Chapter 2: Atoms, Ions, And Molecules

Question 1

Name major classes of lipids

Answer 1

Phospholipids, Eicosanoid, Triglycerides, and Steroids

Question 2

Define function(s) of triglycerides

Answer 2

Long term energy storage in connective tissue, structural support, cushioning, and body insulation.

Question 3

Define function(s) of triglycerides

Answer 3

Forms barrier between inside and outside of cell. Part of cell membrane.

Question 4

Define function(s) of steroids

Answer 4

Regulatory hormones released by endocrine glands, bile salts facilitate micelle formation in digestive tract.

Question 5

Define function(s) of eicosanoids

Answer 5

Acts as signaling molecules, has primary functions in inflammatory response of immune system and communication in nervous system.

Question 6

Describe structure of triglycerides

Answer 6

Glycerol and 3 fatty acid molecules

Question 7

Describe structure of phospholipids

Answer 7

1 glycerol, 2 fatty acids, 1 phosphate, and other organic groups

Question 8

Describe structure of steroids

Answer 8

Four rings of usually hydrocarbons with varying side chains extending from rings

Question 9

Describe structure of eicosanoids

Answer 9

Modified 20-carbon fatty acids