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Ninth Grade (Grade 9) Health and Medicine Questions

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Grade 9 Microbiology
How do viruses reproduce?
  1. They divide by mitosis.
  2. They replicate outside of the host.
  3. They insert their DNA into the host cell.
  4. They do so sexually, by external fertilization.
Grade 9 Microbiology
Bacteria reproduce through
  1. binary fission.
  2. conjugation.
  3. mitosis.
  4. replication.
Grade 9 Microbiology
Bacteria form endospores to survive unfavorable conditions.
  1. True
  2. False
Grade 9 Microbiology
In what way are bacteria and viruses similar?
  1. Bacteria and viruses have nuclei.
  2. Bacteria and viruses destroy cells as they grow.
  3. Bacteria and viruses can be cured with antibiotics.
  4. Bacteria and viruses need a host cell to reproduce.
Grade 9 Microbiology
What is a nonliving strand of genetic material that has a protein coat?
  1. a virus
  2. an archaea
  3. a eukaryote
  4. a prokaryote
Grade 9 Microbiology
Why are RNA viruses harder to cure than DNA viruses are?
  1. They are only as hard to cure as DNA viruses are.
  2. They constantly mutate and become immune to vaccines.
  3. They infect a lot of cells rapidly and can constantly reproduce.
  4. They can reproduce indefinitely and multiply in number very quickly.
Grade 9 Microbiology
What are the three kinds of fungi?
  1. sac, club, mildew
  2. slime mold, water mold, mildew
  3. sac, club, imperfect
  4. water mold, sac, mildew
Grade 9 Microbiology
How does a virus infect a cell?
  1. It moves through the cell.
  2. It forcefully attacks the cell.
  3. It contacts the cell membrane.
  4. Its protein coat tricks the cell into letting it in.
Grade 9 Microbiology
Rod-shaped bacteria are called
  1. bacilli.
  2. cocci.
  3. spirilla.
  4. spirochetes.
Grade 9 Diet and Nutrition
Identify the food that is not a good source of protein.
  1. steak
  2. eggs
  3. potato
  4. peanuts
Grade 9 Microbiology
In what way are bacteria helpful?
  1. They make food.
  2. They spoil food.
  3. They cause disease.
Grade 9 Microbiology
All viruses contain
  1. RNA and a capsid.
  2. DNA and a protein coat.
  3. lipids and a protein coat.
  4. nucleic acids and a protein coat.
Grade 9 Microbiology
How are bacteria cells different from the cells of other organisms?
  1. They do not have flagella.
  2. They do not have a nucleus.
  3. They do not have cytoplasm.
  4. They do not have a cell membrane.
Grade 9 Microbiology
How does a virus reproduce?
  1. It doubles in size and splits in two.
  2. It takes control of another cell.
  3. It mates with another virus.
Grade 9 Microbiology
                are measured in nanometers and are so small they can usually only be seen with the aid of an electron microscope.
  1. Bacteria
  2. Eukaryotes
  3. Prokaryotes
  4. Viruses
Grade 9 Microbiology
Viruses that specialize in the infection of bacteria are
  1. bacteriophages.
  2. bacterioviruses.
  3. retroviruses.
  4. virophages.
Grade 9 Microbiology
E. coli and salmonella are not harmful microorganisms.
  1. True
  2. False
Grade 9 Microbiology
Streptomycin and penicillin are products of helpful microorganisms.
  1. True
  2. False
Grade 9 Microbiology
There are two types of viruses: active viruses and hidden viruses. An active virus reproduces and destroys the cell it attacks. Which describes a hidden virus?
  1. The virus's genetic material takes over the functions of the attacked cell immediately.
  2. The virus attaches to the surface of a bacterium, injects genetic material, takes over cells functions, produces proteins, and destroys the cell.
  3. The genetic material of the virus is injected into the cell's genetic material and becomes a part of the cell's DNA until triggered to reproduce.
  4. The virus survives only in water.
Grade 9 Microbiology
Most eukaryotes are unicellular organisms.
  1. True
  2. False
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