a. The ability of an organism to cause infection is called………………….

b. The causative agent of Whooping cough is ……………………….

c. Both yellow fever and Dengue fever are transmitted through the bites of ………….mosquito.

d. Viruses responsible for causing common cold are………………………

e. A toxin that has been treated to destroy its toxic property without affecting its antigenicity is called …………………….

 Explain the metabolism of Carbohydrates in human body

Difference between density and relative density.

Vaccination to prevent small pox was introduced by;

i) Louis Pasteur

ii) Edward Jenner

iii) Robert Koch

iv) Antony Van Leeuwenhock

Explain the two types of errors present in measurement.

Match the items given in Column A with those given in Column B:

How do fungi differ form bacteria? Write briefly about the characteristics of Candida albicans. Mention the various diseases caused by this fungus.