What are essential and non-essential amino acids? Give two examples of each type.
Essential amino acids are those that cannot be synthesised by our body and must be provided through our diet. Non-essential amino acids are those which our body can synthesise.
The provided text lists various amino acids such as alanine, cysteine, proline, tryptophan, and lysine, but it does not explicitly classify these specific examples into essential or non-essential categories.
Explanation
The textbook context clearly defines the two categories: essential amino acids are those the body cannot make and must be obtained through food, while non-essential amino acids are those the body can produce. However, the provided text does not categorize the specific amino acids listed (like lysine or alanine) into these two groups. Therefore, specific examples for each type cannot be provided without using external knowledge.
Solution Steps
Step 1: Define essential amino acids using the text: 'cannot be synthesised by our body, hence must be provided through diet.'
Step 2: Define non-essential amino acids using the text: 'those which our body can make.'
Step 3: Search the text for examples of each type. The text lists amino acids (alanine, cysteine, proline, tryptophan, lysine) but does not assign them to the essential or non-essential categories.