IB skill practice

Identify cell structures and their functions

Paper 1, Paper 2 5 marks Difficulty 4

Ribosome role in cell function

A school cell-model lesson highlights small dots in the cytoplasm and on rough endoplasmic reticulum. Identify the structure and its function. Enter the answer and choose the interpretation that best matches the biological evidence.

Worked practice: biological evidence and answer

Use the labelled biological evidence first, then connect it to the final answer.