(a)[1]
On Fig. 6.1, use arrows to indicate the path followed by oxygen from the cytoplasm into the mitochondrial matrix.
(b)[7]
Identify protein D and the group of proteins shown as A, B and C, then describe their functions in oxidative phosphorylation.
(c)[3]
The matrix of a mitochondrion contains small circular DNA. In human cells, mitochondria contain circular DNA with 37 genes. Suggest functions for these mitochondrial genes.