Biology 9700 · AS & A Level · Cells as the basic units of living organisms

Cells as the basic units of living organisms — practice question

Mitochondria are believed to have originated from prokaryotic cells that were taken in by an ancestral cell. Which feature did the prokaryotes lose as they evolved into mitochondria?

Acell wall
Bcircular chromosome
Cendoplasmic reticulum
Dribosomes

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

Full mark scheme, point by point
Step-by-step worked solution
Write your answer & get it marked instantly by AI