Energy & Enzymes

Question 1

Is how organisms obtain & use energy
All chemical reactions that keep an organism alive

2 types: catabolic and anabolic reactions

Answer 1

Metabolism

Question 2

Tear & breakdown molecules
Release energy
Digestion of organic molecules

Answer 2

Catabolic reactions

Question 3

Build up molecules
Uses energy
Building proteins, storing energy

Answer 3

Anabolic reactions

Question 4

Get energy from chemical reactions from sunlight or chemicals

Answer 4

Autotrophs

Ex: photosynthesis

Question 5

Get energy for chemical reactions by eating or absorbing food (organic molecules)

Answer 5

Heterotrophs

Question 6

Substrate = reaction

Substrate enter reactive site, enzyme/substrate complex forms, substrate is converted to products & products leave active site of enzyme

Answer 6

How enzymes work

Question 7

Helpers/adapters improve fit of the substrate in to the active site.

Cofactors ex: vitamins, NADH, FAD, coenzyme A

Answer 7

Enzymes & cofactors

Question 8

Competing for the active site with substrate

Switch off enzymes

Answer 8

Competitive inhibition

Question 9

Binds to the site (allosteric) & changes shape of active site

Switching enzymes off

Answer 9

Noncompetitive inhibition

Question 10

Allosteric interactions

Answer 10

Switch on enzymes