3.5 Lipids

Question 1

Lipids

Answer 1

Commonly known fats and oils, molecules containing elements carbon, hydrogen and oxygen.

Question 2

Triglyceride

Answer 2

Combination of one glycerol molecule with 3 fatty acids

Question 3

Phospholipids

Answer 3

Modified triglycerides, contains the element phosphate.

Question 4

Sterols

Answer 4

Type of lipid. Complex alcohol molecules. Dual hydrophobic and hydrophilic characteristics. Hydroxyl group is polar

Question 5

Cholesterol

Answer 5

Example of sterol, role in formation of cell membranes, positioned between phospholipids with hydroxyl group

Question 6

Emulsion test

Answer 6

Test for lipids, causes white emulsion to appear on top of solution.