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Ninth Grade (Grade 9) Microbiology Questions

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Grade 9 Microbiology
Prokaryotic cells reproduce by means of
  1. synthesis
  2. mitosis
  3. binary fission
  4. telophase
Grade 9 Microbiology
Unicellular prokaryotes are found in extreme environments, and their cell walls do not contain peptidoglycans. Which of the following domains is described here?
  1. Bacteria
  2. Archaea
  3. Eukarya
  4. Protista
Grade 9 Microbiology
Which of the following describes one way that bacteria can be harmful?
  1. Bacteria recycles nutrients.
  2. Bacteria makes food.
  3. Bacteria causes disease.
  4. Bacteria does not spoil food.
Grade 9 Microbiology
Which term is used to describe a type of spiral-shaped bacteria?
  1. Cylinder
  2. Coccus
  3. Spirillum
  4. Bacillus
Grade 9 Microbiology
Which of the following terms correctly describes unicellular organisms, like bacteria?
  1. DNA
  2. Eukaryote
  3. Prokaryote
  4. Lysosome
Grade 9 Microbiology
What is a nonliving strand of genetic material that has a protein coat?
  1. A eukaryote
  2. A virus
  3. Prokaryotes
  4. Archeae
Grade 9 Microbiology
What are the names of 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
Why are RNA viruses harder to cure than DNA viruses are?
  1. They infect a lot of cells rapidly and can constantly reproduce.
  2. They constantly mutate and become immune to vaccines.
  3. They are just as hard to cure as DNA viruses are.
  4. They can reproduce indefinitely and multiply in number very quickly.
Grade 9 Microbiology
Unicellular prokaryotes that have cell walls with peptidoglycans are called                .
  1. Protists
  2. Archae
  3. Bacteria
  4. Eukarya
Grade 9 Microbiology
Which of the following describes one way in which bacteria are helpful?
  1. They help make food.
  2. They help spoil food.
  3. They help cause disease.
Grade 9 Microbiology
What is the suffix, or ending of the name, for the family name of a virus?
  1. -virales
  2. -virus
  3. -viridae
  4. -virinae
Grade 9 Microbiology
How do eubacterial diseases spread?
  1. Through blood, waste, or air
  2. Through air, saliva, or water
  3. Through food, saliva, or blood
  4. Through water, food, or air
Grade 9 Microbiology
These are measured in nanometers and are so small they can usually can only be seen with the aid of an electron microscope:
  1. bacteria
  2. viruses
  3. prokaryotes
  4. eukaryotes
Grade 9 Microbiology
Rod-shaped bacteria are called                .
  1. cocci
  2. bacilli
  3. spirilla
  4. spirochetes
Grade 9 Microbiology
A virus enters the cell, makes copies of itself, and causes the cell to lyse during which type of infection?
  1. bacterial infectioin
  2. lysogenic infection
  3. lysic infection
  4. lytic infection
Grade 9 Microbiology
Viruses are minute bits of cell which attack and take over a cell and reproduce inside it. Viruses are much smaller than even a bacterium, they are between 20 and 400 thousandth of a millimeter across. Viruses cannot survive on their own, they are not cells, just a bundle of 'instructions'.
  1. True
  2. False
Grade 9 Microbiology
How do viruses reproduce?
  1. Asexual reproduction
  2. Sexual reproduction
  3. Using a host cell's reproductive system
  4. They are not living things so they don't reproduce
Grade 9 Microbiology
During a lysogenic infection, the prophage is activated and the infection enters the                .
  1. bacteria
  2. cytoplasm
  3. host cell
  4. lytic cycle
Grade 9 Microbiology
A new kingdom was discovered when                 were viewed under a microscope.
  1. plants
  2. fungi
  3. microorganisms
  4. cells
Grade 9 Microbiology
How do viruses reproduce?
  1. They divide by mitosis
  2. They do so sexually, by external fertilization
  3. They replicate outside of the host
  4. They insert their DNA into the host cell
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