Microbiology Flashcards
What colour does gram positive bacteria stain?
Purple
What colour does gram negative bacteria stain?
Pinkish red
What shape is cocci bacteria?
Round
What shape is bacilli bacteria?
Rod shaped
Name 1 type of gram positive cocci bacteria.
What type of infection is it present in?
S. Anginosus
Involved in acute dentoalveolar infections
Name 1 type of gram positive bacilli bacteria.
What type of infection is it present in?
Actinomyces israelii
Involved in chronic dentoalveolar infections
Name 1 type of gram negative bacilli bacteria.
What type of infections is it present in?
Prevotella intermedia
Involved in periodontal disease and acute periapical abscesses
What type of bacteria does Metronidazole work on?
Only on strictly anaerobes
What does anaerobic bacteria mean?
Needs oxygen to survive
What does capnophilic bacteria mean?
Needs carbon dioxide to survive
What does facultative bacteria mean?
Can survive with or without oxygen
What does strictly anaerobic bacteria mean?
Species can survive without oxygen
When does antimicrobial resistance occur?
When microorganisms such as bacteria, viruses, fungi and parasites change in ways that render the medications used to cure the infections they cause ineffective
What is intrinsic resistance?
Due to the nature of the bacteria they are resistant due to common structural features
What is acquired resistance?
Mutation in the DNA
-transformation, transduction, conjugation
Acquisition of new DNA
