3-2 Molecules of Life

3-2 Molecules of Life

All life on Earth is made up of 4 things… Proteins Lipids Nucleic Acids Carbohydrates

All life on Earth is made up of 4 things… Proteins Lipids Nucleic Acids Carbohydrates All 4 are organic, which means they’re made mostly of carbon

Proteins Definition – organic compound that helps build cells Building block = amino acids

Proteins Found in skin and muscles, and everywhere else

Proteins Examples: Keratin (hair) Collagen (bones, muscles, skin)

Proteins Food Examples: Meat and nuts are high in protein

Carbohydrates Definition – organic compounds that provide energy to the cell

Carbohydrates Definition – organic compounds that provide energy to the cell Building block = monosaccharides

Carbohydrates Found in all cells as energy

Carbohydrates Found in all cells as energy Can be sugars OR starches

Carbohydrates Examples: Glucose Fructose Sucrose (table sugar)

Carbohydrates Food Examples Breads Fruits Anything with sugar

Nucleic Acids Hereditary information and storage ex. DNA and RNA Building blocks = nucleotides

Nucleic Acids Found in all cells (DNA) Examples : DNA and RNA

Lipids Definition – organic compounds made of fatty acids that don’t dissolve in water Building block = fatty acids

Lipids Examples: Oils Fats Steroids Waxes

Lipids Saturated-single bonded carbon chain

Lipids Saturated-single bonded carbon chain Unsaturated-double bonded carbon chain