7. Cellular Respiration

Question 1

Substrate-level Phosphorylation

Answer 1

Hydrolysis of a phosphorylated organic molecule + the addition of a phosphate group to ADP –> forms ATP

Question 2

Oxidative Phosphorylation

Answer 2

Chemical energy of organic molecules transferred to electron carriers, transports electrons released to the respiratory e transport chain to final e acceptor (oxygen if aerobic)

Question 3

Oxidation

Answer 3

molecule loses electron

Question 4

Reduction

Answer 4

molecule gains electron

more chemical energy than oxidised form

Question 5

Cellular respiration in Bacteria

Answer 5

Takes place in cytoplasm and plasma membrane

Question 6

Passing electrons

Answer 6

can only passed from molecules with higher to lower Potential Energies

Question 7

Glycolysis

Answer 7

Glucose is partially broken down to make pyruvate and energy is transferred to ATP and reduced electron carriers
Takes place in Cytoplasm
Anaerobic

Question 8

Pyruvate Oxidation

Answer 8

Pyruvate is oxidised to acetyl-coA, producing reduced electron carriers and releasing CO2.
Takes place in Mitochondria

Question 9

Where is H+ conc. the highest in e- transport chain?

Answer 9

Intermembrane Space

Question 10

Activators and Inhibitors of PFK

Answer 10

Activators: ADP and AMP
Inhibitors: Citrate and ATP (when high enough volumes)