Biology · MICROBES IN HUMAN WELFARE

Consider the following statements about microbes and their characteristics: (A) Microbes include protozoa, bacteria, fungi and microscopic animal and plant viruses, viroids and prions. (B) Microbes like bacteria and fungi can be grown on nutritive media to form colonies that can be seen with the naked eyes. (C) Prions are proteinaceous infectious agents. (D) All microbes are pathogenic and cause harmful diseases in human beings. Which of the above statements are correct?

1. (A), (B), (C) and (D)
2. (B), (C) and (D) only
3. and (D) only
4. (A), (B) and (C) only