Rays absorbed by heavier materials like calcium and phosphorus and which can pass through the
tissues of human body and not through bones are:
i. Light rays
ii. Sound waves
iii. X-rays
iv. Infra-red rays

Define chemotherapy. What is their source of production? Give two examples of commonly used antibiotics in hospital. Differentiate between a bactericidal and bacteriostatic antibiotic.

How are peptides formed from amino acids? Mention the specific role of certain natural peptides. . 

Fill in the Blanks:.

a) Cereals and tuber are rich sources of …………………..

b) Microorganisms responsible for food contamination can be categorized as Virus, Bacteria and …………………..

c) Tape worm, hook worm etc. are known as ………………….. infestations. d) Adulteration of argemone seeds in mustard oil causes …………………..

e) Overactivity of thyroid gland is known as …………………..

f) Hypolipidemia implies decreased levels of ………………….. in blood.

g) Cyclamates and B.V.O. are dangerous food …………………..

h) Isoleucin and lysine are important …………………..

i) Butter, ghee, vanaspati are rich sources of ………………….. fats.

j) Fruits and vegetables are abundant sources of vitamins and …………………..

On squeezing the bulb of the dropper the pressure created inside the dropper is:
i. Less than atmospheric
ii. More than atmospheric
iii. Equal to the atmospheric
iv. None of these

Why underwater exercise suggested for the rehabilitation of muscles and joints?

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