‘Cholera' is caused by

Filaria, malaria, dengue fever, sleeping sickness, yellow fever are transmitted by

Which one of the following pairs of diseases is viral as well as transmitted by mosquitoes ?

During an allergic reaction, the binding of antigens to IgE antibodies initiates a response, in which chemicals cause the dilation of blood vessels and a host of other physiological changes. Such chemicals are

Which of the following is an $STD$

Identify the molecules $(A)$ and $(B)$ shown below and select the right option giving their source and use.

Molecule             $\to $         Source                  $\to $                Uses