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College Microbiology Questions

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College Microbiology
Which of the following is not true regarding Robert Koch?
  1. His methods and principles led to the isolation of pure bacterial cultures
  2. He rigorously proved the cause of disease
  3. His postulates are still the cornerstone of bacteriology.
  4. He discovered the cause of tuberculosis
  5. He discovered and isolated bacteria in boiling hot springs
College Microbiology
Which of the following statements are true?

1) Bacteria were the first life forms, and the foundation of biology.
2) The VAST majority of microbes do not cause disease.
3) There was ONLY anaerobic metabolism for first 2 billion years
4) Microbes created extant atmosphere (oxygen).
  1. 1, 2, 4
  2. 1, 2
  3. 1, 2, 3
  4. 1, 2, 3, 4
College Microbiology
There are more human cells than microbial cells in your body.
  1. True
  2. False
College Microbiology
E. coli have genes for lactose enzymes that are activated by regulatory genes when there is insufficient glucose available for the bacteria to metabolize.
  1. True
  2. False
College Microbiology
Prokaryotes grow much more quickly than eukaryotes due to their large surface/volume ratio.
  1. True
  2. False
College Microbiology
Microbilogy is the study of
  1. Space
  2. Animals
  3. Bacteria
  4. microorganisms
College Microbiology
Who was the first to connect cause (microorganisms) with effect (disease, growth, metabolic products etc)?
  1. Louis Pasteur
  2. Antonie van Leeuwenhoek
  3. Lucretius
  4. Lazzaro Spanzallani
College Microbiology
What was Louis Pasteur NOT responsible for?
  1. discovering fermentation
  2. determining the nature of disease
  3. disproving spontaneous generation
  4. isolating pure bacterial cultures
College Microbiology
The infective phase of Protozoa is the                  , and the asexual phase is the                  .
  1. Egg, Nymph
  2. Cyst, Trophozoite
  3. Larva, Egg
  4. Egg, Larva
  5. A and D
College Microbiology
Microbes existed from the beginning of time but were not discovered until around 1665 following the invention of the microscope by who?
  1. Louis Pastuer
  2. Anton Von Leuwanhoake
  3. Alfred Microbe
  4. Francisco Redi
College Microbiology
Bacteria are Prokaryotic organisms
  1. True
  2. False
College Microbiology
Which of the following is not one of Koch's postulates?
  1. The disease-causing organism must always be presents in animals suffering the disease but not in healthy animals
  2. The organism must be cultivated in a pure culture away from the animal body
  3. The organism must not cause symptoms of disease in multiple animal species
  4. The isolated organism must cause the disease when inoculated into healthy susceptible animals
  5. The organism must be isolated from the newly infected animals and cultured again in the laboratory, after which it should be seen to be the same as the original organism
College Microbiology
Who discovered Archaea?
  1. Carl Woese and George Fox
  2. Carl Woese and Louis Pasteur
  3. George Fox and Louis Pasteur
  4. Louis Pasteur
College Microbiology
Which is true regarding membrane chemistry in Bacteria, Eukarya and Archaea?
  1. Bacteria/Eukarya have ether linked lipids, archaea have ester linked lipids.
  2. Bacteria/Archaea have ether linked lipids, Eukarya have ester linked lipds.
  3. Bacteria/Eukarya have ester linked lipids, Archaea have ether linked lipids.
  4. Bacteria/Archaea have ester linked lipids, Eukarya have ether linked lipids.
College Microbiology
Which of the following is true regarding monomorphic/pleomorphic bacteria?
  1. Monomorphic means one shape and is observed in most pure cultures of bacteria; pleomorphic means multiple shapes
  2. Monomorphic means multiple shapes and is observed in most pure cultures of bacteria; pleomorphic means one shape
  3. Monomorphic means one shape; pleomorphic means multiple shapes and is observed in most pure cultures of bacteria
  4. Monomorphic means multiple shapes; pleomorphic means one shape and is observed in most pure cultures of bacteria
College Microbiology
ABC transport is only present in gram positive bacteria.
  1. True
  2. False
College Microbiology
Which is more dangerous to human beings-antigenic DRIFT or antigenic SHIFT-and why?
  1. Antigenic DRIFT-since this produces the quickest and largest degree of changes in the virus structure and we may not have immunity against it.
  2. Antigenic SHIFT-since this produces the quickest and largest degree of changes in the virus structure and we may not have immunity against it.
  3. Antigenic DRIFT-the small changes make the virus look like something we already have an immune response in place for, but we actually don't. This lets the virus hide from the immune responses needed to clear it out for a longer period of time.
  4. Antigenic SHIFT-the process completely changes the virus 100%, allowing it to jump into different species (i.e., from birds into humans). As such, we have no responses in place for the new virus.
College Microbiology
This scientist demonstrated that microorganisms are present in the air capable of contaminating sterile solutions, objects and areas.
  1. Louis Pasteur
  2. Robert Hooke
  3. Theodore Lister
  4. Thomas Edison
College Microbiology
A disease that pass directly from a vertebrate animal to humans and back, with no intermediate vector such as an insect.
  1. common cold
  2. zoonosis
  3. myiasis
  4. rotavirus
College Microbiology
Which is NOT a limitation of Koch's postulates?
  1. The pathogens must be anaerobes
  2. The pathogen must grow in pure culture
  3. Pathogens requiring complex nutrients from the host will fail
  4. Slow growing organisms will fail
  5. Organisms that do not grow on selected media will fail
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