What molecules are the building blocks of proteins?
Amino acids
Fatty acids
Sugars
Which chemical test is used to detect the presence of glucose in food?
Benedict's test
Iodine test
Sudan III test
Which chemical test is used to detect the presence of protein in food?
Biuret test
The digestion of which food molecule by enzymes begins in the mouth?
Glucose
Protein
Starch
What are the products of the breakdown of lipids by lipase?
Fatty acids and glycerol
Which of these is the major region of the gut where lipids are broken down?
Mouth
Stomach
Small intestine
What is the main function of the small intestine?
Absorption of digested food molecules
The breakdown of starch into maltose
The absorption of water from the gut
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?
Lipids
Which of these statements is true of enzyme activity?
Enzyme activity depends on the number of collisions between the enzyme and substrate
Most enzymes are not sensitive to temperature
Extremes of pH are unlikely to denature an enzyme