factor affecting enzymes

HideShow resource information
what happens when enzymes temperature rises to its optimum?
the higher the temperature, more kinetic energy is produced meaning more sucessful collisons as molecules are moving faster
1 of 12
what happens if the temerature goes above the optimum?
the moldecules vibrate too much breaking the hydrogen and ionic bonds, changing the shape of the active site meaning the substrate no longers is compliementary so this denatures the enzyme
2 of 12
for enzymes to work best they have to be at the optimum PH- what happens if it goes above or below there optimum PH?
it distrupts the on the hydrogen and ionic bonds within the molecul, changing the shape of the active site,so the no longer fits the substrate, denaturing the enzyme
3 of 12
what happens when you increase the enzyme concentration
more active site are avalable to catalyse with the substrates so a quciker reaction. when all the substartes are used it stops the reaction
4 of 12
what happens when you increase the concentration of the substrates
more substrates to react with the enzymes when all the enzymes are saturated the reaction rate remains the same
5 of 12
what is the definition of a cofactor and why is it essential to enzumes ?
simple molecules or ions that help enzymes react at an appropriate rate. It is essential to enzymes as it increases the rate of a controlled reaction- allow the enzyme-substrate complex to form more easily.
6 of 12
what is the definition of conzymes and why are they essential to enzymes?
Conzymes- small, organic, non protein molecules that bind for a short period of time to the active site. They are essential as they act as carriers of chemicals, moving them in groups to other enzymes- participate in the reaction changes.
7 of 12
name 3 differences between competative and non competative inhibitation
competative- similar shape to substarte,competes with the substrate to bind to active site, higher concentration more it inhibits.Non ceompetative- binds away from enzyme, causes active site to change, increasing concentartion make no difference
8 of 12
what makes the inhibitor irriverable?
strong,convalent bonds- cant move easily
9 of 12
whats make inhibitors reversable?
weka hydrogen and ion bonds, can be removed easily
10 of 12
true or false: Some medical drugs work by inhabiting the activity of the enzyme.
true
11 of 12
what does potassium cyanide do to the body?
it non competative and is involved in oxidation and stops aerobic respirationso prganism can only respire one way anaerbic builds up latic acid which is toxic
12 of 12

Other cards in this set

Card 2

Front

what happens if the temerature goes above the optimum?

Back

the moldecules vibrate too much breaking the hydrogen and ionic bonds, changing the shape of the active site meaning the substrate no longers is compliementary so this denatures the enzyme

Card 3

Front

for enzymes to work best they have to be at the optimum PH- what happens if it goes above or below there optimum PH?

Back

Preview of the front of card 3

Card 4

Front

what happens when you increase the enzyme concentration

Back

Preview of the front of card 4

Card 5

Front

what happens when you increase the concentration of the substrates

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Cellular processes resources »