What is the role of the acid in our stomach?
The hydrochloric acid present in our stomach dissolves bits of food and creates an acidic medium. In this acidic medium, enzyme pepsinogen is converted to pepsin, which is a proteindigesting enzyme
How are fats digested in our bodies? Where does this process take place?
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
What are the necessary conditions for autotrophic nutrition and what are its byproducts?
Describe double circulation of blood in human beings.Why is it necessary?