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Cornelius van Niel, who, based on his studies demonstrated that photosynthesis is essentially a light-dependent reaction performed his experiments on-
  • a)
    Cladophora
  • b)
    purple and green bacteria
  • c)
    green algae
  • d)
    Non sulphur bacteria 
Correct answer is option 'B'. Can you explain this answer?
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Cornelius van Niel, who, based on his studies demonstrated that photos...
A milestone contribution to the understanding of photosynthesis was that made by a microbiologist, Cornelius van Niel (1897-1985), who, based on his studies of purple and green bacteria, demonstrated that photosynthesis is essentially a light-dependent reaction  
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Cornelius van Niel, who, based on his studies demonstrated that photos...
Introduction to Cornelius van Niel's Experiments
Cornelius van Niel was a prominent microbiologist whose research significantly advanced our understanding of photosynthesis. His experiments, particularly on purple and green bacteria, revealed crucial insights into the light-dependent reactions of this essential biological process.
Choice of Organism: Purple and Green Bacteria
- Van Niel chose purple and green bacteria for his studies due to their unique metabolic characteristics.
- These bacteria are anaerobic and can perform photosynthesis without releasing oxygen, utilizing sulfur instead.
Key Findings from His Experiments
- Van Niel's work demonstrated that photosynthesis is not solely about oxygen production, as was previously thought.
- He formulated the idea that the process of photosynthesis involves converting light energy into chemical energy, using carbon dioxide and hydrogen sources.
- His experiments showed that in purple and green bacteria, the photosynthetic process could occur with hydrogen sulfide (H2S) instead of water, leading to the production of sulfur instead of oxygen.
Impact of His Research
- Van Niel's findings laid the groundwork for understanding the light-dependent reactions of photosynthesis.
- His research challenged existing notions and broadened the comprehension of photosynthetic processes across different organisms.
Conclusion
In summary, Cornelius van Niel's choice to study purple and green bacteria was pivotal in demonstrating that photosynthesis involves light-dependent reactions. His contributions have had lasting effects on the field of microbiology and our understanding of photosynthesis.
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Cornelius van Niel, who, based on his studies demonstrated that photosynthesis is essentially a light-dependent reaction performed his experiments on-a)Cladophorab)purple and green bacteriac)green algaed)Non sulphur bacteriaCorrect answer is option 'B'. Can you explain this answer?
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