Identifying Nutrients
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?
Proteins, lipids, carbohydrates, minerals and vitamins
2. How are these nutrients used by your body?
Nutrients are used by your body for everyday functions.
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?
The liquid turns pink when heated for 5 minutes.
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?
Yes
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. Simple sugars are found in sweets and fruits. Starches are found in potatoes, cereal, pasta, flour, and other plant products. * Proteins are used in body structures such as muscles, skin, and hair. Rich sources of proteins include meats, dairy products, and beans. * Lipids (fats and oils) are used
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?
Proteins, lipids, carbohydrates, minerals and vitamins
2. How are these nutrients used by your body?
Nutrients are used by your body for everyday functions.
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?
The liquid turns pink when heated for 5 minutes.
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?
Yes
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. Simple sugars are found in sweets and fruits. Starches are found in potatoes, cereal, pasta, flour, and other plant products. * Proteins are used in body structures such as muscles, skin, and hair. Rich sources of proteins include meats, dairy products, and beans. * Lipids (fats and oils) are used