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12 Cards in this Set
- Front
- Back
Why are viruses considered to be nonliving?
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Viruses do not use energy to grow or respond to their surroundings
Viruses cannot make food, take in food, or produce waste |
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How do viruses multiply?
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They have to find a cell that matches them like a key, injects the DNA into the cell, it makes multiple copies, the cell fills up and bursts open and the new viruses set out to look for a new cell to infect
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Host
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A living thing that provides a source of energy for a virus or an organism
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Parasite
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Organisms that live on or in the host and causes harm to the host
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Bacteriophage
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Is a virus that infects bacteria called "Bacteria Gater"
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How are the cells of a bacteria different from those of allother organisms?
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Bacteria are prokaryotes
The genetic materials in their cells is not contained in the nucleus |
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What positive roles do bacteria play in people's lives?
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Preservation of food
Producing food Change foods-Milk into creme Fuel Decomposer Medicines Environmentally recylcling Clean up the enviroment |
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How does sexual reproduction differ from asexual reproduction?
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AR- a reproductive process that involves only one parent
SR- involves two parents who combine their genetic material to produce a new organism which differs from both parents, and produces offspring that are identical to the parent |
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Give an example of asexual reproduction.
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Binary Fission
Binary Fission-one parent cell-copies itself- identical offspring |
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**Give an example of bacterial sexual reproduction
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Conjucation
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Are bacteria heterotrophs or autotrophs? EXPLAIN
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Some are autotrophs make their own food by capturing and using the suns energy or chemical substances their environment
Some heterotrophs because they obtain food by consuming autotrophs or heterotrophs, or by eating milk or meat or eating compost called decomposer |
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Binary Fission
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Bacteria reproduces through this process in which one cell divides to form 2 identical cells
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