M2 C3 - Biological molecules

What atoms make up:

Carbohydrates

Lipids

Proteins

Nucleic acid

Carbohydrates - C, H, O

Lipids - C, H, O

Proteins - C, H, O, N

Nucleic acid - C, H, O, N, P

Properties of water and how it links to: transport, habitat or as a coolant

• Good solvent due to polar nature allowing it to dissolve other molecules - transport

• High cohesion due to strong hydrogen bonds between it’s polar molecules - transport

• High specific heat capacity maintains a stable internal temp (temp buffer) - habitat

• High surface tension - habitat

• Floats when frozen - habitat

• High latent heat of vaporization useful for sweat - cooling

Importance of property of solvent in water

Allows chemical reactions to take place inside cells

Importance of property of high latent heat of vaporization in water

Cooling via evaporation in sweat

Importance of property of cohesion in water

Allows a continuous coloumn of water to move through xylem vessels without breaking

The importance of property of high specific heat capacity

Internal temp stays stable and prevents it changing quickly both in body and habitats