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

Unlock Energy Efficiency Heat Loss in Cells!

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

Table of content

Heat Loss in Organisms 🔥

  • Autotrophs (plants) and Heterotrophs (animals) both lose heat to the environment.
  • Why? When organisms convert chemical energy (like when they eat food or use stored energy), some of it turns into heat through processes like cell respiration.
  • Think of it like a car: no matter how good the engine, there’s always some energy that gets lost as heat instead of turning those wheels!

Sunlight’s Role ☀️

  • Energy enters ecosystems as sunlight.
  • Plants act like nature’s solar panels by transforming this sunlight into chemical energy via photosynthesis.
  • Example: 🌻 Sunflowers soak up the sun and turn that energy into yummy sunflower seeds.

Food Chain Flow 🍔

  • This chemical energy doesn’t stay in one place! It moves along food chains and reaches decomposers.
  • Example: Lettuce 🥬 gets eaten by a rabbit 🐇, which then gets eaten by a fox 🦊. But whatever the fox doesn't finish gets decomposed by nature's cleanup crew!

Why Do Organisms Produce Heat? 🔥

  • Birds & Mammals: Sometimes, they produce extra heat to maintain a steady body temperature, just like how we shiver when cold!
  • Other Organisms: They generate heat as a by-product of their activity.
  • Cell Respiration: The big heater! Most of the heat in living organisms comes from this.

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

Theme C - Interaction & Interdependence

Unlock Energy Efficiency Heat Loss in Cells!

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

Table of content

Heat Loss in Organisms 🔥

  • Autotrophs (plants) and Heterotrophs (animals) both lose heat to the environment.
  • Why? When organisms convert chemical energy (like when they eat food or use stored energy), some of it turns into heat through processes like cell respiration.
  • Think of it like a car: no matter how good the engine, there’s always some energy that gets lost as heat instead of turning those wheels!

Sunlight’s Role ☀️

  • Energy enters ecosystems as sunlight.
  • Plants act like nature’s solar panels by transforming this sunlight into chemical energy via photosynthesis.
  • Example: 🌻 Sunflowers soak up the sun and turn that energy into yummy sunflower seeds.

Food Chain Flow 🍔

  • This chemical energy doesn’t stay in one place! It moves along food chains and reaches decomposers.
  • Example: Lettuce 🥬 gets eaten by a rabbit 🐇, which then gets eaten by a fox 🦊. But whatever the fox doesn't finish gets decomposed by nature's cleanup crew!

Why Do Organisms Produce Heat? 🔥

  • Birds & Mammals: Sometimes, they produce extra heat to maintain a steady body temperature, just like how we shiver when cold!
  • Other Organisms: They generate heat as a by-product of their activity.
  • Cell Respiration: The big heater! Most of the heat in living organisms comes from this.

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 🌟