Cell respiration HL

Question 1

ATP

Answer 1

adinosine triphosphate
- high energy molecules
- immediate source of power for cell processes

1 molecule of ATP – 3 covalently bonded phosphate groups, which store potential energy in their bonds
when ATP is hydrolysed the energy stored in phosphate bond is released
cell respiration uses organic molecules to regenerate ATP

Question 2

Two key functions of ATP

Answer 2

• functions as the energy currency of the cell by releasing energy when hydrolysed to ADP
• ay trander other released phosphate group to other organic molecules, making them less stable and more reactive

Question 3

ATP synthesised by..

Answer 3

solar energy - photosynthesis converts light energy into chemical energy that is stored as ATP
Oxidative processes - cell respiration breaks down organic molecules to release chemical energy that is stored as ATP

Question 4

what is necessary for cell respiration

Answer 4

redox of electron carriers