Cyanobacteria Are Believed to Generate the Majority of Oxygen Gas

question 13

Multiple Choice

Cyanobacteria are believed to generate the majority of oxygen gas in Earth's atmosphere. What allows them to produce oxygen?

• A) photosynthesis in which H₂S is the electron source
• B) photosynthesis in which water photolysis produces H⁺, e^-, and O₂
• C) bacteriorhodopsin-based photosynthesis
• D) being near the surface of a pond where more oxygen is available
• E) possession of a variety of chlorophylls to absorb a wide range of wavelengths of light

---

Definitions:

Long Run Deficit

A fiscal situation where a government consistently spends more than it earns over an extended period, leading to sustained budget deficits.

Nominal Wages

The wages that are paid to employees without adjustment for inflation, representing the dollar amount of the pay before considering purchasing power.

Real Incomes

The purchasing power of an individual's or group's income, considering the effects of inflation on buying power.