5- Enzymes

Question 1

Describe a catalyst

Answer 1

catalyst as a substance that increases
the rate of a chemical reaction and is not
changed by the reaction

Question 2

Describe enzyme

Answer 2

as proteins that are involved
in all metabolic reactions, where they function as
biological catalysts

Question 3

Describe why enzymes are important in all living organisms

Answer 3

Enzymes help keep the rate of reaction at the rate necessary to sustain life

Question 4

Lang M - small m-fuzyme

Question 5

Explain enzyme action

Answer 5

The substrate has a complementary shape to the active site of an enzyme
The substrate binds to the enzyme creating an enzyme- substrate complex
Enzyme changes the substrate into a new product, which breaks cuway from the enzyme

Question 6

Explain the effect for change in temp, and ph

Answer 6

Low temp
lOW Kinetic Energy
Rare collision of substrate with enzyme
Very few products formed
Optimum TemP
incuesed Ke
more frequent collision with more energy
move substrate molecules colide
more product
High temp
enzyme looses shape of active sit
active site is no longer complemer shape to substrate
tess (no) product formed

Ph

when an enzyme is denatured, the shape of its active site changes so it cannot catalyse the move reactionan