How to Memorize Glycolysis Steps
To memorize glycolysis steps, cut the 10 steps into two phases of five: an energy investment phase that spends 2 ATP and splits glucose in half, and a payoff phase that makes 4 ATP and 2 NADH. Learn the molecules with one mnemonic and the enzymes with a second, attach the ATP and NADH to the exact steps where they happen, then write the pathway from memory until it's automatic.
If you can list the first four steps and then the whole thing goes fuzzy, FlashDeck turns your glycolysis notes into one card per step and shows you the shaky ones again tomorrow: Build my study plan.
Two phases: the easiest way into the glycolysis pathway
Glycolysis happens in the cytoplasm and turns one glucose (6 carbons) into two pyruvate (3 carbons each). Thinking in two halves makes the 10 steps far less scary.
Phase 1: Investment (steps 1 to 5)
You spend energy to make glucose easier to break.
- Glucose → glucose-6-phosphate (hexokinase). Uses 1 ATP.
- Glucose-6-phosphate → fructose-6-phosphate (phosphoglucose isomerase).
- Fructose-6-phosphate → fructose-1,6-bisphosphate (phosphofructokinase-1, PFK-1). Uses 1 ATP.
- Fructose-1,6-bisphosphate → DHAP + glyceraldehyde-3-phosphate (aldolase). The 6-carbon sugar splits into two 3-carbon pieces.
- DHAP → glyceraldehyde-3-phosphate (triose phosphate isomerase). Now you have two G3P.
Phase 2: Payoff (steps 6 to 10), happens twice
Everything from here happens twice per glucose, once for each G3P.
- G3P → 1,3-bisphosphoglycerate (glyceraldehyde-3-phosphate dehydrogenase). Makes NADH.
- 1,3-bisphosphoglycerate → 3-phosphoglycerate (phosphoglycerate kinase). Makes ATP.
- 3-phosphoglycerate → 2-phosphoglycerate (phosphoglycerate mutase).
- 2-phosphoglycerate → phosphoenolpyruvate, PEP (enolase). Releases water.
- PEP → pyruvate (pyruvate kinase). Makes ATP.
That's the full list of the steps of glycolysis. Read it once, then put it away. The rest of this guide is about getting it out of your head without looking.
Mnemonic for the ten steps
Two mnemonics, one for molecules and one for enzymes. Learn the molecule one first.
Molecules (11 of them, glucose to pyruvate)
Goodness Gracious, Father Franklin Did Go By Picking Pumpkins (to) Prepare Pies
Glucose, Glucose-6-P, Fructose-6-P, Fructose-1,6-BP, DHAP, Glyceraldehyde-3-P, 1,3-BPG, 3-PG, 2-PG, PEP, Pyruvate.
Enzymes (10 of them)
Hungry Peter Pan And The Growling Pink Panther Eat Pies
Hexokinase, Phosphoglucose isomerase, Phosphofructokinase, Aldolase, Triose phosphate isomerase, Glyceraldehyde-3-P dehydrogenase, Phosphoglycerate kinase, Phosphoglycerate mutase, Enolase, Pyruvate kinase.
Name patterns that help
- Kinase moves a phosphate to or from ATP. Every ATP spent or made in glycolysis happens at a kinase step (1, 3, 7, 10).
- Isomerase rearranges a molecule without adding anything (2, 5).
- Mutase moves a phosphate within the same molecule (8).
- Dehydrogenase takes electrons and makes NADH (6).
If you know what the word means, you can often guess what the step does.
Cards for enzymes and products
Now the tricky part. Between molecules, enzymes, ATP steps and the NADH step, there are 30-plus separate facts, and the ones in the middle (steps 6 to 9) are where most students' recall falls apart. You can't tell which ones you've actually mastered by rereading the list.
