SCIENCE
VIRUS AND BACTERIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Viruses and bacteria are both prokaryotes.
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Bacteria are eukaryotes and viruses are prokaryotes.
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Some bacteria are prokaryotes and some are eukaryotes.
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All bacteria are prokaryotes.
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Detailed explanation-1: -The correct answer is (a): all bacteria are prokaryotes. Bacteria and archaea are prokaryotes, whereas eukaryotes consist of kingdoms Animalia, Plantae, Fungi, and Protista. Viruses are not considered as true cells and are not included in any domains of life.
Detailed explanation-2: -Prokaryotic cells are believed to be the oldest cells on Earth. Thus, all bacteria are prokaryotic, but not all prokaryotes are bacteria. The other major group of prokaryotes is the blue green algae (also known as cyanobacteria).
Detailed explanation-3: -The bacteria are the oldest and simplest living organisms, and all of the bacteria are “prokaryotes, ” meaning that they do not have a true membrane-bound nucleus as eukaryotes do.
Detailed explanation-4: -Prokaryotic cells do not have a well defined nucleus. Their genetic material is called a nucleoid. Membrane bound cell organelles are absent. They are surrounded by a cell wall.
Detailed explanation-5: -They are small in size 0.1 mm to 10 mm. They do not possess membrane-bound organelles. They have single circular DNA as genetic material and plasmid. They possess mesosomes for respiration. Some are autotrophic and some are saprotrophic.