Gizmo Identifying Nutrients
Interactive biology worksheet using Gizmo to explore food nutrients. Students learn how to identify proteins, lipids, and carbohydrates through lab tests like Benedict’s test, and analyze their role in providing energy.
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Gizmos ■■■■■■■■■■■■■■■■■■■■■■■■■
Marne: Dale:
Student Explorationidentifying Nutrients
Directions: Follow the instructions t o g o through the simuiation. Respond t o the questions and
prompts i n the orange boxes.
Vocabulary carbohydrate, d (saccharide, pid. monosaccharide, polysaccharide, protein, starch
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. VWiat are the major types of nutrients you can get from food?
proteins. lipids, and carboiydrates
2. How are these nutrients used by your cody?
these nutrients are used in your body for energy
Gizmo Warm-up
Have you ewer wondeted idial s in your food? Sclent sts Lse a variety of
tests to determine the nutritional content of food. You wi learn four of
those tests with the foenrAtej Mdri&rts Gizmo.
1. Below tbeFood samples lacel, drag tube A tte the Food sample
holder. Below the Bened ict test, click the Test button. 'Aha: i s done
h the Benedict lest?
Tube A maze the Bene: c: test tum orange.
2. The Beneoic l sduton i s a lest for monosaccharides; simpe sugars
Ik e glucose or fructose (fruit sugar); and some disaccharides such
a s lactose and maltose. In contact with these Suga's, the Benedict
solution turns from blue to greet to orange. Fo'simpicrty, w e will
consider tne Benedict test a test for monosaccharides only.
Coes Sample A contain these sugars?
Note: Sucrase (table sugar) s a disaccharide that isntrf detected by the Benedict test. Foods sweetened
only with table sugar will show a negative Benedict test.
Pip-Ml.dir l-:< td.calcnal u » m y . P u b K i - H - r w "ra“ttK. Z I D C £zpoi(L«a-n«ig** M l HQta i t M r . B C
Marne: Dale:
Student Explorationidentifying Nutrients
Directions: Follow the instructions t o g o through the simuiation. Respond t o the questions and
prompts i n the orange boxes.
Vocabulary carbohydrate, d (saccharide, pid. monosaccharide, polysaccharide, protein, starch
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. VWiat are the major types of nutrients you can get from food?
proteins. lipids, and carboiydrates
2. How are these nutrients used by your cody?
these nutrients are used in your body for energy
Gizmo Warm-up
Have you ewer wondeted idial s in your food? Sclent sts Lse a variety of
tests to determine the nutritional content of food. You wi learn four of
those tests with the foenrAtej Mdri&rts Gizmo.
1. Below tbeFood samples lacel, drag tube A tte the Food sample
holder. Below the Bened ict test, click the Test button. 'Aha: i s done
h the Benedict lest?
Tube A maze the Bene: c: test tum orange.
2. The Beneoic l sduton i s a lest for monosaccharides; simpe sugars
Ik e glucose or fructose (fruit sugar); and some disaccharides such
a s lactose and maltose. In contact with these Suga's, the Benedict
solution turns from blue to greet to orange. Fo'simpicrty, w e will
consider tne Benedict test a test for monosaccharides only.
Coes Sample A contain these sugars?
Note: Sucrase (table sugar) s a disaccharide that isntrf detected by the Benedict test. Foods sweetened
only with table sugar will show a negative Benedict test.
Pip-Ml.dir l-:< td.calcnal u » m y . P u b K i - H - r w "ra“ttK. Z I D C £zpoi(L«a-n«ig** M l HQta i t M r . B C
Activity A : GeMhe Gizmo rescy:
■ C ck Reset.
- Drag Sample A i i t o l h e Food sample holder.
Identifying
nutrients
Introduction: lAost food s composec o f throe types of molecules: carbohydrates . proteins and lipids
• Carbohydrates such a s starches and sugars are major source of energy. Simpe sugars are fourd n
sweets and fruits. Starches are found i n potatoes, cereal, pasta, flour, and ctner plan: products.
