Chapter 3: Lipids

Question 1

water-insoluble, primarily nonpolar biological molecules composed mostly of hydrocarbons

Answer 1

lipids

Question 2

three types of lipid molecules?

Answer 2

neutral lipids, phospholipids, steroids

Question 3

found in cells as energy-storage molecules, have no charged groups

Answer 3

neutral lipids

Question 4

two types of neutral lipids?

Answer 4

oils and fats

Question 5

contains a single hydrocarbon chain with a carboxyl group

Answer 5

fatty acid

Question 6

fatty acid binds the maximum possible number of hydrogen atoms

Answer 6

saturated

Question 7

if one or more double bonds link the carbons

Answer 7

unsaturated

Question 8

fatty acids combine with long-chain alcohols or hydrocarbon structures
-way harder and less greasy than fats

Answer 8

waxes

Question 9

the glycerol unit that forms the backbone of neutral lipids has three OH groups at which fatty acids may link, producing a nonpolar compound

Answer 9

triglyceride

Question 10

phosphate containing this are the primary lipids of cell membranes

Answer 10

phospholipid

Question 11

lipids with structures based on a framework of four carbon rings

Answer 11

steroids

Question 12

the most common steroids, have a single polar OH group linked to one end of the ring framework and a complex, nonpolar hydrocarbon chain at the other end

Answer 12

sterols

Question 13

is an important component of animal cell membranes

Answer 13

cholesterol

Question 14

important component of plant cell membranes

Answer 14

phytosterols