SCIENCE
VIRUS AND BACTERIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The virus only uses a host cell for shelter; it does not use a host cell to reproduce.
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The host cell only provides the virus with the food it needs to reproduce on its own.
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The virus can replicate its own genetic material, but it uses the host for the process of conjugation.
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The host cell provides the virus with resources and shelter; its proteins replicate the genetic material of the virus.
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Detailed explanation-1: -Viruses are obligate intracellular parasites. They enter host cells, they use host cell machineries to replicate their genome and synthesize their proteins, and they produce progeny virions that are released in the extracellular environment.
Detailed explanation-2: -Viruses cannot replicate on their own, but rather depend on their host cell’s protein synthesis pathways to reproduce. This typically occurs by the virus inserting its genetic material in host cells, co-opting the proteins to create viral replicates, until the cell bursts from the high volume of new viral particles.
Detailed explanation-3: -Virus enters cell by endocytosis. In the cytoplasm, the capsid comes apart, releasing the RNA genome. Replication and gene expression. The RNA genome is copied (this would be done by a viral enzyme, not shown) and translated into viral proteins using a host ribosome.
Detailed explanation-4: -Viruses (like the ones pictured above) are very tiny nonliving particles. Most biologists do not consider viruses to be living because they do not fulfill all the criteria for life. Viruses do not carry out respiration. They also do not grow or reproduce on their own. A virus needs a living cell in order to reproduce.
Detailed explanation-5: -DNA viruses replicate their genomes using DNA polymerase enzymes and transcribe their mRNA using DNA-dependent RNA polymerase enzymes.