Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of 

1. diaphragm

2. neck

3. tongue

4. epiglottis

Which of the following components of our food are taken in small quantities?

(1) Carbohydrate and proteins

(2) Proteins and minerals

(3) Proteins and lipids                           

(4) Minerals and vitamins

What does food provide?
a. Energy
b. Organic material
c. Heat
d. More than one option is correct

Which of the following is required in small quantities?

Which of the following plays an important role in all metabolic processes not being a major substrate?