Enzymes

Question 1

what are enzymes

Answer 1

-biological catalyses for in and out the cell
-have a specific tertiary structure for a complementary substrate

Question 2

Explain the induced fit model

Answer 2

-shape of active site is not directly proportional to the substrate
-this puts strain on the substrate bonds, lowering the activation energy

Question 3

what is it called when an enzyme works outside and inside the cell

Answer 3

extracelluar and intracellular

Question 4

what controls the shape of the enzyme

Answer 4

tertiary structure

Question 5

what 5 factors can affect enzyme activity

Answer 5

-temperature
-pH
-substrate concentration
-enzyme concentration
-enzyme inhibitors

Question 6

why is there less enzyme activity if the temperature is too low

Answer 6

not enough kinetic energy for successful collisions between the enzyme and substrates

Question 7

why is there less enzyme activity if the temperature is too hot

Answer 7

it would denature so would change the shape of the active site, breaks ionic and hydrogen bonds in the tertiary structure of the enzyme

Question 8

how does pH affect enzyme activity

Answer 8

disrupt the Ionic and hydrogen bond in the tertiary structure, therefore the enzyme becomes denatured and changes shape

Question 9

how does substrate concentration affect enzyme activity

Answer 9

high concentration of substrates means that there are more reactions, however there is a “saturation point”, this is when all the enzyme active sites are full