Question

use the model to describe how food is broken down in the body to help you grow and have energy. how food is broken ... image your answer assigned type your answer work cannot be turned in after the due date turn in

Explanation:

Food breakdown starts with mechanical and chemical digestion in the mouth: teeth chew food (mechanical), and salivary enzymes like amylase break down carbohydrates. The food bolus moves to the stomach, where stomach acid and enzymes (e.g., pepsin) break down proteins, and churning mixes food into chyme. Chyme enters the small intestine, where bile from the liver emulsifies fats, and pancreatic enzymes break down carbs, proteins, and fats into small nutrients (glucose, amino acids, fatty acids). These nutrients are absorbed into the bloodstream through the intestinal wall. The bloodstream carries glucose to cells for energy via cellular respiration ($C_6H_{12}O_6 + 6O_2
ightarrow 6CO_2 + 6H_2O + \text{energy}$), and amino acids/fatty acids are used for growth, repair, and storing energy. Undigested waste moves to the large intestine, where water is absorbed, and waste is eliminated.

Answer:

1. Mouth: Mechanical digestion (chewing) breaks food into small pieces; salivary amylase starts chemical breakdown of carbohydrates into simple sugars.
2. Stomach: Stomach acid and enzymes (like pepsin) break down proteins, and muscle churning turns food into a thick liquid called chyme.
3. Small Intestine: Bile from the liver emulsifies fats, and pancreatic enzymes fully break down carbs, proteins, and fats into tiny nutrients (glucose, amino acids, fatty acids). These nutrients are absorbed into the bloodstream through the intestinal lining.
4. Energy and Growth: Glucose from digested carbs is carried by blood to cells, where it reacts with oxygen in cellular respiration to release energy for body functions. Amino acids are used to build and repair body tissues (supporting growth), and excess nutrients are stored for later energy use.
5. Large Intestine: Undigested food waste moves here, water is absorbed, and the remaining waste is eliminated from the body.