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32 Cards in this Set

  • Front
  • Back
Eukaryotic phylogenetic relationships are obtained from what?
Fossils
True or False?
Aids in identification of bacteria are morphological characteristics, staining techniques, enzymatic activity and serolgical tests.
True
DNA finger-prints are obtained by what?
First restriction endonucleases and then gel electrophoresis
Nitrifying bacteria oxidize or reduce nitrogen compounds?
Oxidize
What bacterium inhabits mucous membranes of mammals?
Neisseria gonorrhea
Name two bacteria that cause life-threatening infections, have high G+C in their DNA, are acid-fast and have high lipid content.
Mycobacteria and corynebacteria
Fungi gain nutrition from the breakdown of what?
Complex organic molecules (ex: wood and lignin)
What kind of spores do both Penicillium and Aspergillus have?
Conidiospores
Aspergillus belongs to what phylum?
Ascomycota
What traits do species in the phylum ascomycota have?
They have septate hyphae, produce ascospores and sometimes conidiospores.
A protozoan cyst is equivalent to a bacterial aerial spore, a fungal aerial spore or a bacterial endospore?
Bacterial endospore
True or False?
Humans are the definitive host of both the beef tapeworm and the pork tapeworm.
True
What is a definitive host?
Where the parasite goes through sexual or asexual processes.
What is host range?
The spectrum of host cells in which a virus can multiply
What can be used to identify viruses?
Nucleic acid fingerprints and serological tests
Name two bacteria that cause life-threatening infections, have high G+C in their DNA, are acid-fast and have high lipid content.
Mycobacteria and corynebacteria
Fungi gain nutrition from the breakdown of what?
Complex organic molecules (ex: wood and lignin)
What kind of spores do both Penicillium and Aspergillus have?
Conidiospores
Aspergillus belongs to what phylum?
Ascomycota
What traits do species in the phylum ascomycota have?
They have septate hyphae, produce ascospores and sometimes conidiospores.
What are oncogenic viruses?
Viruses that cause cancer
What is a persistent viral infection?
One in which the disease processes occur over a long period of time and they are generally fatal
True or False?
Viroid RNA codes for proteins.
False
Colonization and invasion factors are carbohydrates, lipids or proteins?
Proteins
Prevention of pathogens from causing an infection is called what?
Antagonism
What are oncogenic viruses?
Viruses that cause cancer
What is a persistent viral infection?
One in which the disease processes occur over a long period of time and they are generally fatal
True or False?
Viroid RNA codes for proteins.
False
Colonization and invasion factors are carbohydrates, lipids or proteins?
Proteins
Prevention of pathogens from causing an infection is called what?
Antagonism
A relationship where one organism benefits and one is harmed is called what?
Parasitism
What branch of epidemiology deals with the frequency and distribution of risk factors in populations?
Descriptive epidemiology