Enzymes and digestion Flashcards
what are enzymes
biological catalysts that speed up a chemical reaction without being used up. They are globular proteins- have tertiary structures-3D complex shape, soluble. Have more hydrophyllic groups on outside
What is metabolism
The total of all chemical reactions and organism need to survive.
what is the reaction of metabolism
metabolism= anabolism+catabolism
what is anabolism
the buildup of chemical substances such as photosynthesis and protein synthesis
what is catabolism
the breakdown of substances of chemical substances such as respiration and digestion.
how do enzymes work
enzymes have an active site which has a specific shape which the substrate binds to.The active site shape is determined by the teritiary structure. The enzyme’s active site and substarey must be complimentary or else reaction won’t catalyse.If substrate collides sucessfully with active site it will form an enzyme substrate complex. This binds the reactants together and stresses covalant bonds allowing reaction to occur.
how do we get enzymes with different enzyme shapes
because they have different DNA sequencing- different 3D shape.
what does anabolic result in
2 substrates-1 product
what does catabolic reaction result in
1 substate-2 products
Where is an active site on
ALWAYS ON AN ENZYME.
how does a product form into products
enzyme’s active site and substare must collide sucessfully to form an enzymes substrate complex. active site molds around the substarte- tensiosn on bonds break- products formed.
what is activation energy
A certain amount of energy needs to be supplied to the chemicals before the reaction will start-often provided as heat
what are intracellular enzymes
enzymes that work inside the cells that made them
what extracellular enzymes
made in cell but released outside cell.
