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Sixth Grade (Grade 6) Microbiology Questions

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Grade 6 Microbiology
Which is not true of viruses?
  1. They are tiny, nonliving things that can enter a cell and reproduce inside.
  2. They cannot make or use food.
  3. They act like parasites and can live in a host organism and cause harm.
  4. They are like living things because they can reproduce and make more viruses.
  5. They are made of cells.
Grade 6 Microbiology
Bacteriophages are viruses that attack and destroy
  1. other viruses.
  2. bacteria.
  3. plants.
  4. humans.
Grade 6 Microbiology
Microscopic organisms are also known as
  1. meiosis.
  2. mitosis.
  3. microbes.
Grade 6 Microbiology
How do the cells of bacteria differ from those of other organisms?
  1. Bacteria cells need oxygen.
  2. Bacteria cells have no nucleus.
  3. Bacteria cells are much larger.
Grade 6 Microbiology
A type of asexual reproduction in which the organism divides in two is
  1. binary fission.
  2. conjugation.
  3. budding.
Grade 6 Microbiology
Microorganisms are either producers or consumers.
  1. True
  2. False
Grade 6 Microbiology
All bacteria are bad for humans.
  1. True
  2. False
Grade 6 Microbiology
The most simple creatures have a                 structure.
  1. nuclear
  2. unicellular
  3. complicated
Grade 6 Microbiology
Scientists did not know about protozoa before microscopes were invented.
  1. True
  2. False
Grade 6 Microbiology
Microorganisms are visible with the naked eye.
  1. True
  2. False
Grade 6 Microbiology
Protozoa live only in lakes and forests.
  1. True
  2. False
Grade 6 Microbiology
Bacteria are the smallest cells of all.
  1. True
  2. False
Grade 6 Microbiology
Bacteria are tiny living creatures that are smaller than human body cells and less than one thousandth of a millimeter long.
  1. True
  2. False
Grade 6 Microbiology
An example of a microorganism is the
  1. paramecium.
  2. sponge.
  3. mushroom.
  4. snail.
Grade 6 Microbiology
A form of sexual reproduction in which organisms fuse, or attach themselves to each other, and exchange genetic information is
  1. binary fission.
  2. conjugation.
  3. budding.
Grade 6 Microbiology
Which disease is viral?
  1. tuberculosis
  2. anthrax
  3. smallpox
  4. tetanus
Grade 6 Microbiology
Which is not true of bacteria?
  1. They are prokaryotes.
  2. They are single-celled organisms that do not have a nucleus.
  3. The bacterial cell is protected by a cell wall.
  4. They have a cell membrane inside of the cell wall that controls what can go in or out of the bacteria.
  5. The inside of the bacteria is made up of a jelly-like material called cytoplasm that contains the genetic material.
  6. Some have a flagellum which is a whip-like structure that helps the bacteria move.
  7. They are eukaryotes.
Grade 6 Microbiology
Bacteria are made up of many cells.
  1. True
  2. False
Grade 6 Microbiology
Bacteria are not helpful to humans and nature when they
  1. produce oxygen.
  2. help make certain foods like yogurt and cheese.
  3. break down chemicals in dead organisms.
  4. help clean up oil spills.
  5. cause food to spoil.
  6. help people digest food.
Grade 6 Microbiology
Protozoa are                              . (Select all that apply.)
  1. tiny creatures
  2. like dinosaurs
  3. like both plants and animals
  4. usually made of only one cell
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