Year 10 - Science
Biological molecules
Biological molecules and enzymes
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit explores the roles of sugars, amino acids, and fatty acids in the synthesis and breakdown of biological molecules. It covers enzyme action, transport in organisms, hypothesis development, and data interpretation. Emphasis is on planning experiments and presenting explanations.
Lesson Summary
You will learn to describe carbohydrates, proteins and lipids as biological molecules and what they are made of.
Key Notes
- 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.
Vocabulary To Learn
- 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.
Common Mistakes To Avoid
- Confusion often arises over which monomers are used to build which polymers.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key 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.
2. Define this scientific word and use it in context. 'polymer'
A polymer is a molecule made of many repeated units. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Confusion often arises over which monomers are used to build which polymers. Correction: The lesson clearly explores carbohydrates, proteins and lipids as separate sections and covers the monomers and the polymers they form with care and repetition.
More Lessons In This Unit
- Effects of substrate concentration and temperature on rate of enzyme activity Study Guide
- Enzymes: function, structure and specificity Study Guide
- Explaining effects of substrate concentration and temperature on enzyme rate Study Guide
- Obtaining the elements needed to make biological molecules Study Guide
- Tests for biological molecules Study Guide
- The effect of pH on the rate of an enzyme reaction: data analysis Study Guide
- The effect of pH on the rate of an enzyme reaction: plan Study Guide
- The effect of pH on the rate of an enzyme reaction: practical Study Guide
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