The _______________ are a group of fish thought to be ancestral to amphibians
cartilaginous fish
crossopterygians
ray-finned fish
African lungfish

2. Mitochondria are cellular structures involved in
aerobic respiration
mutualism
photosynthesis
DNA replication

3. The oldest fossil forms of life are most similar to:
animals
modern bacteria
archaebacteria
fungi

4. Bacteria have which of these structures in common with eukaryotes
nucleus
mitochondria
ribosomes
endoplasmic reticulum