MDCAT · CHAPTER 3
Biological Molecules
Connect water, carbohydrates, lipids and proteins to the chemical features that make their biological roles possible.
Your study notes
01 / LESSON
Build the explanation.
- Explain why water's polarity and hydrogen bonding matter to life.
- Compare carbohydrate and lipid structures with their storage roles.
- Relate levels of protein structure to biological function and denaturation.
02 / NOTES
The essentials, in one place.
- Water's polarity and hydrogen bonding produce its life-supporting properties.
- Small differences in glucose bonding distinguish storage polysaccharides from cellulose.
- Hydrophobicity makes triglycerides compact stores and phospholipids membrane-formers.
- Protein sequence guides folding, and folding enables function.
03 / ACTIVITY
Test the idea by changing something.
Predict the result first, run the activity, then explain what changed and why.
04 / DIAGRAM
Make the connections visible.
Unequal charge distribution.
Water molecules attract one another.
Cohesion, heat capacity and solvent action.
Transport, temperature stability and metabolism.
Cover the labels, redraw the sequence or comparison, and explain each connection aloud.
See diagrams in the full explanation ↗05 / QUIZ
Retrieve before you reread.
Build a timed test from this chapter’s 100 practice questions. Questions and options are shuffled; missed answers feed your revision notebook.
Original practice items, including related concept variants; not official examination questions.06 / REVISION SHEET
Take the chapter away with you.
A print-friendly sheet brings together the learning targets, key points, concept diagram, written recall prompts and applied MCQs. Add the answer key when you are ready to check.
Print / save the chapter sheet ↗