Worksheet: Enzymes in Digestion
In this worksheet, we will practice explaining the action and importance of digestive enzymes.
Which group of digestive enzymes break down proteins?
The diagram shows a simplified version of the action of amylase. What subunits is starch broken down into?
- AAmino acids
- DFatty acids
Which of the following best explains how enzymes aid digestion?
- AEnzymes break down large, complex food molecules into smaller ones that can be absorbed.
- BEnzymes slow down the rate of digestion so it does not require too much energy.
- CEnzymes regulate the pH of the digestive system to ensure it remains at the optimum.
- DEnzymes are released by the gallbladder to neutralize stomach acid.
- EEnzymes release energy to aid the physical processes of digestion, such as chewing.
Why are enzymes often included in biological washing powders?
- AEnzymes help prevent the breakdown of clothing fibers, so clothes last longer.
- BEnzymes can reduce the amount of water needed in a washing machine.
- CWashing powders with enzymes smell nicer than washing powders without enzymes.
- DEnzymes can help break down and remove stains caused by food.
Which of the following best explains why carbohydrates and proteins are classified as polymers?
- ABecause there are many copies of carbohydrates and proteins within the human body (poly means many)
- BBecause they are made up of many different large units (monomers)
- CBecause they are joined up to other biological molecules
- DBecause they are made up of many similar small units (monomers)
Which of the following organs does not produce any of the digestive enzymes?
- ASalivary glands
- DSmall intestine
The diagram given shows the basic outline of the human digestive system. The pancreas produces and releases a large amount of digestive enzymes. Which number points to the pancreas on the diagram?
What polymers are formed by the joining of amino acids via peptide bonds?
Which group of digestive enzymes does amylase belong to?
Which biological molecules are formed by the joining of glycerol and fatty acids via covalent bonds?
- ANucleic acids
Which digestive enzyme, produced by the salivary gland and pancreas, helps break down starch?
Which group of digestive enzymes breaks down fats and oils?
The diagram shows a simplified version of protease action. What monomer subunits are proteins broken down into?
- AFatty acids
- DAmino acids
Complete the table to state the correct enzyme, substrate, and product(s).
|Lipase||3||Glycerol and fatty acids|
- A1 = Nucleotides, 2 = Pepsin, 3 = Lipids
- B1 = Nucleotides, 2 = Amylase, 3 = Lipids
- C1 = Amino acids, 2 = Pepsin, 3 = Carbohydrates
- D1 = Amino acids, 2 = Amylase, 3 = Lipids
- E1 = Amino acids, 2 = Pepsin, 3 = Lipids
In what organ of the body is the majority of lipase made?
- ALarge intestine
- ESmall intestine
Which polymers are formed when monosaccharides, e.g., glucose or fructose, join together via glycosidic bonds?
The picture provided shows a 3D model of an enzyme.
What class of biological macromolecule do enzymes belong to?
- BNucleic acids