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Thursday, 27 March 2014

Learning With Ease - Protein Digestion

In Nutrition chapter (Bio F4), we know that 3 food classes need to be digested (carbohydrate, fat, & protein). Exam question would ask you how they are digested, absorbed, & assimilated into the human body

I learnt that most students having difficulties in learning this subtopic. That is because it is learnt organ by organ (mouth - stomach - duodenum - small intestine) which involves a lot of confusing enzymes & processes.

The best way is to learn by food class instead of organs. Hence, today we shall focus on one food class which is protein - specifically, protein digestion. The note is given below for your leisure:

As you can see, this note is much easier to apprehend. Here are the 2 main points you can make out of it:

1. 3 sites are specific for protein digestion - stomach, duodenum, & small intestine.
2. 3 enzymes involved in 'cutting' the substrate from big chunk of protein into tiny-winy amino acids.

Now you know already the 3 enzymes, let's have fun with them:

The 3 enzymes are like 3 best friends - with Pepsin the eldest & Erepsin the youngest. 

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