Question 7 Which one is not a correct definition? a. Viral nucleic acid is always surrounded by capsid b . Viruses'genetic material can be either DNA or RNA c. An enveloped virus have more advantages then naked viruses d. Enveloped viruses are more sensitive to environmental conditions

The correct answer is:<br /><br />a. Viral nucleic acid is always surrounded by capsid<br /><br />Explanation:<br /><br />a. Viral nucleic acid is always surrounded by a capsid - This statement is incorrect. While viral nucleic acid is surrounded by a capsid in many viruses, there are exceptions. For example, in some viruses like bacteriophages, the viral nucleic acid is not enclosed in a capsid.<br /><br />b. Viruses' genetic material can be either DNA or RNA - This statement is correct. Viruses can have either DNA or RNA as their genetic material.<br /><br />c. An enveloped virus has more advantages than naked viruses - This statement is correct. Enveloped viruses generally have more advantages than naked viruses in terms of infectivity and evasion of the host immune system.<br /><br />d. Enveloped viruses are more sensitive to environmental conditions - This statement is correct. Enveloped viruses are generally more sensitive to environmental conditions such as heat, desiccation, and detergents compared to naked viruses.