August 26

Question 1

Macromolecules

Answer 1

Proteins

Lipids

Nucleic Acids

Lipids

Question 2

Monomers

Answer 2

building blocks (amino acids, nucleic acids)

Question 3

Polymers

Answer 3

Larger molecules of bonded monomers

Question 4

Carbohydrates

Answer 4

C_nH_2nO_n

Pentose- 5 carbon sugars

Hexose- 6 carbon sugars

joined by glycosidic bonds

Starch: energy storage in plants

Glycogen: energy storage in animals

Cellulose: structural sugar

Question 5

Complex Polysaccharides

Answer 5

Glycoproteins

Glycolipids

Function as cell surface receptors (communication)

Question 6

Lipids

Answer 6

Amphipathic

Fatty acid tails

Triglycerides: 3 fatty acids bonded to one glycerol

Phospholipids: cell membrane, two fatty acids and a phosphate group

Question 7

What do phospholipids do in aqueous solutions?

Answer 7

1. Phospholipid bilayer
2. Micelle

Question 8

Nucleic Acids

Answer 8

Composed of: phosphate, pentose sugar, nitrogenous base

Purine: two fused rings

Pyrimidine: Single ring

Nitrogenous bonds: H bonded, form rungs C triple bond to G, A double bond to T

Question 9

ATP

Answer 9

Adenosine Triphosphate

High energy bonds between phosphate groups

Most important short term energy storage molecule

Cleavage of PO- releases energy

Question 10

Proteins

Answer 10

Amino acid monomers

made of C, H, N, O

two contain S

one contains selinium (selinocysteine)

• COOH
• NH₂

Joined by peptide bond