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Many scientists classify viruses as non-living. The single, MOST important reason why viruses are classified as non-living is that they
A) do not contain nuclei.
B) are not composed of cells.
C) are not able to reproduce.
D) do not contain nucleic acid.

Respuesta :

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The right option is; B) are not composed of cells.

The single, MOST important reason why viruses are classified as non-living is that they are not composed of cells. The cell is the basic unit of structure and function in organisms. All living organisms are composed of one or more cells (according to the cell theory) and viruses do not have cells. Therefore, many scientists classify viruses as non-living.

Viruses are non-cellular microscopic infectious organism that are composed of two main parts; nucleic acid (DNA or RNA) and a protein coat that protects the nucleic acid. Viruses require a living cell (host) to reproduce and usually cause disease in the host organism.


The single most important reason why viruses are classified as non-living is that (B) they are not composed of cells.

Further Explanation:

The living things comprise up of membrane bound units containing the molecules of life. These units are known as cells. Cell is the functional and structural unit of life. The unicellular organisms contain only one cell whereas the multicellular organisms are comprised of many cells in their body. The cells can be specifically grouped together to form tissue. The smallest known cell is a mycoplasma which is a bacteria.

Viruses are infectious, microscopic and non-cellular organism that are composed of major parts that are the protein coat that protects nucleic acid and the nucleic acid itself. The genetic material can be either or DNA or RNA. The genetic material can be started or double stranded. The machinery of reproduction is not present in the viruses under for viruses are not considered as living. The viruses can take up the machinery of the host organism for the reproduction.

Learn more:

     •    Learn more about viruses https://brainly.com/question/3889603

     •    Learn more about DNA https://brainly.com/question/334927

     •    Learn more about RNA https://brainly.com/question/2416343

Answer Details:

Grade: High School

Subject: Biology

Chapter: Microbiology

Keywords:

Viruses, nucleic acids, DNA, RNA, mycoplasma, bacteria, cell, infectious, non-reproductive, fundamental unit, machinery, microbiology, host organism, unicellular organism, multicellular organisms.

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