DP Biology (last assessment 2024)
Question 18M.2.HL.TZ2.c.ii
Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.2.HL.TZ2.c.ii |
Level | HL | Paper | 2 | Time zone | TZ2 |
Command term | Outline | Question number | c.ii | Adapted from | N/A |
c.ii.
[Maximum mark: 2]
18M.2.HL.TZ2.c.ii
Outline the role of tRNA activating enzymes in translation.
[2]
Markscheme
a. ATP «hydrolysis» provides energy for amino acid attachment ✔
b. they attach a specific amino acid to the (3') end / free CCA of a tRNA ✔
c. they do this repeatedly / they attach amino acid to all of the tRNA molecules that have anticodon corresponding to that amino acid
