Question

part 2: how does the body use food for energy?
open the biomolecules on the menu click & learn. the following questions will guide you through several different sections. answer the questions based on the information in the click & learn and your own knowledge and experience.
first, go to the \how is food digested?\ section and read the \overview\ page. you can select any of the bold underlined terms to view their definitions.

1. why does your body need to digest food?
2. fill in the table to show which biomolecule is represented by which symbol in the click & learn.

symbol biomolecule
symbols in the table
go to the \mouth\ page by selecting the
ext\ button in the click & learn.

1. if the athlete eats the spaghetti or steak, what happens to the food in their mouth?
2. what are the two types of digestion that occur in the mouth?

go to the \esophagus\ and \stomach\ sections by selecting the
ext\ button.

1. the athlete decides to eat the spaghetti.

the following illustrations represent what happens to the spaghetti in their stomach.

Explanation:

1. The body needs to digest food to break it down into smaller, absorbable molecules for energy - production, growth, repair, and maintenance of cells and tissues.
2. When an athlete eats spaghetti or steak, in the mouth, mechanical digestion occurs as teeth chew the food into smaller pieces, and chemical digestion starts with enzymes like amylase in saliva beginning to break down carbohydrates in the spaghetti.
3. The two types of digestion in the mouth are mechanical digestion (chewing) and chemical digestion (action of enzymes in saliva).

Answer:

1. To break food into absorbable molecules for energy, growth, repair and cell - tissue maintenance.
2. Mechanical digestion by chewing and chemical digestion by salivary enzymes start.
3. Mechanical and chemical digestion.