Lipids

Question 1

increase in double bonds in unsaturated fatty acids means that the melting point does what?

Answer 1

decrease and vice versa

Question 2

what are the two major categories of lipids?

Answer 2

with and without fatty acids

Question 3

what are two types of lipids that have fatty acids?

Answer 3

1. storage lipids
2. membrane lipids

Question 4

what is the main storage lipid and it’s subunit?

Answer 4

triacylglycerols–> glycerol

Question 5

what are the 2 major membrane lipids and their subunits?

Answer 5

1. phopspholipids–> lgycerophopholipids and shingolipids
2. glycolipids–>shingolipids and galactolipids (sulfolipids)

Question 6

what is the difference between phospholipids and glycolipids?

Answer 6

phospholipids have phosphate heads while glycolipids have carbohydrate heads

Question 7

are triaglycerols nonpolar?

Answer 7

Yes

Question 8

what is triaglycerol’s function?

Answer 8

1. energy storage
2. thermal insolation (brown adipose tissues)
3. source of heat

Question 9

what are the two classifications of triaglycerols?

Answer 9

simple: has the same fatty acid
mixed: has different fatty acids

Question 10

what are the 2 types of triaglycerides?

Answer 10

fats and oils (know the difference on a molecular level)

Question 11

what are the advantages of fats over polysaccharides?

Answer 11

1. more energy per carbon because they are more reduced
2. less water because they are nonpolar

Question 12

True or False: Glucose and glycogen are for long term energy needs and quick delivery?

Answer 12

False; they are for short-term energy needs and quick delivery

Question 13

True or False: fats are for short term energy needs, good storage, and fast delivery?

Answer 13

False; they are for long-term energy needs, good storage, and slow delivery