Question

a student wants to try to convince her parents to stop serving peas for dinner. she lays out her argument that peas are high in fructose, which is a type of sugar. which test could she use to provide scientific evidence to support her argument that peas are high in fructose? (1 point) brown paper bag test benedicts test vinegar test iodine test

Explanation:

• Brown paper bag test: Used to detect lipids (fats). When lipids are placed on brown paper, they leave a translucent spot. Since the goal is to test for sugar (fructose), this test is not relevant.
• Benedict’s test: Used to detect reducing sugars. Fructose is a reducing sugar. When Benedict’s reagent (a blue - colored solution containing copper(II) sulfate) is added to a sample with reducing sugar and heated, it changes color (green/yellow/orange/red depending on the sugar concentration).
• Vinegar test: Vinegar is an acid (acetic acid). There is no standard “vinegar test” for detecting sugars in a biological/chemical analysis context related to this problem.
• Iodine test: Used to detect starch. Iodine (in the form of iodine - potassium iodide solution) turns blue - black in the presence of starch. Since we are looking for sugar (not starch), this test is not appropriate.

Answer:

B. Benedict’s test