Viruses Chapter 2.1 Grade 6
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What is a tiny, nonliving particle that enters and then reproduces inside a living a cell?
What characteristics do viruses share?
- 1. nonliving
- 2. they are NOT cells
- 3. do NOT use their own energy to grow or respond to their surroundings
- 4. cannot make food, take in food, or produce wastes
- 5. like organisms, they can multiply
- 6. acts like a parasite
Although viruses can multiply, they do so differently than organisms. Viruses can only multiply when ___________.
Inside a living cell
What does a scientists call an organisms that a virus enters and multiplies inside?
What is an organism that lives on or in a host and causes it harm?
What shapes are viruses?
- Like bricks, threads or bullets
- Complex, robot-like shapes
What is a virus that infects bacteria? It is called a "bacteria eater."
What size are viruses?
- Vary in size
- Smaller than cells
- Cannot be seen with microscopes
Viruses are so small they are measured in ______________.
How are viruses named?
- ***Not binomial nomenclature
- 1. After the disease they cause (polio)
- 2. After the organisms they affect (tobacco mosaic)
- 3. Name them after people (Epstein-Barr/ mono)
What are two basic parts that all viruses have?
- 1. protein coat that protects the virus
- 2.inner core made of genetic material
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