Question

Which of the following processes is NOT a post-translational modification that occurs in the endoplasmic reticulum or Golgi apparatus to make proteins functional?

A) the removal of the leader sequence
B) the cleavage of excess amino acids
C) the addition of carbohydrates
D) the addition of more amino acids
E) the addition of lipids

Answer 1

The addition of more amino acids is NOT a post-translational modification in the ER or Golgi apparatus.

Step-by-step explanation:

The process that is NOT a post-translational modification that occurs in the endoplasmic reticulum (ER) or Golgi apparatus to make proteins functional is the addition of more amino acids. Post-translational modifications involve various chemical modifications, such as phosphorylation, methylation, or glycosylation of individual amino acids. These modifications can alter the protein's function, stability, or localization.