lipids

Question 1

what are triglycerides?

Answer 1

they are a non-polar hydrophobic molecule

Question 2

describe the structure of fatty acids and glycerol

Answer 2

fatty acids
- long chain of carbon to hydrogen where they may be saturated or unsaturated with carboxylic group at the end

glycerol
- molecule containing 3 carbons with 3 hydroxyl groups

Question 3

explain the formation of triglycerides

Answer 3

they are made by the reaction between fatty acids containing the carboxylic group and glycerol containing the hydroxyl group in a condensation reaction to produce a product known as triglyceride with ester bonds.

Question 4

what does non-polar and polar mean?

Answer 4

polar=charged

non-polar= uncharged

Question 5

what are 3 main functions of triglyceride

Answer 5

1- energy store
2- insulation
3-metabolic source of water

Question 6

explain the 3 main functions of triglyceride

Answer 6

1- energy store
: triglyceride contains a long a chain of carbon to hydrogen bonds allowing more energy to be released

2- insulation
3- metabolic source of water
: fat gets turned into water and carbon dioxide by oxidation

Question 7

what does the phospholipid layer contain?

Answer 7

1- phosphate head

2- fatty acid tail

Question 8

what are the characteristic of contents of phospholipid?

Answer 8

1- phosphate head
- polar and hydrophilic
2- fatty acid tail
- non polar and hydrophobic

Question 9

what do hydrophobic and hydrophilic mean?

Answer 9

hydrophobic- water hater

hydrophilic-water lover