Starter quiz
- Which of these foods are a good source of carbohydrates?
- bread ✓
- carrots
- pasta ✓
- steak
- apples
-
- Match the food group to its use in the body.
- lipids⇔used for energy and insulation ✓
- carbohydrates⇔used as an energy source ✓
- proteins⇔used for growth and repair ✓
What is the name of the process used by plants to make glucose?- 'photosynthesis' ✓
- True or false? Glucose is a sugar.
- True ✓
- False
- What two fuels are needed for aerobic respiration?
- nitrogen
- oxygen ✓
- glucose ✓
- carbon dioxide
- water
-
- Which biological molecules are made from fatty acids and glycerol?
- lipids ✓
- carbohydrates
- proteins
-
Exit quiz
What three elements do carbohydrates contain?- carbon ✓
- nitrogen
- hydrogen ✓
- oxygen ✓
- sulfur
-
- Which of the following are polysaccharides?
- maltose
- cellulose ✓
- glycogen ✓
- starch ✓
- glucose
-
- Which statements about proteins are not true?
- The order of amino acids is coded for by DNA.
- Proteins are polymers.
- Proteins are monomers. ✓
- Proteins are made from amino acids.
- Antibodies are proteins.
-
Which of these is a use for lipids in an organism?- preventing disease
- making cell walls
- making cell membranes ✓
- carrying oxygen
- making enzymes
-
- Organisms are made of carbohydrates, proteins, lipids, ______ and minerals.
- 'water' ✓
- Match the word to its description.
- polymer⇔a molecule made of many repeated units ✓
- sugar⇔the units used to build large carbohydrate molecules ✓
- amino acids⇔the units used to build protein molecules ✓
- glycerol⇔one of two units used to build lipid molecules ✓
- monomer⇔a molecule made of one unit ✓
Worksheet
Loading worksheet ...
Presentation
Loading presentation ...
Video
Lesson Details
Key learning points
- Organisms are made of carbohydrates, proteins and lipids (including fats), plus water and minerals.
- Carbohydrates, proteins and lipids are used to build cell structures including membranes and organelles.
- Carbohydrates are polymers made of sugars.
- Proteins are polymers made of amino acids.
- Lipids are molecules made of fatty acids and glycerol.
Common misconception
Confusion often arises over which monomers are used to build which polymers.
The lesson clearly explores carbohydrates, proteins and lipids as separate sections and covers the monomers and the polymers they form with care and repetition.
Keywords
Polymer - A polymer is a molecule made of many repeated units.
Sugar - Sugars are the units used to build large carbohydrate molecules.
Amino acid - Amino acids are the units used to build protein molecules.
Fatty acid - A fatty acid is one of two units used to build lipid molecules.
Glycerol - Glycerol is one of two units used to build lipid molecules.
+