Benedict's Test for Sugars Quiz

What is the primary purpose of Benedict's test?

• To detect the presence of proteins

• To measure pH levels

• To test for the presence of lipids

• To identify reducing sugars

Which of the following is a reducing sugar?

• Starch

• Glucose

• Fructose

• Sucrose

What is the role of free anomeric carbons in Benedict's test?

• They stabilize the reagent

• They reduce cupric salts to cupro salts

• They act as a catalyst

• They provide color to the solution

Which component of Benedict's reagent acts as a chelating agent?

• Distilled water

• Sodium citrate

• Copper sulfate

• Sodium carbonate

What is the role of sodium carbonate in Benedict's reagent?

• To provide acidic conditions

• To act as a reducing agent

• To provide alkaline conditions

• To stabilize the solution

What color change indicates a positive Benedict's test?

• Red to blue

• Yellow to brick red

• Green to yellow

• Blue to green

What is the first step in performing Benedict's test?

• Observe the color change

• Neutralize the solution

• Boil the reagent

• Add the test sample

How can non-reducing sugars be tested using Benedict's test?

• By directly adding them to the reagent

• By hydrolyzing them with a dilute acid

• By mixing them with sodium carbonate

• By heating them with copper sulfate

What is the clinical significance of Benedict's test?

• It measures cholesterol levels

• It helps diagnose diabetes by detecting glucose in urine

• It identifies vitamin deficiencies

• It is used to detect proteins in blood

What is glycosuria?

• Presence of glucose in blood

• Presence of glucose in urine

• Absence of glucose in blood

• Absence of glucose in urine