TOPIC 2//Cell Organisation/ Enzymes/ Food Tests Flashcards
When does Differentiation occur
During the development o multicellular organisms
What is an organ
Group of different tissues
What is an organ system
Group of organs
What are enzymes
Biological catalysts which speed up a chemical reaction without getting used up and are all large proteins
What happens if you raise the temperature of a reaction
This would speed up the useful and the unwanted reactions
What do enzymes reduce the need for
reduce the need for high temperatures so it only speeds up the useful reactions
What is a active site
Every enzyme has an active site with a unique shape that fits onto the substrate
Define Induced fit
The active site changes shape a little as the substrate binds to it to get a tighter fit
What happens when you change Optimum Temperature
Changing the temperature changes the rate of an enzyme catalysed reaction.
What happens if the temp of an enzyme gets too hot
The bonds holding the enzyme together break which changes the shape of the enzyme’s active site so the substrate wont bind onto it anymore
Optimum Ph
Changing the pH changes the rate of an enzyme catalysed reactio
What happens if the pH of the enzyme is too high or low
This bonds holding the enzyme will break which will changes the shape of the active site and denatures the enzyme
What pH do enzymes often work best at
pH 7
Formula for rate of reaction
Rate=1000/time
What are the 3 big molecules
Starch, Proteins and Fats
