Term
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Definition
| infectious agents that consist of just sing;e circle of RNA that is about 90 percent shorter than viruses |
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Term
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Definition
| an infectious agent classified as if it is alive but lacking most of the properties of life except when in a host cell, consisting of a protein coat and genetic material, either DNA or RNA |
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Term
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Definition
| two species living in close association, often physiologically connected |
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Term
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Definition
| membrane bound structures in eukaryotic organisms that are lacking in prokaryotic organisms |
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Term
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Definition
| external digestion where an organism puts digestive enzymes into the environment and then the small organic molecules moved into the organism to supply it with nourishment |
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