Chap 3 Biomolecules

Negative result for ethanol emulsion test

• Solution remains clear

• Solution turns cloudy

• Solution changes color

• Solution forms a precipitate

Role of simple carbohydrates

• immediate energy source

• long-term energy storage

• structural support in cells

• transport of nutrients

Role of fats

• Energy store or

• Hormone production

• Cell membrane structure

• Muscle contraction

Basic unit of starch

• fructose

• sucrose

• glucose

• galactose

Positive result for Benedict's test

• Brick red precipitate

• Blue solution

• Yellow precipitate

• Green solution

Basic unit of proteins

• nucleotide

• fatty acid

• amino acid

• carbohydrate

Positive result for biuret test

• Solution turns violet

• Solution turns blue

• Solution remains clear

• Solution turns green

Role of proteins

• Cell growth and repair

• Make some types of hormones

• Store genetic information

• Make antibodies

Basic unit of glycogen

• fructose

• galactose

• glucose

• sucrose

Basic unit of lipid

• Glycerol and Fatty acid

• Triglyceride

• Phospholipid

• Cholesterol