By a simple transamination reaction, intermediates in the Citric ...

[mmm]

By a simple transamination reaction, intermediates in the Citric Acid Cycle can be converted in one step to all of these amino acids, except:
 a. Alanine
  b. Aspartic acid
  c. Glutamic acid
  d. Cysteine
  e. All of these amino acids are only one step away from the major metabolic pathways.

Question 2

By means of a semialdehyde intermediate, glutamate is involved in the synthesis of which of the following amino acids?
 a. Arginine
  b. Glutamine
  c. Lysine
  d. Proline
  e. Both a and d.

[Jbrasil]

Answer to Question 1

d

Answer to Question 2

e