Tests for nutrients

Which of the following tests for starch?

• Iodine

• Benedict's

• Biuret

• Emulsion

Which of the following tests for protein?

• Iodine

• Benedicts

• Biuret

• Emulsion

When starch is present iodine turns...

• purple

• blue-black

• orange

• brick red

When protein is present Biuret turns...

• purple

• blue-black

• orange

• brick red

A negative test for starch will cause Iodine to stay...

• orange/red

• blue

• black

• brick red

A negative test for protein will cause Biuret to stay...

• brick red

• blue

• black

• orange

A negative test for glucose will cause Benedicts to stay...

• brick red

• blue

• black

• orange

Which chemicals did you mix to test for proteins - biuret test?

• Ethanol and water

• Iodine and potassium permanganate

• Benedicts Solution

• Sodium Hydroxide and Copper Sulphate

The test tubes in the photo represent a negative and positive result for

• Benedict's with glucose

• Biuret with protein

• Iodine with starch

• Ethanol with fat

The building blocks of starch are

• glycerol

• amino acids

• sugars

• fatty acids