Question

class 9 why do we fall ill important questions

Answer 1

Name some common infectious disease?

Explain the effect of antibiotic penicillin on bacterial cells.

Human cells not affected by penicillin? Why?

What are antibiotics? Why are antibiotics ineffective against viruses?

How do communicable or infectious diseases spread?

What is AIDS? How does AIDS spread?

Expand HIV

Answer 2

write the difference between acute and chronic diseases.
what are the difference of infections diseases and non infections diseases.
write the symptoms of AIDS.