Term
| Why are viruses nonliving? |
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Definition
| Viruses do not have all of the characteristics of life. Do not respond to surroundings, reproduce on their own, no cellular organizations etc. |
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Term
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Definition
| A virus that infects bacteria. |
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Term
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Definition
| by the scientist who discovered them, organisms they infect, or diseases they cause |
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Term
| What are 2 functions of a virus's protein coat? |
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Definition
1.allows the virus to attach certain cells in the host
2.Protects the virus |
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Term
| How do active virus's multiply? |
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Definition
1.Virus attaches to the surface of a living cell.
2. Virus injects it's DNA into the cell
3.Reproduces/Multiplies it's virus parts
4. Assemble into new viruses
5. Cell bursts, viruses released to infect other cells, cell dies |
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Term
| How do Hidden Viruses multiply? |
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Definition
1.Virus attaches to the surface of bacteria.
2.Virus injects DNA into bacteria
3.The viruses DNA becomes part of the bacteria's DNA
4.After sometime, the viruses DNA removes itself and becomes active(begins to reproduce)
5.Multiplies
6.Viruses crowd in the bacteria,bacteria burst, releases the viruses. |
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Term
| What are 3 illnesses in humans caused by viruses? |
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Definition
| Polio, the flu,Chicken Pox,AIDS,the cold |
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Term
| How are viruses used for gene therapy? |
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Definition
| Scientists add a genetic material into a virus and then the virus delivers the genetical material to the cells that need it. |
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Term
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Definition
| Prokaryotes because the DNA in their cells is not contained in a nucleus. |
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Term
| Are Bacteria Living? Why? |
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Definition
| Yes,because they use energy, grow and respond to their surroundings. |
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Term
| What three shapes can bacteria be in? |
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Definition
| 1.Spherical2.Spiral3.Rodlike |
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Term
| Where are cell structures made? |
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Definition
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Term
| Asexual reproduction. # of parents? Name of Process? What occurs in Process? Result of Process? |
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Definition
| 1. Binary Fission. One cell divides into two identical cells. New cell get's own copy of parents DNA and more |
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Term
| Sexual Reproduction. What's the process?How many Parents? What occurs in the process? What results in the process? |
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Definition
| Conjugation.2.One bacteria transfers some DNA into another bacteria through a thread-like bridge that joins the 2 cells. The cell splits in half, more cells come out. |
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Term
| What are 3 ways that bacteria in your digestive system can help you? |
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Definition
| 1.Help digest food 2.Make vitamins 3.Compete for space with disease-causing organisms |
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Term
| How do bacteria help people with diabetes? |
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Definition
| Make their(human) insulin. |
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Term
| What is an infectious disease? |
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Definition
| An illness that can pass from one organism to the other |
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Term
| How are infectious diseases spread? They are spread by contact with.. |
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Definition
People example:shake hands.
Objects example:drink from same cup
Animals:Get bitten by a tick -> Lyme disease
Environmental Sourses example:drink contaminated water |
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Term
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Definition
| A chemical that can kill bacteria without harming a person's cells. |
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Term
| Why are antibiotics becoming less effective now? |
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Definition
| Bacteria has become resistant, become used to, the can survive and reproduce |
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