(for exam 2) More lipids

Question 1

what type of structure do steroids and sterols have

Answer 1

all compounds have basic ring structure

Question 2

where is cholesterol needed

Answer 2

in cell membranes, CNS nerves

Question 3

3 types of steroid hormones

Answer 3

testosterone, estrogen, vitamin D

Question 4

what type of acid is used in fat digestion and has a basic ring structure

Answer 4

bile acid

Question 5

what is the basic building block molecule from which all others are made and where is it synthesized

Answer 5

Cholesterol, synthesized in the liver

Question 6

Characteristics of phospholipids

Answer 6

1. cousin to triglycerides
2. have both a fat soluble and water soluble part
3. 2 fatty acids and 1 phosphate group

Question 7

term meaning there is both a water soluble and water insoluble component on a molecule

Answer 7

amphipathic

Question 8

Where are phospholipid bilayers located

Answer 8

animal cell membranes

Question 9

what types of foods are a good source of phospholipids (Lecithin)

Answer 9

egg yolks and soy oil

Question 10

Characteristics and uses for Lecithin

Answer 10

1. Used as emulsifiers in the food and feed industry
2. help fat/oil mix better n water based solutions
3. prevents layering and separation

Question 11

What is used in milk replacer

Answer 11

Lecithin

Question 12

what makes up glycolipids

Answer 12

2 fatty acids and 1 galactose

Question 13

what is the most common type of lipid in forages (alfalfa, silages, grass)

Answer 13

glycolipid

Question 14

what are seeds mostly made up of

Answer 14

triglycerides

Question 15

2 characteristics of plant waxes

Answer 15

undigestible

provide no energy to the animal