Grana & Stroma Thylakoids: Difference & Photosynthesis vs. Respiration

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SUMMARY

The discussion clarifies the distinction between grana and stroma thylakoids in chloroplasts, where grana are defined as stacks of multiple thylakoids. It also establishes that photosynthesis and cellular respiration are opposite processes, supported by their respective chemical equations. Photosynthesis converts carbon dioxide and water into glucose and oxygen using light energy, while respiration breaks down glucose and oxygen to produce carbon dioxide, water, and energy in the form of ATP.

PREREQUISITES
  • Understanding of chloroplast structure and function
  • Knowledge of photosynthesis and cellular respiration processes
  • Familiarity with chemical equations related to biological processes
  • Basic concepts of energy transformation in living organisms
NEXT STEPS
  • Study the structure and function of chloroplasts in detail
  • Explore the light-dependent and light-independent reactions of photosynthesis
  • Investigate the Krebs cycle and its role in cellular respiration
  • Learn about the ATP synthesis process during respiration
USEFUL FOR

Students of biology, educators teaching plant physiology, and researchers interested in metabolic processes will benefit from this discussion.

Persefone
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What is the difference between grana and stroma thylakoids ?
Could you also give me an example showing that photosynthesis is the reverse of respiration ? Thank you
 
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a grana is a stack of multiple thylakoids.

For your second question, just look at the chemical equation for photosynthesis and cell respiration and you'll find that they are almost exact opposites.
Photsynthesis: 6CO2 + 6H2O + LIGHT ENERGY--> C6H12O6 + 6O2
Respiration: C6H12O6 + 6O2--> 6CO2 + 6H2O + ENERGY RELEASED (ATP
 

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