Question

Compare and contrast between respiration and breathing. [ 4 marks]

Answer 1

S.no.	Breathing	Respiration
1	It is a physical process.	It is a biochemical process.
2	Breathing forms the initial step of respiration.	Initially breathing occurs then oxidation of food occurs to release energy in the form of ATP.
3	It is an extra cellular process means occurs outside the cell.	It is an intracellular process means it occurs inside the cell.
4	It simply involves taking in air, inspiration and giving out air, expiration.	It involves inspiration, glycolysis, oxidative decarboxylation,kreb cycle and oxidative phosphorylation. Finally carbon dioxide is evolved out by expiration
5	It does not require any energy	Several steps require energy in the form of ATP
6	It doesnot require any enzymes or coenzymes.	It requires various enzymes and coenzymes