5.1 Aerobic Respiration

Question 1

define cellular respiration

Answer 1

energy from food molecules and is transferred to ATP

Question 2

give the equation for aerobic respiration

Answer 2

C6H12O6 + 6O2 ——> 6CO2 + 6H2O + ATP

Question 3

how many molecules of ATP are produced per molecule of glucose

Answer 3

32 molecules

Question 4

give 2 properties of ATP

Answer 4

• constantly produced and used within cells as a source of energy for metabolic processes
• produced by respiration in all organisms + photosynthesis in plants

Question 5

what enzyme catalyses the conversion between ATP and ADP

Answer 5

ATPase

Question 6

summarise the process of glycolysis

Answer 6

• occurs in cytoplasm
• does not require O2
• little ATP is produced
• splitting of respiratory substrate begins

Question 7

summarise the process of link reaction

Answer 7

• occurs in the mitochondrial matrix

- moves products of glycolysis into Krebs cycle and electron transport chain

Question 8

summarise the processes of Krebs cycle

Answer 8

• occurs in mitochondrial matrix

- requires oxygen

Question 9

what is the most common hydrogen acceptor in cellular respiration

Answer 9

NAD

Question 10

what is NAD

Answer 10

a coenzyme that assists in enzyme-catalysed reactions

when it accepts hydrogen atoms, it becomes reduced to NADH

Question 11

what is FAD

Answer 11

a hydrogen carrier and coenzyme that accepts hydrogen from NAD to form reduced FAD

Question 12

each time a coenzyme is reduced, what is produced

Answer 12

a molecule of ATP is produced