Q: 65 (CDS-I/2013)

Consider the following statements regarding antibiotics:
1, They are used to destroy disease causing bacteria.
2. They can be applied to the skin, swallowed or injected to fight micro-organisms inside the body,
3. They are effective against disease-causing viruses.
4. The first antibiotic to be discovered was tetracycline.
Which of the statements given above is/are correct ?
question_subject: 
Science
question_year: 
2013
question_exam: 
CDS-I
stats: 
0,1384,1472,1464,848,264,280