Biochemistry Tests Quiz

What color change indicates the presence of glucose in the Benedict's test?

• Green to blue to yellow

• Yellow to orange to red

• Blue to green to orange or brick red

• Red to blue to green

Which reagent is used in the Fing test for glucose?

• Fing solution A and B

• Iodine solution

• Sudan III reagent

• Millon's reagent

What is the purpose of adding HCl in the sucrose test?

• To precipitate proteins

• To change the color of the solution

• To neutralize the solution

• To hydrolyze sucrose into glucose and fructose

What color indicates the presence of starch in the iodine test?

• Violet

• Orange

• Pink

• Blue-black

Which test uses Millon's reagent to detect proteins?

• Sudan III test

• Xanthoproteic test

• Millon's test

• Biuret test

What color change occurs in the Biuret test for proteins?

• Orange

• Pink

• Blue-black

• Violet

What is the final color change in the Xanthoproteic test for proteins?

• Yellow to orange

• Blue to green

• Pink to red

• Green to yellow

Which test involves the use of ammonia solution to confirm protein presence?

• Xanthoproteic test

• Biuret test

• Sudan III test

• Iodine test

Which reagent is used to test for fats?

• Benedict's reagent

• Iodine solution

• Sudan III

• Fing solution

What indicates the presence of fats in the Sudan III test?

• Blue-black color

• Orange precipitate

• Pink droplets

• Violet solution