amino acids, proteins and DNA

Question 1

One of the three compounds shown in parts (a), (b) and (c) cannot be broken down
by hydrolysis.
Write the letter (a), (b) or (c) to identify this compound and explain why hydrolysis of
this compound does not occur.

Answer 1

compound c

explanation C-C are C-F bonds are too strong

Question 2

what is important to remember

Answer 2

the hydroxy is the alcohol group and is lower priority than the carboxylic acid

Question 3

what happens when an excess of methanol in the presence of concentrated sulfuric acid

Answer 3

the methyl group of the methanol goes to COO-

Question 4

draw the structure of the species formed when glycerine reacts with excess bromoethane

Answer 4

the methyl groups on the bromoethane goes to N

Question 5

how are amino acids separated during chromography

Answer 5

The solvent is moving/ it is mobile

the stationary phase

separation depends on the balance between solubility in each phase

Amino acids have different polarities

1 Therefore, have different retention on the stationary phase or different solubility in the developing solvent