Organophosphates inhibit the enzyme cholinesterase. Which of the following is a cholinesterase inhibitor?

Which scientist discovered the vaccines for anthrax,chicken cholera,and rabies?

Match the correct group of disease, causative agent, and symptoms.

Name of Disease	Causative agent	Symptoms
$1$. Malaria	$i$. $Entamoeba \text{ } histolytica$	$p$. Diarrhoea and flatulence
$2$. Elephantiasis	$ii$. $Plasmodium \text{ } ovale$	$q$. Enlargement of lymph vessels and nodes
$3$. Amoebiasis	$iii$. $Brugia \text{ } malayi$	$r$. Arthralgia and anaemia

Which component present in the eyes,skin,or saliva acts as a physiological barrier to resist microorganisms?

Which substance,when present in higher amounts in the body,leads to a fever-like condition?

Consider the following statements:
$I.$ People should get vaccinated to avoid infection.
$II.$ Vaccination is available against polio,cholera,typhoid,tuberculosis,and many other diseases.
$III.$ Eradication of vectors is necessary for diseases like malaria and filariasis.
$IV.$ Dengue and chikungunya are both spread by $Culex$ mosquitoes.
Which of the statements given above are correct?