Microbiology Fundamentals: A Clinical Approach, 2nd Ed.
by Cowan Chapter 1
Microbiology Correct Answer- Specialized area of biology that deals with
... [Show More] living
things too small to be seen without magnification
Organism Correct Answer- Any contiguous living system or life form, such as an
animal, plant or bacterium.
Pathogen Correct Answer- Microbes (bacterium, virus, or other microorganism)
that can cause disease.
Pathogenicity Correct Answer- The ability of an organism to cause disease (i.e.,
harm the host). This ability represents a genetic component of the pathogen and the
overt damage done to the host is a property of the host-pathogen interactions.
Virulence Correct Answer- Virulence is a harmful quality possessed by
microorganisms that can cause disease. A virus spreads disease, and it is a quality
possessed by viruses that are on the loose and spreading.
Major groups of microorganisms in order from largest to smallest Correct AnswerBacteria
Archaea
Protozoa
Fungi
Helminths (worms)
Viruses
Algae
Microbes are easy to study because... Correct Answer- They reproduce rapidly
They can be grown in large populations in the lab
Microbes are difficult to study because... Correct Answer- They can't be directly
seen & have to be analyzed through indirect means
Eu-Kary Correct Answer- True nucleus, the only cells containing a nucleus.
Pro-Kary Correct Answer- Pre nucleus, Bacteria & archaea have no true nucleus.
Prokaryotes include... Correct Answer- Bacteria
Archaea
Prokaryotes have been on the planet... Correct Answer- 3.5 billion years
Eukaryotes have been on the planet... Correct Answer- 1.8 billion years
Eukaryotes were precursors to... Correct Answer- Organisms that eventually
formed multicellular animals
Endosymbiosis or Symbiogenesis Correct Answer- An evolutionary theory that
explains the origin of eukaryotic cells from prokaryotes. It states that several key
organelles of eukaryotes originated as a symbiosis between separate single-celled
organisms. [Show Less]