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Seventh Grade (Grade 7) Microbiology Questions

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Grade 7 Microbiology
Which statement is true about viruses?
  1. They are non-living.
  2. They do not have nucleus or organelles.
  3. They cannot be seen with a light microscope.
  4. They do not have a cell membrane.
  5. all of the above
Grade 7 Microbiology

This question is a part of a group with common instructions. View group »

Most biologists today consider viruses to be nonliving.
  1. True
  2. False
Grade 7 Microbiology
All bacteria are harmful to humans.
  1. True
  2. False
Grade 7 Microbiology
What do viruses require to make copies of themselves?
  1. food
  2. light
  3. water
  4. host cell
Grade 7 Microbiology
Cold sores, measles, and the flu are caused by viruses.
  1. True
  2. False
Grade 7 Microbiology
What is the outer layer of some bacteria that allows the bacteria to sneak past the immune system of an animal?
  1. capsule
  2. cell wall
  3. cell membrane
  4. nucleus
  5. cilia
Grade 7 Microbiology
What are the three main categories of protists?
  1. fungus-like, dino-like, and bacteria-like
  2. plant-like, animal-like, and fungus-like
  3. bacteria-like, fungus-like, and animal-like
  4. plant-like, human-like, and bacteria-like
Grade 7 Microbiology
What percent of bacteria is good?
  1. 50%
  2. 75%
  3. 99%
  4. 45%
Grade 7 Microbiology
What happens to a unicellular organism if the cell dies?
  1. The organism shrinks.
  2. The organism dies.
  3. Nothing. A new cell grows to replace it.
  4. The organism lives.
Grade 7 Microbiology
What proteins protect cells from viruses?
  1. vaccines
  2. interferons
  3. white blood cells
  4. red blood cells
Grade 7 Microbiology
A bacteriophage is a virus that infects bacteria.
  1. True
  2. False
Grade 7 Microbiology

This question is a part of a group with common instructions. View group »

Viruses can multiply only when they are outside of living cells.
  1. True
  2. False
Grade 7 Microbiology
Most single-celled organisms
  1. grow as the cell gets larger.
  2. reproduce asexually.
  3. do not have cells that perform specific functions.
  4. all of the above
Grade 7 Microbiology
A microorganism can only be seen using a microscope.
  1. True
  2. False
Grade 7 Microbiology
                is NOT a type of fungi.
  1. Imperfect fungi
  2. Zygote fungi
  3. Sac fungi
  4. Mushroom fungi
Grade 7 Microbiology
A virus is a a tiny, non-living particle that invades and multiplies inside a living cell.
  1. True
  2. False
Grade 7 Microbiology
Because microbes can cause disease, they actually help to keep animal populations in balance by keeping herds from getting too large.
  1. True
  2. False
Grade 7 Microbiology
In pasteurization, heat is used to rid food of harmful bacteria.
  1. True
  2. False
Grade 7 Microbiology
A bacteria is a single-celled organism with a prokaryotic cell type.
  1. True
  2. False
Grade 7 Microbiology
Bacteria are one-celled organisms found nearly everywhere on the body.
  1. True
  2. False
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