Which of the Following Statements Most Accurately Describes the Evolution

question 35

Multiple Choice

Which of the following statements most accurately describes the evolution of chloroplasts?

• A) Chloroplasts evolved independently in all three domains
• B) Chloroplasts evolved in the Archaea
• C) Chloroplasts evolved in Eukarya
• D) Chloroplasts evolved from a common ancestor of Proteobacteria

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Definitions:

Rubisco

The common name of ribulose bisphosphate carboxylase/oxygenase, the enzyme that catalyzes the fixation of carbon dioxide in the Calvin cycle.

PGA

The term PGA could refer to multiple concepts depending on context; if related to biology, it often stands for Phosphoglyceric acid, a 3-carbon molecule formed in the Calvin cycle of photosynthesis.

Light Compensation Point

The light intensity level at which the rate of photosynthesis equals the rate of respiration, leading to no net gain of energy by the plant.

Photosynthesis

The process by which green plants and some other organisms use sunlight to synthesize foods with carbon dioxide and water, producing oxygen as a byproduct.