Biology HL
Biology HL
4
Chapters
553
Notes
Theme A - Unity & diversity
Theme A - Unity & diversity
Theme B - Form & Function
Theme B - Form & Function
Theme C - Interaction &  Interdependence
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Theme D - Continuity & Change
IB Resources
Theme C - Interaction &  Interdependence
Biology HL
Biology HL

Theme C - Interaction & Interdependence

Unlocking Rubisco Key to Carbon Fixation

Word Count Emoji
407 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

Quick overview 🚀

  • All organisms that do photosynthesis rely on carbon dioxide (CO2).
  • Carbon fixation? It's like the bodyguard that stops CO2 from leaving the photosynthesizing party.
  • Star of the show? Rubisco! This enzyme turns CO2 into a fancier compound.

Carbon dioxide (CO2) - the star ingredient

  • 🌍 Real-world example: Imagine CO2 is like the pop singer everyone wants at their party. It's in the atmosphere and enters cells when needed. But, it can also make a quick exit!
  • CO2 moves easily: dissolves in water ➡️ passes through cell walls and membranes ➡️ enters the cell.

Carbon fixation - the bouncer of the party

  • Why's it called "fixation"? Because it stops CO2 from leaving the cell. Think of it as a VIP tag that ensures CO2 stays in the party.
  • Main event: CO2 turns into a complex compound. This isn't just any reaction – it's like the "Oscar-winning movie" of all chemical reactions in organisms.

The venue

  • Happens in the stroma (like the dance floor of our cell party). The stroma is the liquid that surrounds thylakoids in the chloroplast.
  • End Product: A trendy three-carbon dance move named glycerate 3-phosphate.

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IB Resources
Theme C - Interaction &  Interdependence
Biology HL
Biology HL

Theme C - Interaction & Interdependence

Unlocking Rubisco Key to Carbon Fixation

Word Count Emoji
407 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

Quick overview 🚀

  • All organisms that do photosynthesis rely on carbon dioxide (CO2).
  • Carbon fixation? It's like the bodyguard that stops CO2 from leaving the photosynthesizing party.
  • Star of the show? Rubisco! This enzyme turns CO2 into a fancier compound.

Carbon dioxide (CO2) - the star ingredient

  • 🌍 Real-world example: Imagine CO2 is like the pop singer everyone wants at their party. It's in the atmosphere and enters cells when needed. But, it can also make a quick exit!
  • CO2 moves easily: dissolves in water ➡️ passes through cell walls and membranes ➡️ enters the cell.

Carbon fixation - the bouncer of the party

  • Why's it called "fixation"? Because it stops CO2 from leaving the cell. Think of it as a VIP tag that ensures CO2 stays in the party.
  • Main event: CO2 turns into a complex compound. This isn't just any reaction – it's like the "Oscar-winning movie" of all chemical reactions in organisms.

The venue

  • Happens in the stroma (like the dance floor of our cell party). The stroma is the liquid that surrounds thylakoids in the chloroplast.
  • End Product: A trendy three-carbon dance move named glycerate 3-phosphate.

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology HL. Subscribe now and get closer to that 45 🌟