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

Unlocking Triglycerides Formation & Bonds Revealed

Word Count Emoji
378 words
Reading Time Emoji
2 mins read
Updated at Emoji
Last edited on 15th Oct 2024

Table of content

Triglycerides 🍟

  • Definition: A yummy molecule (not actually edible in its raw form!) made by joining three fatty acids and one glycerol.
  • How's it Made?
    • Via 🌊 condensation reactions, think of it as LEGO bricks coming together!
    • Each time a fatty acid and glycerol combine, a water molecule pops out. It's like squeezing a sponge! Do it thrice, and you get three water molecules.
    • The special link between fatty acid and glycerol is called the ester bond (imagine it as the superglue holding our LEGO bricks together).
      • Fun Fact: Ester bonds are like a handshake 🤝 between the acid part of the fatty acid (carboxyl –COOH group) and the alcohol part of the glycerol (hydroxyl –OH group).
    • Since we use up the only friendly, water-loving (hydrophilic) parts in this bonding, triglycerides turn into complete water-haters (hydrophobic).
  • Are they Oils or Fats?
    • Depends on the type of fatty acids in the mix! Think of it like choosing ingredients for a smoothie; different ingredients = different taste & texture.

Phospholipids 🍳

  • Structure Peep: They're like the cousin of triglycerides! But with a twist.

    • They have two fatty acids and one glycerol.

    • BUT, instead of the third fatty acid, they sport a cool phosphate group.

  • Water Love-Hate Relationship

    • The phosphate head is like you at a pool party - loves to jump in (hydrophilic)!

    • But the fatty acid tails? They're the shy ones, avoiding the water (hydrophobic).

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 🌟

Nail IB's App Icon
IB Resources
Theme B - Form & Function
Biology HL
Biology HL

Theme B - Form & Function

Unlocking Triglycerides Formation & Bonds Revealed

Word Count Emoji
378 words
Reading Time Emoji
2 mins read
Updated at Emoji
Last edited on 15th Oct 2024

Table of content

Triglycerides 🍟

  • Definition: A yummy molecule (not actually edible in its raw form!) made by joining three fatty acids and one glycerol.
  • How's it Made?
    • Via 🌊 condensation reactions, think of it as LEGO bricks coming together!
    • Each time a fatty acid and glycerol combine, a water molecule pops out. It's like squeezing a sponge! Do it thrice, and you get three water molecules.
    • The special link between fatty acid and glycerol is called the ester bond (imagine it as the superglue holding our LEGO bricks together).
      • Fun Fact: Ester bonds are like a handshake 🤝 between the acid part of the fatty acid (carboxyl –COOH group) and the alcohol part of the glycerol (hydroxyl –OH group).
    • Since we use up the only friendly, water-loving (hydrophilic) parts in this bonding, triglycerides turn into complete water-haters (hydrophobic).
  • Are they Oils or Fats?
    • Depends on the type of fatty acids in the mix! Think of it like choosing ingredients for a smoothie; different ingredients = different taste & texture.

Phospholipids 🍳

  • Structure Peep: They're like the cousin of triglycerides! But with a twist.

    • They have two fatty acids and one glycerol.

    • BUT, instead of the third fatty acid, they sport a cool phosphate group.

  • Water Love-Hate Relationship

    • The phosphate head is like you at a pool party - loves to jump in (hydrophilic)!

    • But the fatty acid tails? They're the shy ones, avoiding the water (hydrophobic).

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 🌟