Week 9

Question 1

What are the four major families of small organic molecules

Answer 1

Carbohydrates, Nucleic acid, Protein and Lipid

Question 2

How many molecules per cell in proteins

Answer 2

3,000,000

Question 3

What is the general structure of an amino acid

Answer 3

Amino acid H2N, side chain CHR, carboxyl group COOH

Question 4

Which amino acid is not optically active

Answer 4

Glycine

Question 5

What isomer are mammalian amino acids

Answer 5

L-isomer

Question 6

What two types of code can be used when showing structure of amino acids

Answer 6

Triple letter or single letter

Question 7

Which Amino acids are essential for diet

Answer 7

Histidine, isoleucine, leucine, methionine, phenylalanine, threonine, tryptophan, valine, lysine

Question 8

Which amino acids are non essential for diet

Answer 8

Alanine, Asparatate, Cysteine, Glutamate

Question 9

What are the conditionally non- essential dietary amino acids

Answer 9

Arginine, asparagine, glutamine, glycine, proline, serine, tyrosine

Question 10

What are possible side chain properties of amino acids

Answer 10

Nonpolar, aliphatic R groups
Polar uncharged R groups
Aromatic R Groups
Positively charged R groups
Negatively charged R groups