Biologists suspect that endosymbiosis gave rise to mitochondria before plastids partly because
A) the products of photosynthesis could not be metabolized without mitochondrial enzymes.
B) all eukaryotes have mitochondria (or their remnants), whereas many eukaryotes do not have plastids.
C) mitochondrial DNA is less similar to prokaryotic DNA than is plastid DNA.
D) without mitochondrial CO2 production, photosynthesis could not occur.
E) mitochondrial proteins are synthesized on cytosolic ribosomes, whereas plastids utilize their own ribosomes.
Comparison of chemiosmosis in mitochondria and chloroplasts.
Mitochondria known as power house of the cell
Difference spectra of mitochondria
Shuttles for transfer of reducing equivalents from cytosol into mitochondria
The Rise and Fall of Separation Anxiety
Mitochondria