Which one of the following features is absent in a virus ? A)reproduce within host cell B)presence of cell wall C)fully parasitic in nature D)presence of either DNA or RNA
Option B) A virus has a simple structure. It has no internal cellular structure, no cell wall or cell membrane, just the protein coat that holds the string of nucleic acid. It is made only of a nucleic acid + a protein coat. A cell wall is a layer located outside the cell membrane found in plants, fungi, bacteria, algae, and archaea.
