Digestion

What molecules are the building blocks of proteins?

• sugar

• amino acids

• glycerol

• fatty acids

Tags

NGSS.HS-LS1-1

Which chemical test is used to detect the presence of glucose in food?

• Benedicts solution

• Iodine solution

• Ethanol

• Biuret's solution

The digestion of which food molecule by enzymes begins in the mouth?

• Sugar

• Starch

• Protein

• Fat

What is an active site?

• The part of a substrate that binds to an enzyme

• The region of an enzyme that binds to the substrate

• A biological catalyst

The enzyme amylase breaks down which food chemical?

• starch

• protein

• amino acid

• lipids

Tags

NGSS.MS-LS1-7

Which is a function of bile?

• Bile contains a mixture of digestive enzymes

• Bile emulsifies lipids

• Bile contains hydrochloric acid to provide the optimum pH for pepsin activity

In which direction do arteries carry blood?

• Towards the heart

• Away from the heart

Which of these is an adaptation of a vein?

• Thick muscular walls

• One way valves

• Elastic walls

What are the smallest vessels which carry blood called?

• Veins

• Tubes

• Arteries

• Capillaries

Where does the left ventricle pump blood to?

• The rest of the body

• Right atrium

• Lungs

• Left atrium