflagella
Corkscrew shape of a bacteria
Spirochete
