During formation of bread, the product that raises the bread is _____.

1. 1. Yeast
   2. Water
   3. Bacteria
   4. Carbon dioxide

Ageing in human beings is caused by disappearance of which of the following glands?

1. 1. Thyroid
   2. Thymus
   3. Pituitary
   4. Parathyroid

Antigen is a substance which _____.

1. 1. lowers body temperature
   2. triggers the immune system
   3. is used as an antidote to poison
   4. destroys harmful bacteria

The unit of energy produced by food in the human body is called _____.

1. 1. Calorie
   2. Watt
   3. DNA
   4. Ampere

Warm-blooded animals maintain a high body temperature for faster _____.

1. 1. Breeding
   2. Digestion
   3. Breathing
   4. Movement

Which of the following sets contains foods rich in carbohydrates?

1. 1. Potato, ghee and cucumber
   2. Wheat, ghee and spinach
   3. Rice, lemon and mustard oil
   4. Banana, potato and rice

The Global Iodine Deficiency Disorder Day is observed on _____.

1. 1. 31st October
   2. 5th  November
   3. 30th October
   4. 21st October

Which type of cells in our body acts as an immune system against diseases?

1. 1. Haemoglobin
   2. White blood cells
   3. Platelets
   4. Red blood cells

Who invented the Polio vaccine (Oral)?

1. 1. Burk Holder
   2. Albert Sabin
   3. Janas Salk
   4. Robert Koch

Which of the following is a mammal?

1. 1. Platypus
   2. Ostrich
   3. Duck
   4. Crocodile