Topic 7 Run For Your Life

Question 1

What does ATP consist of

Answer 1

1. Base: adenine
2. Sugar: Ribose
3. Three inorganic phosphates: Pi

Question 2

What is Substrate level phosphorylation

Answer 2

Energy released during a reaction is used directly in the synthesis of ATP

Question 3

What is electron transfer (oxidative phosphorylation)

Answer 3

Kinetic energy from the movement of electrons from one molecule to another is used to synthesise ATP

Question 4

Hydrolysis

Answer 4

Splitting by reacting with H20

Question 5

Why do we need to transfer chemical energy from glucose molecules to ATP molecules

Answer 5

ATP stores a small usable amount of energy, released when ATP is hydrolysed

Therefore, less energy is lost.

ATP is soluble and small, meaning it can diffuse quickly to where it is needed

Question 6

Respiration

Answer 6

The OXIDATION of glucose. Energy is released from glucose molecules, much of which is used to synthesise ATP.

Takes place in all cells of all organisms

Question 7

What life process does energy supply? (5)

Answer 7

Growth and Repair: cells and tissues : building larger molecules from smaller ones

Active Transport: moving substances against a concentration gradient

Movement: Within cells, tissue, whole organs

Temperature: warm blooded animals need to maintain a constant body temp

Metabolism: all reactions that take place within organisms require energy.