Scientists have found y containing fossilized cyanobacteria (blue-green algae). They show that life has been present on the
Earth from early ages. Oparin and Haldane were two scientists who hypothesized that life needed reducing environments Initially to
appear. The ocean in the early ages was
(devoid of oxygen) and acidic.

How does the fermentation of pyruvic acid in cells contribute to the formation of atp? a. it completes the oxidation of glucose to co2, creating atp. b. it generates lactic acid, which cycles back through the krebs cycle, producing 2 atp molecules. c. it converts fadh2 to phosphate, which bonds with adp. d. it produces 2 nad+ molecules, which cycle back to fuel the glycolysis reaction, allowing 2 atp molecules to be produced.