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Biology Revision

Biology Revision:
How do we tell if a substrate is competitive or non-competitive?
Increase concentration of substrate. If rate of reaction increases as substrate increases then the
inhibitor used was competitive, if not non-competitive. This is because by adding more substrate you
decrease the chance of an enzyme forming an enzyme substrate complex rather than attaching to an
inhibitor and not reacting. More substrate= less chance of binding to a competitive inhibitor.
Why do we store energy as lipids and not starch?
Lipids/ fats release more energy than the same amount of carbohydrate when hydrolysed.