MDCAT · CHAPTER 2
Bioenergetics
Trace carbon, electrons and energy through glycolysis, the link reaction, the Krebs cycle and oxidative phosphorylation.
Your study notes
01 / LESSON
Build the explanation.
- Locate each stage of aerobic respiration in a eukaryotic cell.
- Track the different roles of ATP, NADH, FADH₂ and oxygen.
- Explain chemiosmosis and the reduced yield of anaerobic pathways.
02 / NOTES
The essentials, in one place.
- Glycolysis supplies pyruvate, a little ATP and reduced NAD.
- The Krebs cycle mainly loads electron carriers.
- Electron transport builds the proton gradient used by ATP synthase.
- Fermentation regenerates NAD so glycolysis can continue without oxygen.
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.
ATP activates a six-carbon sugar.
One six-carbon molecule becomes two three-carbon units.
Electrons reduce NAD to NADH.
ATP forms and two pyruvate remain.
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 ↗