Viruses are:
Correct answer: C. Obligate, intracellular parasites
- A. Always viewed with a light microscope
- B. Are an enzyme-nucleus mixture
- C. Obligate, intracellular parasites
- D. Cellular
- E. Host independent
Explanation
Viruses are obligate, intracellular parasites, which means they require a host cell to reproduce and carry out their life cycle. They cannot replicate or metabolize independently outside of a host cell. Viruses are composed of genetic material (DNA or RNA) enclosed in a protein coat called capsid.
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About Kingdom Protista
Kingdom Protista contains mainly unicellular eukaryotes, although some forms are colonial or multicellular, with varied nutritional and reproductive methods. Questions examine protozoans, algae and examples such as Amoeba, Paramecium and Euglena, while distinguishing protists from prokaryotes, fungi and true plants.
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