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Tenth Grade (Grade 10) Microbiology Questions

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Grade 10 Microbiology
For kingdom Bacteria, the main criterion or qualification for membership is being a prokaryotic cell.
  1. True
  2. False
Grade 10 Microbiology
Viruses have a major impact on the living world.
  1. True
  2. False
Grade 10 Microbiology
How is a pathogen spread from one person to another person?
  1. through a mode of transmission
  2. through a portal of exit
  3. through a causative agent
  4. through a portal of entry
Grade 10 Microbiology
Mary Mallon, more popularly known as "Typhoid Mary" was quarantined on North Brother Island in New York because, when she was not feeling well, she went to work cooking for wealthy families, spreading the virus that causes typhoid fever to those who ate her contaminated food.
  1. True
  2. False
Grade 10 Microbiology
Prokaryotes can live where nothing else can survive. They can be found in boiling hot springs and Antarctic lakes.
  1. True
  2. False
Grade 10 Microbiology
Monerans are
  1. bacteria.
  2. one-celled organisms.
  3. protists.
  4. both a and b
Grade 10 Microbiology
How does a pathogen enter a new reservoir?
  1. through a portal of exit
  2. through a portal of entry
  3. through a susceptible host
  4. through a causative agent
Grade 10 Microbiology
Saprophytic bacteria is autotrophic.
  1. True
  2. False
Grade 10 Microbiology
Aerobic bacteria cannot be chemosynthetic.
  1. True
  2. False
Grade 10 Microbiology
Viruses are                 than cells.
  1. larger
  2. smaller
Grade 10 Microbiology
Eukaryotics cells have mesosomes.
  1. True
  2. False
Grade 10 Microbiology
What do Streptococcus thermophilus and Lactobacillus bulgaricus do in yogurt culture?
  1. The starter culture produces lactic acid and acetaldehyde.
  2. When mixed with O-culture they can be used in mozzarella and feta.
  3. The resulting acetaldehyde gives yogurt its characteristic flavor.
  4. a and b
  5. a and c
  6. all of the above
Grade 10 Microbiology
Which bacteria is used as a starter culture for yogurt?
  1. Lactococcus lactis
  2. Lactococcus cremoris
  3. Streptococcus thermophilus
Grade 10 Microbiology
What must be added to acidify the milk so that the rennet will work?
  1. wax
  2. bacteria
  3. casein
  4. food coloring
Grade 10 Microbiology
Every virus has a capsid and some can have additional membranes.
  1. True
  2. False
Grade 10 Microbiology
Prokaryotes are single-celled organisms that do not have membrane bound organelles. They generally are found in three shapes. They are            bacillus           , a rod shape,          coccus         , a sphere shape, and a spiral shape, called             spirillum            .
Grade 10 Microbiology
The optimum growth temperature for O-Culture bacteria and DL-Culture bacteria are 20 to 30 degrees C.
  1. True
  2. False
Grade 10 Microbiology
What fungus carries out fermentation in the production of alcohol (beers, wines) with a large production of carbon dioxide?
  1. Streptococcus
  2. yeast
  3. E. coli
  4. Staphylococcus
Grade 10 Microbiology
Most bacteria have extra pieces of DNA called            plasmids           . These small, circular DNA segments are replicated                 independently                 and can be               transferred               between cells.
Grade 10 Microbiology
If a bacterium cannot move it is missing             flagellum            .
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