AP BIOLOGY

ANIMAL PHYSIOLOGY

DIGESTION IN HUMANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following correctly describes the purpose of digestion?
A
To break down complex food molecules into simple soluble molecules
B
To make complex food molecules from simple soluble molecules
C
To make use of simple soluble food molecules
D
To remove complex food molecules from the body
Explanation: 

Detailed explanation-1: -Digestion is the process of breakdown of complex food substances into simpler substances.

Detailed explanation-2: -Why is digestion important? Digestion is important for breaking down food into nutrients, which the body uses for energy, growth, and cell repair. Food and drink must be changed into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body.

Detailed explanation-3: -Chemical digestion, through a process called hydrolysis, uses water and digestive enzymes to break down the complex molecules. Digestive enzymes speed up the hydrolysis process, which is otherwise very slow.

Detailed explanation-4: -This process of breakdown of complex food substances into simpler forms is known as digestion.

There is 1 question to complete.