enzymes

Question 1

whats a catalyst

Answer 1

substance used to speed up a reaction without being used up or changed

Question 2

enzymes are ________ made by ________ _____ which speed up or ________ the rate of ________ reactions

Answer 2

proteins, living cells, catalyse, chemical

Question 3

enzymes are involved in ________ reactions and break down _______ molecules to ________ ones or build them up

Answer 3

metallic, bigger, smaller

Question 4

what are enzymes made up of and how can they do their job effectively

Answer 4

chains of amino acids and they can fold into unique shapes

Question 5

when an enzyme snd substate combine what does it make

Answer 5

enzyme substrate complex

Question 6

what model can show enzymes and substrates and active sites

Answer 6

lock and key model

Question 7

how does the increased temperature increase rate of reaction

Answer 7

enzymes and substrates gain more energy so they can move more so more collisions occur so more chance of them finding correct shape and forming enzyme substrate complex

Question 8

what happens to the enzyme if its too hot or pH too high or low

Answer 8

some of the bonds can break (be interfered) so the active site changes so the substrate no longer fits and the enzyme is denatured which goes the same for the pH

Question 9

usual optimum pH for enzymes

Answer 9

7