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 B - Form & Function
Biology HL
Biology HL

Theme B - Form & Function

Key Differences Obligate Anaerobes, Facultative Anaerobes & Obligate Aerobes

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

Table of content

Welcome to the wild world of oxygen-loving and oxygen-hating organisms! Let's take a breath and dive in. 🎈

The big picture 🌟

Not all organisms share the same love story with oxygen. While you and I (and our furry pet, Spot) need oxygen to survive, some microorganisms would rather not deal with it at all!

Types of organisms based on oxygen requirement 🌱

  • Obligate Anaerobes 🚫🌬️

    • Definition: Microorganisms that can only survive in the absence of molecular oxygen (O2).
    • Fun Fact: They literally can't stand oxygen! It's toxic for them.
    • Where they hang out
      • Swampy areas (Imagine Shrek's home!).
      • Water-logged soils.
      • Guts of animals (Yes, right inside YOU!).
      • Deep regions of lakes or oceans.
    • Examples: Certain bacteria, archaea, and protozoa.
  • Facultative Anaerobes 🌬️❓

    • Definition: These are the cool, flexible dudes! They can live with or without oxygen.
    • Fun Fact: Think of them as bilingual organisms - they can "speak" both aerobic and anaerobic!
    • Real-World Example: E. coli bacteria in your gut can survive in both oxygen-rich and oxygen-poor environments. Handy, right?
  • Obligate Aerobes 🌬️💙

    • Definition: These organisms absolutely, positively need oxygen to survive.
    • Fun Fact: We humans are part of this club! High five! 🙋‍♀️
    • Real-World Example: Animals, plants, and certain microbes.

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IB Resources
Theme B - Form & Function
Biology HL
Biology HL

Theme B - Form & Function

Key Differences Obligate Anaerobes, Facultative Anaerobes & Obligate Aerobes

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

Table of content

Welcome to the wild world of oxygen-loving and oxygen-hating organisms! Let's take a breath and dive in. 🎈

The big picture 🌟

Not all organisms share the same love story with oxygen. While you and I (and our furry pet, Spot) need oxygen to survive, some microorganisms would rather not deal with it at all!

Types of organisms based on oxygen requirement 🌱

  • Obligate Anaerobes 🚫🌬️

    • Definition: Microorganisms that can only survive in the absence of molecular oxygen (O2).
    • Fun Fact: They literally can't stand oxygen! It's toxic for them.
    • Where they hang out
      • Swampy areas (Imagine Shrek's home!).
      • Water-logged soils.
      • Guts of animals (Yes, right inside YOU!).
      • Deep regions of lakes or oceans.
    • Examples: Certain bacteria, archaea, and protozoa.
  • Facultative Anaerobes 🌬️❓

    • Definition: These are the cool, flexible dudes! They can live with or without oxygen.
    • Fun Fact: Think of them as bilingual organisms - they can "speak" both aerobic and anaerobic!
    • Real-World Example: E. coli bacteria in your gut can survive in both oxygen-rich and oxygen-poor environments. Handy, right?
  • Obligate Aerobes 🌬️💙

    • Definition: These organisms absolutely, positively need oxygen to survive.
    • Fun Fact: We humans are part of this club! High five! 🙋‍♀️
    • Real-World Example: Animals, plants, and certain microbes.

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 🌟