Enyzme

Question 1

what are enzymes

Answer 1

Catalysts, speeds up chemical reactions

Protein (folded 3o / 4o)

recycled / reused / not consumed

Serves to do a “combines with a substrate”

Function (channel, transporter, activate, inhibit)

Question 2

what is a substrate

Answer 2

A substrate is a molecule that an enzyme reacts with

Question 3

what is an active site

Answer 3

a region on an enzyme that binds to a protein or other substance during a reaction.

Question 4

lock & key model

Answer 4

A second model for enzyme-substrate interaction in which the active site of the enzyme completely fits with the substrate

Question 5

Induced-fit Model:

Answer 5

An enzyme-substrate interaction depicting that both the enzyme and substrate undergo changes to attain an optimal fit

Question 6

factors affecting enzymes

Answer 6

pH, temperature and substrate

Question 7

pH

Answer 7

symmetrical up and down

Question 8

temperature

Answer 8

up and drastic drop to indicate

Question 9

substrate

Answer 9

root function thing, but plateaus

Question 10

State the optimum temperature for enzyme-controlled reactions in the human
body.

Answer 10

anywhere between 36.8 °C and 37 °C

Question 11

Explain what is meant by the term ‘denatured’

Answer 11

The shape of the enzyme is altered; so the substrate can no longer fit; the enzyme can no
longer facilitate reactions

Question 12

Enzymes are biological catalysts that play an important role in the digestive
system. Define a ‘catalyst’.

Answer 12

A substance that increases the rate of a chemical reaction; and is not changed by the reaction