exam 1 (71-114)

What is a lipid?

• Organic molecule mostly made of carbon and hydrogen, hydrophobic

• Protein

• Carbohydrate

• Nucleic acid

What are the 4 groups of lipids?

• Fats/oils, phospholipids, steroids, waxes

• Proteins, carbohydrates, nucleic acids, minerals

• Sugars, amino acids, enzymes, DNA

• Vitamins, minerals, fats, water

What are fats and oils? What is their function?

• Energy storage molecules and insulation

• Structural proteins

• Genetic material

• Enzymes

What are the 2 types of unit molecules in fats and oils?

• Fatty acids and glycerol

• Amino acids and nucleotides

• Glucose and fructose

• Phosphates and sugars

What is a fatty acid?

• Long hydrocarbon chain with a carboxyl group

• Sugar molecule

• Protein monomer

• Nucleotide

What is glycerol?

• Three-carbon alcohol backbone of fats and oils

• Sugar molecule

• Fatty acid

• Amino acid

In fats and oils, how many fatty acid molecules per glycerol?

• Three

• One

• Two

• Four

What is a triglyceride?

• Fat molecule made of glycerol plus three fatty acids

• Protein molecule

• Sugar molecule

• Nucleotide

What are the characteristics of a saturated fat?

• No double bonds, solid at room temperature

• Has double bonds, liquid at room temperature

• Polar molecule

• Hydrophilic molecule

Give examples of saturated fats.

• Butter, lard, animal fats

• Olive oil, fish oil

• Corn oil, canola oil

• None