Correct the following statements if they are false (without changing the first word).

1. DDT is an antiseptic.
2. Penicillin is a disinfectant.
3. Disinfectants are applied on the body.
4. Deodorants are both antiseptic as well as disinfectant.
5. Alexander Fleming discovered the first sulphonamide.
6. Antibiotics cannot be made synthetically.
7. Sulphonamides are now rarely used.

List any three uses of antibiotics.

Which of the following immunity is present from our birth?

1. Innate immunity
2. Active immunity
3. Passive immunity
4. Acquired immunity

Naturally acquired active immunity would be most likely acquired through which of the following processes?

1. vaccination
2. drinking colostrum
3. natural birth
4. previous infection with a disease-causing organism