SCIENCE
VIRUS AND BACTERIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The are not made of cells
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they do not contain genetic material
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they can reproduce by themselves
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They are alive
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Detailed explanation-1: -Viruses are not made out of cells. A single virus particle is known as a virion, and is made up of a set of genes bundled within a protective protein shell called a capsid. Certain virus strains will have an extra membrane (lipid bilayer) surrounding it called an envelope.
Detailed explanation-2: -All viruses are obligate parasites; that is, they lack metabolic machinery of their own to generate energy or to synthesize proteins, so they depend on host cells to carry out these vital functions.
Detailed explanation-3: -Final Answer: Viruses do not infect bacteria, fungi and algae is not the correct statement.
Detailed explanation-4: -They have ability to synthesize nucleic acids by replication. Antibiotics do not acts against virus as they are made up of polymorphic protein coat. Viruses have different type of symmetry like icosahedral and helical. So, the correct answer is option B.
Detailed explanation-5: -Correct option: (B) They multiply only in host cell.