Metabolism

Question 1

Kinetic energy

Answer 1

associated with motion (movement)

- heat (thermal energy) - random movement of atoms or molecules

Question 2

Potential energy

Answer 2

energy possessed by matter due to a location or structure

- chemical energy -available for chemical reaction (carbohydrates, fats & proteins)

Question 3

Gibbs free energy

Answer 3

the amount of energy capable of doing work during a reaction at constant temperature and pressure

Question 4

Exogenic

Answer 4

chemical reaction where the change in the free energy is negative (there is a net release of free energy)

Question 5

Endergonic

Answer 5

change in the free energy is positive (energy is used). requires free energy to proceed.

Question 6

Oxidation-reduction reactions

Answer 6

Electrons (also with H+) are transferred in a series of reactions from energy yielding compounds eventually to oxygen – form water and release ATP

Question 7

Oxidised

Answer 7

gains oxygen or loses electrons

Question 8

Reduced

Answer 8

loses oxygen or gains electrons

Question 9

metabolic pathways

Answer 9

groups of biochemical reactions that occur in a
progression from beginning to the end.
Compounds formed = intermediates

Question 10

Anabolic pathways

Answer 10

use energy- where small, simpler compounds to build larger, more complex molecules.

• Keep body functioning, support normal growth & development

Question 11

Catabolic

Answer 11

release energy by breaking down complex molecules into simpler compounds

Question 12

cellular respiration

Answer 12

The process by which food energy is converted to ATP energy.

Carbohydrates (glucose) are the main source. 1 glucose produces 30-32 or 36 -38 ATP