Stages of respiration

Question 1

Name the stages of respiration in order.

Answer 1

Glycolysis, transition , kreb’s cycle, Electron transport chain.

Question 2

Explain Glycolysis. (respiration)

Answer 2

Occurs in the cytoplasm of cell. Glucose is broken down into pyruvate. 2 f ATP produced and hydrogen which moves to cristae.

Question 3

Explain the transition stage (respiration)

Answer 3

pyruvate enters matrix of mitochondria. CO2is removed, producing acetyl co enzyme A and more hydrogen which moves to the cristae.

Question 4

Explain the krebs cycle (respiration)

Answer 4

Occurs in matrix. Producing CO2 and hydrogen and 2 ATP.

Meanwhile….carrier molecules NADH and FADH2 have picked up hydrogens and transport them to ETC.

Question 5

Explain the electron transport chain

Answer 5

Occurs on cristae of mitochondria. hydrogens are passed along the ETC, releasing 34 ATP. Oxygen is required at this stage and water is produced.