B2 Food Tests

Which of the following tests for starch?

• Iodine Solution

• Benedict's Solution

• Biuret Solution

• Ethanol

Which of the following tests for protein?

• Iodine Solution

• Benedict's Solution

• Biuret Solution

• Ethanol

When protein is present Biuret turns...

• purple

• blue-black

• orange

• blue

When reducing sugar (glucose) is present Benedict's turns...

• purple

• blue-black

• brick-red

• green

In a negative test for starch, what colour will iodine solution be?

• yellow-brown

• blue

• black

• blue-black

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

• brick red

• blue

• black

• yellow

If you drop iodine solution on bread, it changes to Black. What does this show?

• Bread contains protein

• Bread contains sugar

• Bread contains starch

• Bread contains lipids?

How do you test for lipids?

• By using Ethanol and water

• By using Benedicts solution

• By using Iodine solution

• By using Biuret test

The building blocks of proteins are

• carbohydrates

• amino acids

• sugars

• fatty acids

Tags

NGSS.HS-LS1-6

Which test requires heat?

• Benedicts
• Biuret
• Iodine

Tags

NGSS.HS-PS3-4