IB Biology new syllabus (First assessment 2025)
Standard level (SL)
Theme B: Form and Function
B.1: Molecules
B.1.2: Proteins

00:00 Intro
00:10 Generalized structure of an amino acid
01:41 Condensation reactions forming dipeptides and longer chains of amino acids
03:11 Dietary requirements for amino acids
04:12 Vegan, vegetarian, and plantbased diets
05:18 Collagen, vitamin C, and scurvy
06:12 Infinite variety of possible peptide chains
07:33 Living organisms synthesize many different proteins with a wide range of functions
9:55 Effect of pH and temperature on protein structure
10:24 Protein denaturation
12:30 Optimum pH and temperature depend on the protein and organism