■ Proteins are used i n bony structures such a s musdes, skn, and hair. Rich sources of proteins n d u d e
meats, da 7 products, and beans
• Lip d s {fatsand oils) are used for energy, insulation, and a s an essential building bock of oels. Meats,
d a 7 products, and oily plants such a s olives are rich i n lipids.
Question: H o w d o you test for carbohydrates, proteins, a n d l i p i d s ?
1. Test: Order the Benedict test, dick Test .
I s tie Benedict test positive id' sample A ? yes
Recal that orange i s a positive test far monosaccharides (and some d saochandes).
2. Test: The Lugol test uses iod ne to lest for starch, a polysaccharide (complex carbohydrate}. Iodine turns
dark purple i m h e presence of staron.
Under Lugol test, dick Test Coes sample A contain starch? no
3. Test The Biuret test uses a solution of cotass urn hydroxide {KOH) and copper sulfate (CuSQJ to test for
protein. The Biuret solution turns purpe when proteins are present
Unde- Biuret test click Test Coes sample A contain proteins? no
4. Test The Sudan Red test uses a fat-solLde dye, Sudan Red, to indicate the presence of lip ds. When licids
are present, the dye will b e absorbed into the lipids, and w l l appear a s concentrated spots of cokx in the
test tube. (No spots ind cates tnat I p i d s a r e not present}
Under Sudan Red test, click Test Does sample A contain lip ds? no
5. Summarize: W a t nutrients does sample A contain?
Sampte A only contars monosaccharide
5. Analyze: What kind of food is sample A most likely to be? {High light the food type) **
A p p e juice Baked beans Oatmeal Scrambled eggs
Pijracucatn r m jzvjcra uaa cny. P . B t atiwirq pnhbitKL Z 2020 I s mJimrg'" AJ n j h n laHTHd
■ C ck Reset.
- Drag Sample A i i t o l h e Food sample holder.
Identifying
nutrients
Introduction: lAost food s composec o f throe types of molecules: carbohydrates . proteins and lipids
• Carbohydrates such a s starches and sugars are major source of energy. Simpe sugars are fourd n
sweets and fruits. Starches are found i n potatoes, cereal, pasta, flour, and ctner plan: products.
■ Proteins are used i n bony structures such a s musdes, skn, and hair. Rich sources of proteins n d u d e
meats, da 7 products, and beans
• Lip d s {fatsand oils) are used for energy, insulation, and a s an essential building bock of oels. Meats,
d a 7 products, and oily plants such a s olives are rich i n lipids.
Question: H o w d o you test for carbohydrates, proteins, a n d l i p i d s ?
1. Test: Order the Benedict test, dick Test .
I s tie Benedict test positive id' sample A ? yes
Recal that orange i s a positive test far monosaccharides (and some d saochandes).
2. Test: The Lugol test uses iod ne to lest for starch, a polysaccharide (complex carbohydrate}. Iodine turns
dark purple i m h e presence of staron.
Under Lugol test, dick Test Coes sample A contain starch? no
3. Test The Biuret test uses a solution of cotass urn hydroxide {KOH) and copper sulfate (CuSQJ to test for
protein. The Biuret solution turns purpe when proteins are present
Unde- Biuret test click Test Coes sample A contain proteins? no
4. Test The Sudan Red test uses a fat-solLde dye, Sudan Red, to indicate the presence of lip ds. When licids
are present, the dye will b e absorbed into the lipids, and w l l appear a s concentrated spots of cokx in the
test tube. (No spots ind cates tnat I p i d s a r e not present}
Under Sudan Red test, click Test Does sample A contain lip ds? no
5. Summarize: W a t nutrients does sample A contain?
Sampte A only contars monosaccharide
5. Analyze: What kind of food is sample A most likely to be? {High light the food type) **
A p p e juice Baked beans Oatmeal Scrambled eggs
Pijracucatn r m jzvjcra uaa cny. P . B t atiwirq pnhbitKL Z 2020 I s mJimrg'" AJ n j h n laHTHd
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