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 A - Unity & diversity
Biology HL
Biology HL

Theme A - Unity & diversity

Unlock Cell Differentiation Secrets!

Word Count Emoji
417 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

What's going on in multicellular organisms?

  • Multicellular Organisms: Think of them as a big family where everyone has a special role! Cells in multicellular organisms can develop differently to perform various functions.
  • Specialized Cells: Like family members specializing in cooking or driving, cells develop specific features to carry out specific tasks.
  • Efficiency: By only producing what they need, specialized cells are like a chef who only buys groceries for the meal they're planning to make. It's way more efficient!

A spotlight on red blood cells 🚗💨

  • Red Blood Cells (RBCs): Imagine them as tiny cars carrying oxygen to different parts of the body.
  • Haemoglobin: This protein is like the fuel in the car, helping the RBCs transport oxygen.
  • Smart Production: RBCs are smart; they only make haemoglobin and avoid making unnecessary things.

What's common in all cells? 🏠

  • Housekeeping Genes: These are like the chores everyone has to do at home. Roughly 4,000 genes are active in all human cells, keeping the basic functions running.
  • Specialized Roles: These genes don't bother with specialized tasks, just like how you wouldn't ask a toddler to mow the lawn!

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IB Resources
Theme A - Unity & diversity
Biology HL
Biology HL

Theme A - Unity & diversity

Unlock Cell Differentiation Secrets!

Word Count Emoji
417 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

What's going on in multicellular organisms?

  • Multicellular Organisms: Think of them as a big family where everyone has a special role! Cells in multicellular organisms can develop differently to perform various functions.
  • Specialized Cells: Like family members specializing in cooking or driving, cells develop specific features to carry out specific tasks.
  • Efficiency: By only producing what they need, specialized cells are like a chef who only buys groceries for the meal they're planning to make. It's way more efficient!

A spotlight on red blood cells 🚗💨

  • Red Blood Cells (RBCs): Imagine them as tiny cars carrying oxygen to different parts of the body.
  • Haemoglobin: This protein is like the fuel in the car, helping the RBCs transport oxygen.
  • Smart Production: RBCs are smart; they only make haemoglobin and avoid making unnecessary things.

What's common in all cells? 🏠

  • Housekeeping Genes: These are like the chores everyone has to do at home. Roughly 4,000 genes are active in all human cells, keeping the basic functions running.
  • Specialized Roles: These genes don't bother with specialized tasks, just like how you wouldn't ask a toddler to mow the lawn!

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 🌟