enzymes 2

Question 1

at low temp how does the rate of reaction go

Answer 1

slow rate of reaction
movements are slower
less kinetic energy
less collisions between the enzymes and substrate

Question 2

at optimum temp how does the rate of reaction go

Answer 2

maximum rate
more energy
enzyme activity increases

Question 3

at high temp how does the rate of reaction go

Answer 3

decreasing rate
denatured due to increased kinetic energy
active site changed
substrate cannot enter active site
reaction slows and stops

Question 4

at low concentration of enzymes how does the rate of reaction go

Answer 4

slow rate of reaction
afew enzymes to collide
few enzyme-substrate complexes will form

Question 5

at high concentration of enzymes how does the rate of reaction go

Answer 5

higher rate of reaction
more enzymes to collide
more reactions

Question 6

at very high concentration of enzymes how does the rate of reaction go

Answer 6

rate of reaction levels off
as many enzymes as substrate molecules
active sites are filled

Question 7

at low pH how does the rate of reaction go

Answer 7

slow rate of reaction
bonds are distorted
active site is not the correct shape
substrate does not fit

Question 8

at optimum pH how does the rate of reaction go

Answer 8

high rate of reaction
enzymes active site works best
reactions work best

Question 9

at higher then optimum pH hoe does the rate of reaction go

Answer 9

slow rate of reaction
bonds are distorted
active site not the correct shape
substrate doesnt fit into active site

Question 10

how can enzymes be denatured

Answer 10

to strong ph of high temp

Question 11

where does protease work best

Answer 11

in the stomach works best in acid whilst amylase prefers neutral conditions

Question 12

what are inhibitors ccea

Answer 12

are molecules that fit into active site but arnt broken down

Question 13

describe denaturation

Answer 13

there increasingly at levels above the optimum there a irrevesible change to the shape of the active site that stops enzyme actiomn

Question 14

Give two factors that affect the rate of enzyme activity

Answer 14

ph
temperature
enzyme concentration

Question 15

at low temperatures is the rate slow or fast for enzymes and why

Answer 15

slow because the molecules have little energy not many collisions between the enzyme and substrate

Question 16

whats the optimum temperature for human enzymes

Answer 16

37 degress

Question 17

what are enzymes

Answer 17

biological catalysts made up of protein they speed up reactions without being used up themselves