Enzymes Key Words 1

Question 1

Catalyst

Answer 1

Molecule which increases the rate of reaction by lowering the activation energy, without being used up.

Question 2

Active site

Answer 2

Enzyme area with shape complementary to specific substrate, allows enzyme binding to substrate with specificity

Question 3

Substrate

Answer 3

Substance used, or acted on, by another process or substance.

Question 4

Product

Answer 4

Substance formed from an enzyme-substrate complex

Question 5

Extracellular enzymes

Answer 5

Enzymes which are produced and then secreted

Question 6

Intracellular enzymes

Answer 6

Enzymes which are produced and retained

Question 7

Activation energy

Answer 7

Energy required to initiate a reaction

Question 8

Lock and key model

Answer 8

Specific substrate with complementary shape to enzyme binds to active site of an enzyme

Question 9

Induced-fit hypothesis

Answer 9

Enzyme active site modified by substrate binding

Question 10

Enzyme-substrate complex

Answer 10

Complex formed when substrate is bound to enzyme active site