Q. Which of the following are correct to describe viruses? I. Simple and unicellular organism. II. Contain DNA or RNA and enclosed by protein coat. III. Possess own metabolic system and respond to stimuli. IV. Maintain genetic continuity and undergo mutations. The correct combination is
A) I and II
B) II and IV
C) II and III
D) I and III
Explanation
Viruses are acellular, non-cytoplasmic structures and do not have own metabolic system because enzymes are absent. These have DNA or RNA and use host metabalic system.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.