The evolution of organisms that use oxygen in their respiration was possible only because of the action of a group of bacteria that produced oxygen and changed the Earth's atmosphere from an anoxic one to one rich in oxygen. That group of bacteria was:
A. cyanobacteria
B. proteobacteria
C. spirochaetes
D. Staphylococcus
E. actinobacteria
Answer: A
Biology & Microbiology
You might also like to view...
The ________ serves as structural support, in tissue organization, and as a permeability barrier.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
The growth of bacterial cultures is best described as
A) arithmetic growth. B) lag growth. C) logarithmic growth. D) cell division. E) replication.
Biology & Microbiology
Which of the following is needed directly to produce both triose phosphates and RuBP?
A. Rubisco B. NADPH C. ATP D. O2 E. PSII
Biology & Microbiology
Genetic counselors gather medical and family histories in order to construct a(n) ____________________, which will enable them to establish the inheritance of a genetic trait in a family
Fill in the blank(s) with correct word
Biology & Microbiology