🧠 Step 8 — Student Memory Support
This final section is designed for rapid revision, memory strengthening, and last-day exam preparation. Use it after completing the topic to recall high-yield facts quickly.
🎯 How to Use This Section
- Revise flashcards for quick recall.
- Use mnemonics to remember lists.
- Review memory tables for comparison-based questions.
- Read clinical hooks before exams.
- Mark the topic complete after revision.
🃏 1️⃣ High-Yield Flashcards
Which amino acid is formed from phenylalanine?
Which enzyme converts phenylalanine into tyrosine?
Which cofactor is required for phenylalanine hydroxylase?
Which amino acid is precursor of dopamine and epinephrine?
Which amino acid forms serotonin and melatonin?
Which amino acid acts as the major methyl donor?
What is the active methyl donor formed from methionine?
Which sulphur-containing amino acid forms glutathione?
Which disorder is caused by phenylalanine hydroxylase deficiency?
Which disorder causes black urine on standing?
Which enzyme deficiency causes albinism?
Which disorder is associated with thrombosis and lens dislocation?
🧠 2️⃣ Mnemonics
Mnemonic Title:
Tyrosine Products
Mnemonic Word: “Do Not Eat Mud”
Meaning:
- D → Dopamine
- N → Norepinephrine
- E → Epinephrine
- M → Melanin
Mnemonic Title:
Tryptophan Products
Mnemonic Word: “SMiLe”
Meaning:
- S → Serotonin
- M → Melatonin
- L → Niacin-like pathway
Mnemonic Title:
Homocystinuria Features
Mnemonic Word: “THL”
Meaning:
- T → Thrombosis
- H → High homocysteine
- L → Lens dislocation
Mnemonic Title:
PKU Features
Mnemonic Word: “Musty PKU”
Meaning:
- Musty urine odor
- Phenylalanine accumulation
-
Intellectual disability
📋 3️⃣ Memory Tables
Table 1 — Aromatic Amino Acids
| Amino Acid | Major Products | Important Disorder |
|---|---|---|
| Phenylalanine | Tyrosine | PKU |
| Tyrosine | Catecholamines, Melanin | Alkaptonuria, Albinism |
| Tryptophan | Serotonin, Melatonin | Hartnup disease |
Table 2 — Sulphur Amino Acids
| Amino Acid | Main Function | Important Disorder |
|---|---|---|
| Methionine | Methyl donor | Homocystinuria |
| Cysteine | Glutathione formation | Cystinuria |
⚡ 4️⃣ Rapid Revision Points
Must Remember:
• Phenylalanine converts into tyrosine.
• BH₄ is required for phenylalanine hydroxylase.
• Tyrosine forms catecholamines and melanin.
• Tryptophan forms serotonin and melatonin.
• Methionine forms SAM.
• Cysteine contains sulfhydryl group.
• PKU causes intellectual disability.
• Alkaptonuria causes black urine.
• Albinism results from tyrosinase deficiency.
• Homocystinuria increases thrombosis risk.
• Glutathione requires cysteine.
• Urea cycle detoxifies ammonia.
🩺 5️⃣ Clinical Memory Hooks
Clinical Hook:
PKU → Phenylalanine accumulation → Intellectual disability
Clinical Hook:
Alkaptonuria → Homogentisic acid accumulation → Black urine
Clinical Hook:
Albinism → Tyrosinase deficiency → Reduced melanin
Clinical Hook:
Homocystinuria → Elevated homocysteine → Thrombosis
Clinical Hook:
Hyperammonemia → Urea cycle defect → Encephalopathy