Enzymes

Question 1

what is a catalyst

Answer 1

(INCREASE RATE OF REACTION) a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change

Question 2

what is an enxyme

Answer 2

a long chain of amino acid (globular protein in tertiary structure)

Question 3

active site

Answer 3

area of an enzyme, a small region on the enzyme where subtrate binds to, so that the reaction takes place

Question 4

what are enzymes

Answer 4

substrace specifict (ENZYME-SUBSTRACE COMPLEX)

Question 5

two theories of enzyme binding to substrate

Answer 5

• Lock and key (active side and substrate are complementary in shape_
• Induced fit (active site is flexible and enzyme changes slightly to math the active site )

Question 6

what are factors that effect enzyme activity

Answer 6

• temperatuyre
• pH
• substrate concentration

Question 7

what does enzyme catalysis involve

Answer 7

molecular motion (kinetic energy) and the collision of the substrates with the active site

Question 8

draw graphs for the effect of temperature, pH and substrate concentration

Question 9

how are enzymes used in immobilized industry

Answer 9

• enzymes need to be used repeatedly
• inventions needed to trap enzymes in place
• can be held in pace by calcium alginate; enzymes are trapped in the pores and are said to be immobilized

Question 10

how are enzymes used to produce lactose free milk

Answer 10

• lactase enzyme molecules trapped in alginate beads where the milk is sifted through (LACTOSE HAS BEEN PREDIGESTED BY LACTASE ENZYMES)
• milk is hydrolyzed after