IB Biology SL B1.2.2 Peptide Bond Formation Question Bank

Practise IB Biology SL B1.2.2 by drawing peptide bonds, explaining condensation and identifying how amino acids form dipeptides and polypeptides.

Exam points

Draw and label peptide bonds as amino acids join by condensation and release water.
Calculate peptide-bond counts and identify dipeptide or polypeptide products from diagrams.

[Maximum number: 2]

A short base sequence of mRNA and a table of the genetic code are shown below.
Sequence of mRNA
AUGAGCCGAAGGUAGCUG
Table of the genetic code

(a)

The diagram shows a section of a polypeptide.

[ 2 ]

(i)

Annotate the diagram to show a peptide bond between two amino acids.

[ 1 ]

Any annotation between a $\mathrm{C=O}$ and the next NH.

(ii)

State the type of reaction that removes water while linking amino acids together to form polypeptides.

[ 1 ]

All question bank results loaded