SBI3C - Identifying Nutrients GIZMO QUIZ

T/F - 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

green to orange.

• True

• False

T/F - The Lugol test uses iodine to test for starch, a polysaccharide (complex sugar). Iodine turns dark purple in the presence of starch.

• True

• False

T/F - The Biuret test uses a solution of potassium hydroxide and copper sulfate to test for protein. The Biuret solution turns purple when proteins are present.

• True

• False

T/F - The Sudan Red test uses a fat-soluble dye, Sudan Red, to indicate the presence of lipids. When lipids are present, the dye will be absorbed into the lipids, and will appear as concentrated spots of color in the test tube.

• True

• False

Based on the results in the picture above one can conclude that

• The carbohydrates are present but that proteins, lipids and starches are not

• The carbohydrates and lipids are present but that proteins, and starches are not.

• The carbohydrates proteins and lipids are present and starches are not

• That carbohydrates are not present but that lipids, proteins and starches are present

Tags

NGSS.HS-PS1-2

Based on the results in the picture above one can conclude that

• The carbohydrates are present but that proteins, lipids and starches are not

• The carbohydrates and lipids are present but that proteins, and starches are not.

• The lipids and proteins are present and carbohydrates and starches are not

• That carbohydrates are not present but that lipids, proteins and starches are present

Based on the results in the picture above one can conclude that

• The starches are present but that proteins, lipids and carbohydrates are not

• The carbohydrates and lipids are present but that proteins, and starches are not.

• The lipids and proteins are present and carbohydrates and starches are not

• That carbohydrates are not present but that lipids, proteins and starches are present

A sample tested positive for proteins and lipids but negative for starches and carbohydrates. What is the likely food

• steak

• apple

• rice

Samples that are negative for every test are likely to contain _______________________ such as table sugar.

• disaccharides

• monosaccharides

• starches

• proteins

Sample of grains and potatoes products contain _______________

• disaccharides

• monosaccharides

• starches

• proteins