LIPIDS 1 ELEMENTS FOUND IN LIPIDS CARBON C

LIPIDS 1

ELEMENTS FOUND IN LIPIDS • CARBON (C) • HYDROGEN (H) • OXYGEN (O) Sound familiar? These are the same elements found in carbohydrates! So … what do you think makes lipids different from carbohydrates? The difference is in the arrangement and number of each of these atoms 2

These Are Lipids 1. Fats (includes oils and waxes) 2. Phospholipids We will focus our attention on the structure and function of these 2 lipids 3. Cholesterol 3

Structure of a Fat Molecule 4

Fats 1 glycerol molecule + 3 fatty acid molecules 1 fat molecule 5

Here is the triglyceride molecule formed from dehydration synthesis 6

Phospholipids 1 glycerol + 2 fatty acids + 1 phosphate 1 phospholipid How many water molecules are formed from this reaction? 3 7

Can you write a word equation for the hydrolysis of a fat molecule? fat + water 1 glycerol + 3 fatty acids 8

Now write a word equation for the hydrolysis of a phospholipid + water 1 glycerol + 2 fatty acids + 1 phosphate 9

Why do organisms need lipids? FATS AND OILS • Energy reserve— there is much chemical energy in the bonds of lipids PHOSPHOLIPIDS • A major component of the plasma membrane and the membranes surrounding the organelles 10

• https: //www. youtube. com/watch? v=Qh. Urc 4 B n. Pgg 11