Mnemonic 1 — TCA Cycle Intermediates (8 in order)

"Can I Keep Selling Succulent Fruits Making Oranges"

• Citrate → Isocitrate → alpha-Ketoglutarate → Succinyl CoA → Succinate → Fumarate → Malate → Oxaloacetate

Mnemonic 2 — ETS Complex Order

"No Stupid Cow Crosses Openly"

• NADH dehydrogenase (Complex I) → Succinate dehydrogenase (Complex II) → Cytochrome bc1 (Complex III) → Cytochrome c oxidase (Complex IV) → Oxygen (final acceptor)
• Mobile carriers: Ubiquinone (CoQ) between I/II and III; Cytochrome c between III and IV

Mnemonic 3 — ATP Yield Quick Count ("2-2-6-2" Rule)

• Glycolysis: 2 ATP + 2 NADH
• Link reaction: 2 NADH
• TCA: 6 NADH + 2 $FADH_{2}$ + 2 GTP
• Convert: 10 NADH × 3 = 30 + 2 $FADH_{2}$ × 2 = 4 + 2 GTP + 2 ATP = 38 total

Mnemonic 4 — RQ Values ("CFP Rule")

• Carbohydrates = 1.0 (C for Complete; gases equal)
• Fats = 0.7 (F for "Fat needs more $O_{2}$")
• Proteins = 0.8 (between C and F)
• Organic Acids > 1.0 (A for "Already oxidised — less $O_{2}$ needed")

Mnemonic 5 — Products of Fermentation

• "Yeast Eats Carbon, Muscles Latch on"
• Yeast → Ethanol + C$O_{2}$; Muscles → Lactic acid (lactate)

Mnemonic 6 — Cofactors of Pyruvate Dehydrogenase Complex

"The NAke CoA"

• TPP (thiamine pyrophosphate) — from vitamin $B_{1}$
• NA$D^{+}$ (electron acceptor)
• CoA (coenzyme A — carries acetyl group)

Mnemonic 7 — NADH vs $FADH_{2}$ ATP Yield

"NADH-3, FADH2-2" → "N3, F2"

• NADH = 3 ATP (enters at Complex I = 1, remember: 1×3 = 3)
• F$ADH_{2}$ = 2 ATP (enters at Complex II = 2, remember: 2×1 = 2, i.e., one less)

Mnemonic 8 — Location Sequence

"Cells Must Try Everything"

• Cytoplasm (Glycolysis) → Matrix (Link reaction + TCA) → Thylakoid... no, wrong chapter! → ETS (Inner membrane)