Microbes

Question 1

Oldest fossil

Answer 1

3.5 b.y.o bacteria

Eukaryotes did not appear until 1.7 yrs later

Question 2

Pathogenic

Answer 2

Bacteria that cause disease

Question 3

Viruses

Answer 3

An obligate(restricted to a particular function) , intercellular parasite

Uses host’s cell bio synthetic machinery to make its own proteins

Viruses are not alive ( most biologists argue)

Viruses ONLY have DNA or RNA

Question 4

Bacteria and archaea

Answer 4

Form 2 of the 3 largest branches of tree life

All are unicellular and prokaryotic