Question

Which one of the following statements about viruses is correct ?

• A. Viruses possess their own metabolic system
• B. All viruses contain both RNA and DNA
• C. Viruses are obligate parasites
• D. Nucleic acid of viruses is known as capsid.

Answer 1

The correct option is C Viruses are obligate parasites

Viruses lack their own independent metabolic system. They don’t have a nucleus and other organelles to perform cellular functions. They are simply a core of nucleic acid which is surrounded by a protein coat called as a capsid. They are totally dependent on their host for vital cellular activities. Hence viruses are called as obligate parasites.

The correct answer is C.