BIOLOGICAL CLASSIFICATION
VIRUSES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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have a nucleus, as well as a cell wall.
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contain nucleic acids such as DNA or RNA.
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can replicate independently of a host cell.
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use organelles to perform life functions.
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Detailed explanation-1: -Although viruses are not classified as living things, they share two important traits with living things. They have genetic material, and they can evolve.
Detailed explanation-2: -Viruses have several common characteristics: they are small, have DNA or RNA genomes, and are obligate intracellular parasites. The virus capsid functions to protect the nucleic acid from the environment, and some viruses surround their capsid with a membrane envelope.
Detailed explanation-3: -Viruses are smaller and simpler in construction than unicellular microorganisms, and they contain only one type of nucleic acid-either DNA or RNA-never both.
Detailed explanation-4: -The simplest virions consist of two basic components: nucleic acid (single-or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.