Question 3 :
The organism which carries a disease from one host to another is called as

Question 4 :
Which of the following applications of biology helps to prevent the disease?

Question 8 :
Read the following statements.<div><br/>(A) The lips and fingernails may turn gay to bluish in colour in severe cases of typhoid.<br/>(B) Rhinoviruses infect the nose and respiratory passage but not the lungs.<br/>(C) Intestinal perforation and death may occur in severe cases of typhoid.<br/>(D) <i>Streptococcus pneumoniae</i> infects the alveoli of the lungs.<br/><br/></div><div>How many of the above statements are right?</div>

Question 13 :
Germ of germ-substance introduced into the body to prevent the occurrence of an infectious disease is known as<br/>

Question 17 :
A person had snacks from a street vendor, also drank water. He was later diagnosed with an infection. What was the mode of transmission of the disease?

Question 21 :
When children play bare-footed in pools of dirty water and flood water, they may suffer from

Question 24 :
Which of the following groups of the disease, the causative microorganism and disease symptom is/are true?

Question 25 :
The granulocyte to arrive first at the site of an infection is

Question 26 :
The limitations that are normally confronted while treating an infectious disease is/are

Question 29 :
Inoculation of a suspension of killed or attenuated pathogenic micro-organisms to stimulate the formation of antibodies is known as