Consider statements about human diseases: 1. Bacterial diseases can be treated with antibiotics. 2. Viral diseases are often prevented by vaccines. 3. Fungal diseases are caused by protozoa. Which are correct? MCQ with Answer and Explanation

Bacterial infections (like tuberculosis, pneumonia) are effectively treated with antibiotics, which target specific bacterial structures or metabolic pathways. Many viral diseases (like polio, measles, influenza) can be prevented through vaccination, which stimulates the immune system to develop memory against the virus. Fungal diseases (like ringworm, candidiasis) are caused by fungi, not protozoa; protozoa cause diseases like malaria and amoebiasis. Thus, statements 1 and 2 are correct.