Cards worth making
- "Glycolysis step 3 enzyme?" → Phosphofructokinase-1
- "Which step makes NADH?" → Step 6 (G3P → 1,3-BPG)
- "Which enzymes make ATP in glycolysis?" → Phosphoglycerate kinase and pyruvate kinase
- "What does aldolase split fructose-1,6-bisphosphate into?" → DHAP and G3P
- "Which step releases water?" → Step 9 (enolase)
- "Where does glycolysis happen?" → Cytoplasm
- "Which three steps are irreversible?" → 1, 3 and 10 (hexokinase, PFK-1, pyruvate kinase)
Make reverse cards for the enzymes, too: "PEP → pyruvate is catalyzed by?" and "Pyruvate kinase converts what to what?"
FlashDeck does the sorting you can't do by eye. Paste your glycolysis notes or upload your slides as a PDF, and it writes one card per fact from exactly what you pasted. Each day it shows only the cards that are due. Missed "which step makes NADH?" It's back tomorrow. Knew it? It waits a day, then three days, then a week. Build my study plan
Net ATP: the number every steps of glycolysis quiz asks for
| ATP | NADH | Pyruvate | |
|---|---|---|---|
| Investment phase | −2 | 0 | 0 |
| Payoff phase (×2) | +4 | +2 | +2 |
| Net per glucose | +2 | +2 | 2 |
How to remember it
- "Spend 2, make 4, keep 2."
- The payoff happens twice because there are two G3P after the split. That's why you get 4 ATP, not 2.
- The NADH comes only from step 6, once per G3P, so 2 per glucose.
Drill: how to memorize glycolysis steps quickly
A five-minute daily drill beats an hour of rereading.
- Blank page. Write "Glucose" at the top and "2 Pyruvate" at the bottom.
- Fill in the 11 molecules using the first mnemonic.
- Write an enzyme on each arrow using the second.
- Mark ATP in, ATP out and NADH at the right steps.
- Draw a line between step 5 and step 6 and label the two phases.
- Check and circle every miss. Those are tomorrow's first cards.
After a few days, try it backward: start at pyruvate and work up to glucose. If you can go both ways, you really know the glycolysis pathway.
Structures, if your course needs them
For how to memorize glycolysis structures, add one structure a day after the names are solid. Focus on what changes at each step: a phosphate added, a ring opened, a molecule split. The changes are easier to remember than whole drawings.
Connect it to what comes next
Glycolysis ends at pyruvate, which becomes acetyl-CoA and enters the next pathway. How to memorize the Krebs cycle uses the same two-mnemonic approach. If you're also learning cell structure, how to memorize cell organelles explains where each stage happens.
Know all 10 glycolysis steps by test day
You have the two phases, two mnemonics, the net ATP table and a daily drill. Paste your notes into FlashDeck and in the next minute you'll have a card for every step and enzyme, then about 10 minutes a day reviewing only what's due.
FAQ
What is the easiest way to memorize 10 steps of glycolysis?
Split them into an investment phase (steps 1 to 5) and a payoff phase (steps 6 to 10). Use "Goodness Gracious, Father Franklin Did Go By Picking Pumpkins to Prepare Pies" for the molecules. Then write the pathway from memory daily until it's quick. That's how to memorize glycolysis steps in a way that survives the exam.
Is there a mnemonic for glycolysis enzymes?
Yes: "Hungry Peter Pan And The Growling Pink Panther Eat Pies" gives hexokinase, phosphoglucose isomerase, phosphofructokinase, aldolase, triose phosphate isomerase, G3P dehydrogenase, phosphoglycerate kinase, phosphoglycerate mutase, enolase and pyruvate kinase.
What is the net ATP from glycolysis?
Glycolysis spends 2 ATP and makes 4, for a net of 2 ATP per glucose. It also makes 2 NADH and 2 pyruvate. The payoff doubles because the 6-carbon sugar is split into two 3-carbon molecules.
Do I need to list the steps of glycolysis for AP Bio?
It depends on your teacher. Many AP Biology courses focus on inputs, outputs, location and energy totals rather than every step. Check your study guide before you spend time on enzyme names.
How do I remember glycolysis steps for a biochem exam?
Learn molecules first, then enzymes, then energy steps, and use the kinase/isomerase/mutase/dehydrogenase patterns to guess what each step does. Review small cards daily so the middle steps don't fade before the test.