6 min read
Why re-reading your notes doesn't work
Highlighting feels like studying, but recognition isn't recall. A look at the retrieval-practice research and how to restructure a study session around questions instead of passes.
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01 — Understand
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You asked
Why does the Krebs cycle need oxygen if oxygen isn't used in any of its steps?
Socrate
Because it depends on NAD⁺ being regenerated. The electron transport chain recycles NADH back into NAD⁺, and that chain only runs when oxygen is there to accept electrons at the end.
p. 142 · §6.3p. 147 · Fig. 6.9
02 — Practice
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Socrate turns your material into questions drawn from what you uploaded. Answering them is how knowledge sticks, and every wrong answer shows you exactly where to look next.
Question 3 of 10Chapter 6
Where in the cell does the Krebs cycle take place?
- ACytoplasm
- BMitochondrial matrixCorrect
- CInner mitochondrial membrane
- DNucleus
03 — Revise
Notes worth revising from.
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Cellular respiration
Notes · PDFGlycolysis
Glucose → 2 pyruvate in the cytoplasm. Net yield of 2 ATP and 2 NADH.
Krebs cycle
Runs in the mitochondrial matrix. Produces NADH and FADH₂ for the electron transport chain.
Electron transport chain
Oxygen is the final electron acceptor. This step produces most of the ATP.
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