Does Anyone have any tips on helping me learn about enzymes??

  • 1 vote

I am really confused on enzymes in the digestive system can anyone help me PLEASE???

Posted Tue 24th May, 2011 @ 20:07 by Lizzie Rodulson

4 Answers

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Just think about a lock and key. Enzymes are specific to its substrate also u must know enzymes have a temp and pH that they work best at (Optimum). its like if its snowing outside you wont do any work because u want to go out and same as its too hot. For enzymes if its too hot they change shape ( Denature) so they can no longer fit thier substrate this is the same for pH. Each optimum is different for each enzyme. 

pardon the spelling im in yr 11 nd cant really spell :) 

Answered Tue 24th May, 2011 @ 20:27 by Ebenezer
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Hi i dont know whether you mean at GCSE or A Level but Ebenezer basically summed up the contents of enzymes for GCSE, additional information would be that they are proteins and therefore have a specialised sequence of amino acids in the primary and consequently their tertiary structure and that because of their specialised structure they have a very specific shape and therefore there has to be a complementary shaped substrate for them to form an enzyme-substrate complex. They are biological catalysts and speed up reactions by lowering the activation energy needed to begin the reaction. They can also have non-competitive and competitive inhibitors which affect their ability to form the correct enzyme-substrate complexes and consequently they're functionanility is decreased. They are are also used to break down molecules. e.g in the stomach and there are three types needed to be known for digestion, carbohydrases - carbohydrate break down, lipases - lipid break down and proteases - protein break down. Theres probs something else i forgotten :S anyways if its GCSE's youre referring to, scrap that haha. beth **

Answered Tue 24th May, 2011 @ 21:03 by Bethan Harris
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K try to remember it like this...If you  are fat then you have lipo-suction and lipase enzymes break down fatty foods

Carbohydrase break down carbohydrates

Protease break down proteins

Remember enzymes don't die ! They denature !

Answered Tue 24th May, 2011 @ 21:22 by lbennetts
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I made a video on it on here, but its basically showing the enzyme as a CD cover and the substrate as a CD : http://getrevising.co.uk/resources/how_enzymes_work2 

Hope this helps Lizzie :)

Answered Thu 26th May, 2011 @ 07:45 by Sara