Table of contents

1. Introduction to Microbiology3h 22m
2. Disproving Spontaneous Generation1h 18m
3. Chemical Principles of Microbiology3h 38m
4. Water1h 28m
5. Molecules of Microbiology2h 23m
6. Cell Membrane & Transport3h 28m
7. Prokaryotic Cell Structures & Functions5h 52m
8. Eukaryotic Cell Structures & Functions2h 18m
9. Microscopes2h 46m
10. Dynamics of Microbial Growth4h 36m
11. Controlling Microbial Growth4h 10m
12. Microbial Metabolism5h 16m
13. Photosynthesis2h 31m
14. DNA Replication2h 25m
15. Central Dogma & Gene Regulation7h 14m
16. Microbial Genetics4h 44m
17. Biotechnology3h 0m
18. Viruses, Viroids, & Prions4h 56m
19. Innate Immunity7h 15m
20. Adaptive Immunity7h 14m
21. Principles of Disease6h 57m

18. Viruses, Viroids, & Prions

Animal Viruses: DNA Virus Synthesis & Replication

Microbiology

18. Viruses, Viroids, & Prions

Animal Viruses: DNA Virus Synthesis & Replication

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Multiple Choice

Which of the following has never been found in a virus?

DNA.

RNA.

Lipids.

Ribosomes.

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Verified step by step guidance

Understand the basic structure of a virus: Viruses are composed of genetic material, either DNA or RNA, surrounded by a protein coat called a capsid. Some viruses also have an outer lipid envelope.

Identify the components that are commonly found in viruses: Viruses can contain either DNA or RNA as their genetic material, but not both. Some viruses also have lipid envelopes derived from the host cell membrane.

Consider the role of ribosomes: Ribosomes are cellular structures responsible for protein synthesis. They are found in all living cells but are not present in viruses.

Recognize that viruses rely on host cells for replication: Since viruses lack ribosomes, they cannot synthesize proteins on their own and must hijack the host cell's ribosomes to produce viral proteins.

Conclude that ribosomes are not a component of viruses: Given that viruses do not have the machinery for protein synthesis, ribosomes are never found in viruses.