Submitted by: Submitted by tatyana99
Views: 10
Words: 804
Pages: 4
Category: Business and Industry
Date Submitted: 11/30/2015 08:20 AM
Name: ______________________________________
Date: ________________________
Student Exploration: Identifying Nutrients
Vocabulary: carbohydrate, disaccharide, lipid, monosaccharide, polysaccharide, protein, starch
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. What are the major types of nutrients you can get from food? ________________________
_________________________________________________________________________
2. How are these nutrients used by your body? _____________________________________
_________________________________________________________________________
_________________________________________________________________________
_________________________________________________________________________
Gizmo Warm-up
Have you ever wondered what is in your food? Scientists
use a variety of tests to determine the nutritional content of
food. You will learn four of those tests with the Identifying
Nutrients Gizmo™.
1. Below the Food samples label, drag tube A into the
Food sample holder. Below the Benedict test, click
the Test button. What is done in the Benedict test?
___________________________________________
___________________________________________
___________________________________________
2. The Benedict test is a test for monosaccharides; simple sugars like glucose or fructose
(fruit sugar). In contact with monosaccharides, the Benedict solution turns from blue to pink.
Does Sample A contain monosaccharides? _________
Note: Disaccharides such as sucrose (table sugar) and lactose (milk sugar) are more
complex than monosaccharides. The Benedict test does not detect disaccharides directly.
Activity A:
Identifying
nutrients
Get the Gizmo ready:
• Click Reset.
• Drag Sample A into the Food sample holder.
Introduction: Most food is composed of three types of molecules: carbohydrates, proteins,
and lipids.
•
Carbohydrates such as starches and sugars are major source of energy....