chapter 3 unit 1

Question 1

monosaccharides

Answer 1

• glucose and fructose
• has a carbonyl group and multiple hydroxyl groups

Question 2

disaccharide

Answer 2

two monosaccharides joined together by a glycocidic linkage
-lactose , sucrose

Question 3

glycocidic linkage

Answer 3

a covalent bond formed between 2 monosaccharides by a dehydration reaction

Question 4

polysaccharide

Answer 4

macro molecules
- polymers with a few thousand monosaccharides joined by glycocidic linkages
- strengthens plant cell walls
- stores glucose for energy in plants and humans
- strengthens exoskeletons and fungal cell walls

Question 5

fats

Answer 5

constructed from glycerol and fatty acids

Question 6

glycerol

Answer 6

alcohol
each of its 3 carbons bears a hydroxyl group

Question 7

fatty acid

Answer 7

• a long hydro skeleton of 16-18 carbon atoms
• the carbons at the end of skeleton contain a carboxyl group

Question 8

triglycerol

Answer 8

three fatty acids linked to one glycerol molecule by an esther linkage ( a bond btwn hydoxyl and carboxyl group)

Question 9

saturated fatty acid

Answer 9

hydrocarbon chains are connected by single bonds only

Question 10

unsaturated fatty acids

Answer 10

Unsaturated fatty acids have one or more double bonds