Which topics come up most in Biology?

The bar is the chapter's share of the marks, with the multiple-choice and theory papers weighted the way Cambridge weights them in your grade. "In 58 of 81 papers" means the chapter was asked at least once in that many papers.

The ten biggest syllabus points

Inside the chapters, these are the parts of the syllabus Cambridge asks about most.

What came up each year

Each cell is the chapter's share of that year's theory marks, in percent, across every session and variant we have. A chapter that is dark in every column is asked every year.

Every chapter, syllabus point by syllabus point

In syllabus order. Open a chapter to see where its marks sit.

Common questions

Which topic comes up most in IGCSE Biology 0610?

Coordination and response. It carries 8.6% of the Paper 2 and Paper 4 marks in our bank, followed by Reproduction (7.9%).

How many chapters do you need for most of the marks?

14 of the 21 chapters carry 80% of the marks between them. Drugs carries the fewest, at 1.1%.

Which subtopics are asked most?

Photosynthesis (6.1, 3.9%), Diseases and immunity (10.1, 3.8%) and Enzymes (5.1, 3.4%).

How were these numbers counted?

From every question in the Zainora Biology bank: 2,513 multiple-choice questions from 74 Paper 2s, 2016–2026, and 6,113 theory marks from 81 theory papers, 2015–2026, each part filed under the chapter it tests. The two papers are weighted as Cambridge weights them, 30% and 50% of the grade.

Other subjects

• IGCSE Chemistry 0620
• IGCSE Physics 0625