7.3

Question 1

Give the balanced symbol equation for respiration

Answer 1

C6H12O6 + 6O2 -> 6CO2 + 6H2O + 38ATP

Question 2

In respiration, there are two ways ATP can be produced via phosphorylation: substrate-level phosphorylation and oxidative phosphorylation. Give a description of both of these terms.

Answer 2

Substrate level - ADP + phosphorylated intermediate (in glycolysis)
Oxidative - ADP + Pi (in ETC)

Question 3

Draw a labelled diagram of the mitochondria

Answer 3

• double membrane
• wiggly cristae, with inner “cytoplasm” as matrix
• dots in matrix are ribosomes and lipid droplets
• singular loop of DNA

Question 4

Give the adaptations of the mitochondria for enabling respiration

Answer 4

Double membrane, inner layer has many folds so high surface area for more respiration at one time
Small loop of DNA to make needed proteins quicker