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Questions and Answers
What is the main purpose of photosynthesis?
What is the main purpose of photosynthesis?
What are the end products of oxygenic photosynthesis?
What are the end products of oxygenic photosynthesis?
Which organisms are called photoautotrophs?
Which organisms are called photoautotrophs?
What is produced as a byproduct in anoxygenic photosynthesis using bacteriochlorophyll?
What is produced as a byproduct in anoxygenic photosynthesis using bacteriochlorophyll?
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What is the main function of retinal and its microbial rhodopsin derivatives in non-carbon-fixing anoxygenic photosynthesis?
What is the main function of retinal and its microbial rhodopsin derivatives in non-carbon-fixing anoxygenic photosynthesis?
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Study Notes
Photosynthesis and its Significance
- Photosynthesis is a process used by cellular organisms to convert light energy into chemical energy.
- It is a biological process that produces organic compounds used for cellular respiration.
- Oxygenic photosynthesis refers to the production of oxygen as a byproduct.
- Carbohydrate molecules such as sugars, starch, and cellulose are synthesized from carbon dioxide and water during photosynthesis.
- Most plants, algae, and cyanobacteria are photoautotrophs that perform photosynthesis.
- Photosynthesis is responsible for maintaining the oxygen content of the Earth's atmosphere.
- It supplies the biological energy necessary for complex life on Earth.
- Some bacteria perform anoxygenic photosynthesis, using bacteriochlorophyll to split hydrogen sulfide as a reductant.
- These bacteria produce sulfur as a byproduct instead of oxygen.
- Archaea such as Halobacterium perform a type of non-carbon-fixing anoxygenic photosynthesis using retinal and microbial rhodopsin derivatives to absorb green light and synthesize ATP.
- Anoxygenic photosynthesis does not produce oxygen as a byproduct.
- Photosynthesis plays a crucial role in the ecosystem by providing energy for life processes and maintaining atmospheric oxygen levels.
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Description
Test your knowledge of the biological process used by cellular organisms to convert light energy into chemical energy, which is essential for sustaining life on Earth.
