His Initials Look Like My Pretty Tiny TV
Essential Amino Acids
NEETAIIMSClass 11Class 12
Items to Memorize
- Histidine
- Isoleucine
- Leucine
- Lysine
- Methionine
- Phenylalanine
- Threonine
- Tryptophan
- Valine
Mnemonic Tricks
How It Maps
| Cue | Maps To |
|---|---|
| His | Histidine |
| I(nitials) | Isoleucine |
| L(ook) | Leucine |
| L(ike) | Lysine |
| M(y) | Methionine |
| P(retty) | Phenylalanine |
| T(iny) | Threonine |
| T(V) | Tryptophan |
| V | Valine |
Why It Sticks
Short, visual, and easy to say out loud — picture someone's initials on a tiny TV screen. The double-L and double-T mirror the amino acid pairs that start with the same letter.
Frequently Asked Questions
How many essential amino acids are there?
There are 9 essential amino acids that the human body cannot synthesize and must obtain from diet: Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan, and Valine.
Why are they called 'essential'?
They are called essential because the body cannot make them on its own — they must come from food. All other amino acids (non-essential) can be synthesized internally from other molecules.
What foods contain all essential amino acids?
Complete proteins containing all 9 are found in eggs, meat, fish, dairy, quinoa, and soy. These are called complete protein sources. Most plant proteins are incomplete and should be combined.
Are essential amino acids important for NEET?
Yes, they appear in NEET Biology under biomolecules and nutrition. Questions often ask you to identify essential vs non-essential amino acids, or to list all nine.