Q.4
Question
Which statement is true?
a. A virion contains DNA and RNA.
b. Viruses are acellular.
c. Viruses replicate outside of the cell.
d. Most viruses are easily visualized with a light microscope.
Step-by-Step Solution
VerifiedOption : (b) Viruses are acellular.
Viruses differ in terms of structure, replication technique, host cells, and target cells. Viruses are parasitic and non-cellular, with no internal organelles, metabolic processes, or plasma membrane. The virion is made up of a nucleic acid core made up of either DNA or RNA, a protein outer coating, and an outer membrane made up of phospholipid membrane generated from the host cell and proteins.
Viruses are acellular (option b). The nucleic acid genome of either DNA or RNA is found in all virions, and it is protected by an exterior protein coat known as the capsid. Some viruses have an exterior component called the viral envelope that surrounds the capsid.
Viruses do not multiply on their own; instead, they exploit the host cell's enzymatic machinery to do so, causing the host cell to malfunction. Virus reproduction refers to the generation of new viral particles within the host. As a result, option is the proper response (b).
Option (a) A virion is made up of both DNA and RNA. A virion can only contain either DNA or RNA. As a result, this is a bad choice.
Viruses proliferate outside of the cell (option c). Viruses do not multiply on their own; instead, they exploit the host cell's enzymatic machinery to do so, causing the host cell to malfunction. Virus reproduction refers to the generation of new viral particles within the host. As a result, this is an inaccurate response.
Option (d) A light microscope can easily visualize most viruses. Under a light microscope, the majority of viruses are undetectable. As a result, this is an inaccurate response.
Viruses do not multiply on their own; instead, they rely on the host cell's enzyme machinery. As a result, Option (b) Viruses are acellular is the correct answer.