Digestion includes breaking down substances into their simpler building blocks, synthesizing more complex cellular structures from simpler substances, and using nutrients and oxygen to produce atp. true or false

False

Explanation:

Metabolism  

Metabolism includes all the chemical reactions which take place inside the body cell. It refers to all the reactions needed to break down the substances into its constituents and then producing ATP ( Adenosine triphosphate ) by synthesizing these constituents. ATP is required to transport the energy which is utilized by the cellular metabolic process.

It consists of two processes – catabolism and anabolism.

Catabolism refers to break down of substances into simpler molecules to release energy. While anabolism refers to synthesis of simpler molecules into new complex molecules using the energy released in catabolic process.

Hence, both catabolism and anabolism are opposite to each other in functioning.

1.Initially, the substance is broken into smaller and simpler building blocks.

Example: glycogen is broken down into glucose molecules is a catabolic process.

2.Next, these building blocks are synthesized to form complex and bigger cellular structure.

Example: protein is synthesized from the molecules of amino acids is an anabolic process.

3.Using nutrients and oxygen, these simpler building blocks are synthesized to form ATP which plays a vital role in cells.

Both catabolic and anabolic processes help in balancing the energy during the metabolic process.

Digestion

1.The eaten food is broken down physically into smaller parts. This is also called mechanical digestion.

2.Digestion is the process which breaks down the complex food into simpler molecules. Digestion is supported by digestive enzymes or digestive juices that help in digestion. Thus, digestion is also known as chemical break down of food.

Examples include proteases enzyme helps in digestion of protein into amino acids.  Glycoside hydrolases enzyme help in digestion of polysaccharides into simple sugars.

These enzymes are digestive chemicals produced inside the body only to help in digestion. Apart from this, these chemicals also help remove unwanted microbes from the food molecules.

These molecules are then absorbed by the blood and carried to different parts of the body.