Respiratory quotients

Question 1

What can be used as respiratory substrates

Answer 1

Carbohydrates, lipids and proteins

Question 2

Which molecules produces the most ATP

Answer 2

Lipids

Question 3

How do some molecules produce more ATP than others

Answer 3

They cause more protons to be available for chemiosmosis during oxidative phosphorylation so more ATP can be synthesised

Question 4

Why do some molecules produce more ATP than others

Answer 4

The respiratory substrates with the most hydrogen atoms generate the most ATP per molecule of substrate

Question 5

What is required the more hydrogen atoms in a respiratory substrate

Answer 5

The more oxygen will be required as their will be more protons that will need to combine with oxygen to form water after chemiosmosis

Question 6

What is the respiratory quotient

Answer 6

Ratio of the volume of carbon dioxide produced to the amount of oxygen used up during respiration in a given time

Question 7

What is the RQ for lipids proteins and carbohydrates

Answer 7

carbohydrates = 1
lipids = 0.7
proteins = 0.8

Question 8

What does calculating the respiratory quotient help us to calculate

Answer 8

The respiratory substrate that is being used during respiration

Question 9

What can be determined if RQ is calculated to be greater than 1

Answer 9

Anaerobic respiration is occurring as more carbon dioxide is being produced than oxygen being consumed