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Questions and Answers
What is the oldest and most common form of photosynthesis?
Which metabolic pathway for photosynthesis is an adaptation for photosynthesis in arid conditions?
What reducing agent is suggested to have been used by the first photosynthetic organisms?
When did available evidence from geobiological studies indicate that life existed?
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Which scientist first published about the process of photosynthesis in 1779?
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What is the primary source of hydrogen and electrons used in photosynthesis?
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Which metabolic pathway for photosynthesis incorporates CO2 into four-carbon compounds before the Calvin cycle?
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What is the primary adaptation of CAM plants for photosynthesis?
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At what age are fossils of filamentous photosynthetic organisms dated, based on recent studies of photosynthesis?
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Which scientist discovered the process of photosynthesis and first published about it in 1779?
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Study Notes
Photosynthesis Overview
- The oldest and most common form of photosynthesis is oxygenic photosynthesis.
Adaptations for Arid Conditions
- The Crassulacean acid metabolism (CAM) pathway is an adaptation for photosynthesis in arid conditions.
Early Photosynthesis
- The first photosynthetic organisms likely used ferredoxin as the reducing agent.
- Geobiological studies indicate that life existed at least 3.5 billion years ago.
History of Photosynthesis Discovery
- Joseph Priestley first published about the process of photosynthesis in 1779.
Photosynthesis Mechanism
- The primary source of hydrogen and electrons used in photosynthesis is water.
CO2 Incorporation
- The C4 pathway incorporates CO2 into four-carbon compounds before the Calvin cycle.
CAM Plants
- The primary adaptation of CAM plants for photosynthesis is the ability to open their stomata at night and store CO2, reducing water loss.
Fossil Record
- Fossils of filamentous photosynthetic organisms have been dated to around 1.2 billion years ago, based on recent studies of photosynthesis.
Discovery of Photosynthesis
- Joseph Priestley discovered the process of photosynthesis and first published about it in 1779.
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Description
Test your knowledge of the evolution of photosynthesis with this quiz. Explore the origins and development of this vital biological process, and learn about key figures such as Jan Ingenhousz.
