ch 2- lipids

Question 1

All lipids are ______ (hydrophilic or hydrophobic)

Answer 1

hydrophobic !! water fearing !!! Ooohh spoOOky ; lipids have many diverse functions

Question 2

Types of Lipids

Answer 2

• fats and oils
• phospholipids
• steroids

Question 3

function of fats

Answer 3

long term energy storage, insulation, protective cushions against organs

Question 4

fats also called _____

Answer 4

triglyceride bc of its 3 part structure

Question 5

fats are composed of

Answer 5

• glycerol backbone

- 3 fatty acids

Question 6

Unsaturated Fats:

Answer 6

have double bonds, are bent

-liquid at room temperature (oils, veggie oil)

Question 7

Saturated Fats:

Answer 7

full, straight, single bond (don’t have carbon double bonds)
-solid at room temperature

Question 8

Transfat

Answer 8

form of unsaturated fats by adding Hydrogen!!! very unhealthy

Question 9

Function of Phospholipids

Answer 9

form membranes by arranging themselves in a phospholipid bilayer that surrounds the cell

Question 10

Phospholipids are composed of

Answer 10

two fatty acids and a phosphate group

Question 11

Phospholipid Bilayer….

Answer 11

phosphate group is polar and hydrophilic (the head) and the fatty acids are non polar and hydrophobic (the tail)

Question 12

Function of Steroids

Answer 12

may be used to form hormones, such as testosterone and estrogen

Question 13

Structure of Steroids

Answer 13

backbone and 4 fused carbon rings

Question 14

ex of steroid

Answer 14

Cholesterol is a steroid formed by the body that also enters the body as part of our diet; a component of an animal cell’s plasma membrane