Question

short flow chart of viral disease in class 9

Answer 1

Infectious Agent

Viruses,bacteria,fungi,protozoa,different kind of worms etc.
Viruses-common cold,influenza,dengue,fever,AIDS(They live inside host cell,multiply very quickly)
Bacteria-Typhoid,cholera,tuberculosis,anthrax(They also multiply very quickly)
Fungi-Skin infection
Protozoa-malaria,kala azar
Worms- Elephantiasis, intestine worm infection(Multiply very slowly)

Many important life processes are similar in the bacteria group but not shared in virus group.The drug that block one of these biochemical mechanism in one member of the group will be effective against many other members of the group.But same drug will not work against a microbe belonging to a different group.

Antibiotic commonly block biochemical pathway important for bacteria.they work against many species of bacteria,rather than simply working against one.

Answer 2

explain why during winters the metallic handles of wooden door are cooler than the doorexplain why during winters the metallic handles of wooden door are cooler than the doorexplain why during winters the metallic handles of wooden door are cooler than the doorexplain why during winters the metallic handles of wooden door are cooler than the doorexplain why during winters the metallic handles of wooden door are cooler than the door