Bio 102 lec

Carbon

Fundamental form of matter

Contains protons (+) Neutrons (uncharged) and electrons (-)

2 or more atoms held together by a chemical bond

• Covalent - strong bond
• Ionic - weak bond

Hydrogen - weak bond

Nonpolar - No charge

Polar - Partial charges (+ or -)

Charged - cation (+) or anion (-)

• Polar
• Readily forms hydrogen bonds
• Excellent solvent. Dissolves both charged and polar molecules

does not like water. example: oil

likes water or molecules will dissolve in water ( salt)

• Readily forms a variety of covalent ( strong ) bonds.
• Attaches to a variety of side groups

forms framework of all organic molecules

basis for biological macromolecules