Matching. Choose the most appropriate letter
1. ___ Thermus aquaticus
2. ___ Cyanidium caldarium
3. ___ Amoeba discoides
4. ___ nanobes
5. ___ proto-cells
6. ___ stromatolites
7. ___ cyanobacteria
8. ___ Bangiomorpha pubescens
9. ___ glaucophyte
A. contain DNA, but may be too small to be
alive
B. simple transitional forms between early
organic compounds and the first living
cells
C. red alga resident of hot springs
D. first organisms with the noncyclic pathway
of photosynthesis
E. source of the heat-resistant enzyme used in
PCR
F. offered support for endosymbiosis
G. dome-shaped fossil remains of
photoautotrophic bacteria (some
nonfossil structures also form.
H. protist with photosynthetic organelles that
resemble cyanobacteria
I. earliest known organism that can be
assigned to a modern group
Answers: 1. E, 2. C, 3. F, 4. A, 5. B, 6. G, 7. D, 8. I, 9. H
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