Consider the following statements : I. No virus can survive in ocean waters. II. No virus can infect bacteria. III. No virus can change the cellular transcriptional activity in host cells. How many of the statements given above are correct?
A
Only one
B
Only two
C
All the three
D
None
Correct Answer
Explanation
Option (D) is correct because all three statements are scientifically false: viruses are the most abundant biological entities in the ocean, bacteriophages specifically infect bacteria, and all viruses replicate by hijacking and altering the host cell's transcriptional activity. Option (A) is a common error if one underestimates viral diversity or assumes they only infect complex eukaryotes, whereas viruses are ubiquitous and infect all domains of life. The core concept tested is the fundamental biological nature, ecological distribution, and replication mechanisms of viruses.
MicrobiologyVirusesVirusBacteriophageMarine virusesTranscriptional activityHost cells