Question Detail

MIC 121 GENERAL CHARACTERISTICS AND STRUCTURE OF VIRUSES Objective Question

Question

Viruses are described as 'obligate intracellular parasites.' What does this term imply about their replication and metabolic processes?
Options
A They can replicate and carry out metabolic processes independently outside a host cell.
B They can only infect plant cells and rely on sunlight for energy.
C They rely entirely on the host's machinery (ribosomes, ATP, enzymes) for replication and metabolism.
Correct Answer
D They multiply by binary fission within the host cell.
Correct Answer

Option C is the correct answer.

Detailed Explanation

The text explicitly states: 'Obligate Intracellular Parasites: Viruses cannot replicate or carry out metabolic processes outside of a host cell. They rely entirely on the host's machinery (ribosomes, ATP, enzymes).'

Hint

Consider what 'obligate intracellular' means in the context of a parasite's lifestyle.

Question Info