SCIENCE
VIRUS AND BACTERIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Viruses are nonliving infectious agents.
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Viruses can replicate without a host cell.
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Viruses can be killed by strong antibiotics.
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Viruses are similar to bacterial cells.
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Detailed explanation-1: -Viruses are non-cellular, microscopic infectious agents that can only replicate inside a host cell. From a biological perspective, viruses cannot be classified either a living organism or non-living. A virus can be an infectious agent which only replicates within a host organism.
Detailed explanation-2: -Viruses are assembles of organic molecules that consist of some short strands of RNA or DNA encapsulated within a protein shell. They are often referred to as if they were living organisms, but they don’t meet the criteria listed above for living things.
Detailed explanation-3: -Definition. A virus is an infectious microbe consisting of a segment of nucleic acid (either DNA or RNA) surrounded by a protein coat. A virus cannot replicate alone; instead, it must infect cells and use components of the host cell to make copies of itself.
Detailed explanation-4: -Non-Living Infectious Agents They have one or more cells with DNA. They are capable of reproducing, growing, and developing. They are capable of capturing & using energy & raw materials. They are able to sense & respond to the environment. They are capable of evolving over generations.
Detailed explanation-5: -Nonliving characteristics include the fact that they are not cells, have no cytoplasm or cellular organelles, and carry out no metabolism on their own and therefore must replicate using the host cell’s metabolic machinery. Viruses can infect animals, plants, and even other microorganisms.