1. COMPOUNDS OF LIVING THINGS
Chapter 11 – 2
Part 1

2. CARBOHYDRATES
Carbohydrates are biochemicals that are made of sugar molecules bonded together.

3. SIMPLE CARBOHYDRATES Glucose is a simple sugar or simple carbohydrate.
The body can break down simple sugars quickly for energy.
Simple sugars include sucrose, lactose, and fructose.

4. COMPLEX CARBOHYDRATES
Complex carbohydrates are composed of 3 or more simple sugars.
The simple sugars join together to form chains of repeating units.
These break down slowly providing a long term source of energy.
Sources are legumes, whole grains, and starchy vegetables.

5. Living things use carbohydrates mostly as a source of energy.
Example: glycogen supplies energy to muscle cells.
They have other uses as well.
Example: cellulose gives cell walls in plants their rigid structure.

6. LET’S FIND OUT!
What foods contain starch?
LAB: Testing for Starches