enzymes
- Created by: SeherSadiq
- Created on: 21-04-18 10:17
View mindmap
- Enzymes
- Biological catalysts
- Speed up a reaction without being used up themselves
- metabolic rate is the speed of all the reactions in the body added up.
- sped up by enzymes
- made of proteins
- amino acids (similar to a chain) are conensed into a pacman like shape.
- the 'mouth' of the pacman is called the active site.
- the rest of the amino acids are used to produce thuis active site
- the active site acts as a jigsaw piece in which a substrate can fit perfectly into it.
- this reaction is also known as a lock and key hypothesis
- this is an enzyme substrate complex
- the 'mouth' of the pacman is called the active site.
- amino acids (similar to a chain) are conensed into a pacman like shape.
- rate of reaction
- Temperature
- when a low temp the reaction not fast as the amount of kinetic energy is less therefore less movement which means there are less collisions.
- when the temperature does initially increase the rate of reaction increases because there is more kinetic energy which means there are more frequent collisions.
- when enzymes reach their optimum temperature they are at their peak conditions. this means they will complete reactions the quickest
- when the temperature increases too much past the optimum temperature then the enzyme starts to denature meaning the structure of the active site unravels.
- when the enzyme has denatured this means that the substrate can no longer fit in the active site which means overall there will be less frequent collisions.
- pH
- depending on where they are in the body.
- Temperature
- to calculate the rat eof reaction just use 1 over the average time.
- Biological catalysts
Comments
No comments have yet been made