Which of the following are not the tastes of the tongue? 1. Sweet 2. Bitter 3. Salty 4. Spicy 5. Umami 6. Sour 7. Pungent Select the correct answer using the codes given below.

The amount of which of the following components in the air does not change in the process of respiration?

In the buccal cavity of human being digestion of which one of the following get started?

Oxygen transportation in a human body takes place through : 1. Blood 2. Lungs 3. Tissue The correct sequence of transportation is :

The sensitive area of the human tongue to bitterness is:

In human body, the digestion of protein begins in which of the following organs?