Chapter 2 / 7 short lessons
Biological molecules
Use molecular bonds and shape to explain storage, support, membranes and proteins.
H2 Biology / 9477 / 2027 syllabus
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Starch and cellulose both contain glucose. Why are their properties different?
Lessons
0 of 7 marked as readGlucose isomers and glycosidic bonds
Describe alpha/beta glucose and condensation or hydrolysis of glycosidic bonds.
About 6 minStarch, glycogen and cellulose
Relate polysaccharide bonds and branching to their roles.
About 7 minTriglycerides and phospholipids
Relate glycerol/fatty-acid chemistry and ester bonds to lipid properties.
About 6 minFrom amino acids to a folded protein
Explain amino acids, peptide bonds and four levels of protein structure.
About 7 minWhy temperature and pH alter proteins
Explain environmental effects on protein shape and interactions.
About 5 minHaemoglobin: a globular protein that carries oxygen
Describe the molecular structure of haemoglobin and relate it to oxygen transport.
About 7 minCollagen: a fibrous protein built for strength
Describe the molecular structure of collagen and relate it to its structural role.
About 7 minWhat you will be able to do
- Connect monomers, bonds and polymers.
- Explain protein folding and denaturation.
- Make precise structure-function comparisons.
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