C 1.1 Enzymes and Metabolism

Question 1

enzyme ending

Answer 1

-ase

Question 2

anabolism

Answer 2

synthesis of complex molecules from simpler molecules
(condensation reaction)

Question 3

catabolism

Answer 3

breakdown of complex molecules into simpler molecules
(hydrolisis)

Question 4

EVERY reaction in a living organism is catalyzed by an enzyme! how?

Answer 4

by increasing the rate of reaction by lowering activation energy

Question 5

describe enzymes

Answer 5

globular protein
has an active site where the substrate binds for catalysis (specific to substrate)

Question 6

induced fit model

Answer 6

1. substrate induces the active site of the enzyme to change shape so that there is an optimal fit between the substrate and active site
2. enzyme-substrate complex is formed
3. Catalysis occurs, product formed

Question 7

substrate-active site collisions in enzyme catalysis

Answer 7

larger substrate molecules or enzymes can be immobilized resulting in increased stability, durability, and efficiency

Question 8

Relationship between active site structure and enzyme-substrate specificity

Answer 8

the active site is similar to the shape of the enzyme, but adjusts to fit it perfectly once the complex has been made

Question 9

Relationship between active site structure and denaturation

Answer 9

When an enzyme is denatured, the active site specificity changes, so that it can no longer bind to substrates

Question 10

Catalase

Answer 10

Breaks down H2O2 to 2H2O + O2, killing bacteira. That’s why hydrogen peroxide is added to open wounds.