Question

Find the correct statements about phages A. Phages clear the bacteria in the polluted water.
B. Phages are also used in the diagnosis of certain infections.
C. T-even phages are genetically closely related.
D. The enzymes secreted by the capsid are helpful in lysis of bacterial cell wall.
E. Phages have only double stranded DNA. Choose the correct answer from the options given below:

• A. A, B, D only
• B. B, D, E only
• C. C, D, E only
• D. A, B, C only

Hint:

Bacteriophages infect and destroy bacterial cells.

Answer 1

The Correct Option is A

Concept:
Bacteriophages are viruses that infect bacteria.
Step 1:
Phages destroy bacteria and help reduce bacterial population in polluted water. Thus A is correct.
Step 2:
Phages are used in diagnosis of bacterial infections. Capsid-associated enzymes help in dissolving bacterial cell wall. Thus B and D are correct.
Step 3:
All phages do not contain only double stranded DNA. Some may possess RNA or single stranded nucleic acids. Thus E is incorrect.
Step 4:
Correct statements are: \[ A,\quad B,\quad D \] \[ \boxed{\text{Correct Option = (1)}} \]