AP Bio: Dehydration Synthesis
Name: ______________________________________ Date: ________________________
Student Exploration: Dehydration Synthesis
Vocabulary: carbohydrate, chemical formula, dehydration synthesis, disaccharide, glucose, hydrolysis, monosaccharide, polysaccharide, valence
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. If you exercise on a hot day, you need to worry about dehydration. In this context, what do you think dehydration means? When you are exercising in the heat you will sweat a lot. The sweat is water leaving your body trying to cool you down. If you don’t rehydrate yourself you could become dehydrated.
2. Astronauts and backpackers often bring dehydrated food. What do you think dehydrated food is? Dehydrated food is food that has had all of the water removed from it.
Gizmo Warm-up
What do rice, potatoes, and sugar have in common? They are all foods rich in carbohydrates. Carbohydrates are an important energy source for your body. The basic building block of most carbohydrate compounds is the molecule glucose. Using the Dehydration Synthesis Gizmo™, you will learn about the structure of a glucose molecule and how glucose molecules can be joined together to make larger carbohydrate molecules.
To begin, select the CREATE GLUCOSE tab.
1. Look at the chemical formula for glucose. How many carbon (C), hydrogen (H), and oxygen (O) atoms are found in a molecule of glucose? C:6 H:12 O:6
2. Turn on Show chemical structure. Each black sphere represents a carbon, hydrogen, or oxygen atom. The lines connecting the spheres represent chemical bonds.
A. How many black spheres are in the diagram? 24
B. How does this relate to the number of carbon, hydrogen, and oxygen atoms in the chemical formula for glucose? It is the same number as all of the carbons, hydrogens, and oxygens added up.
|Activity A: |Get the Gizmo ready: |[pic]
Student Exploration: Dehydration Synthesis
Vocabulary: carbohydrate, chemical formula, dehydration synthesis, disaccharide, glucose, hydrolysis, monosaccharide, polysaccharide, valence
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. If you exercise on a hot day, you need to worry about dehydration. In this context, what do you think dehydration means? When you are exercising in the heat you will sweat a lot. The sweat is water leaving your body trying to cool you down. If you don’t rehydrate yourself you could become dehydrated.
2. Astronauts and backpackers often bring dehydrated food. What do you think dehydrated food is? Dehydrated food is food that has had all of the water removed from it.
Gizmo Warm-up
What do rice, potatoes, and sugar have in common? They are all foods rich in carbohydrates. Carbohydrates are an important energy source for your body. The basic building block of most carbohydrate compounds is the molecule glucose. Using the Dehydration Synthesis Gizmo™, you will learn about the structure of a glucose molecule and how glucose molecules can be joined together to make larger carbohydrate molecules.
To begin, select the CREATE GLUCOSE tab.
1. Look at the chemical formula for glucose. How many carbon (C), hydrogen (H), and oxygen (O) atoms are found in a molecule of glucose? C:6 H:12 O:6
2. Turn on Show chemical structure. Each black sphere represents a carbon, hydrogen, or oxygen atom. The lines connecting the spheres represent chemical bonds.
A. How many black spheres are in the diagram? 24
B. How does this relate to the number of carbon, hydrogen, and oxygen atoms in the chemical formula for glucose? It is the same number as all of the carbons, hydrogens, and oxygens added up.
|Activity A: |Get the Gizmo ready: |[pic]