: Explain, in terms of the "lock and key" hypothesis, why amylase cannot digest proteins. [2 marks]
Open your notes and compare your drawing to the original. Note what you missed in a different colour and try again three days later. This "Active Recall" builds much stronger neural paths than rereading ever will. 3. Decode the Marking Schemes Your notes tell you the facts, but the Marking Schemes tell you the "keywords" that actually earn points. Biology-O-Level-Notes.pdf - www.megalecture.com biology o level 5090 notes better
If you are reading this, you have probably already tried the standard approach: highlighting a textbook, copying definitions into a notebook, or downloading a 200-page PDF from a random forum. Yet, when the exam paper is in front of you, the information feels foggy. : Explain, in terms of the "lock and
| Organ | Function | |-------|----------| | Mouth | Teeth (mechanical), amylase (starch → maltose) | | Oesophagus | Peristalsis (wave-like muscle contraction) | | Stomach | Pepsin (protein → peptides), HCl (kills bacteria, denatures protein, activates pepsin) | | Small intestine (duodenum) | Pancreatic amylase, trypsin, lipase; bile (emulsifies fat) | | Small intestine (ileum) | Villi & microvilli → absorption of glucose, amino acids, fatty acids | | Large intestine | Water absorption → faeces formation | This "Active Recall" builds much stronger neural paths
