IB Biology HL · 2025
3.6 Integration of body systems
1 past paper questions from 1 papers across 1 exam session. See what repeats, then practise the same skills with AI marking.
Original Exam Vault questions with AI markscheme feedback for this topic.
HL archive · from 2025
3.6 Integration of body systems
Latest exam session: May 2025
- questions
- 1
- questions
- papers
- 1
- papers
- exam session
- 1
- exam session
- micro-topics
- 1
Micro-topics in 3.6 Integration of body systems
In syllabus order. The ring is the share of papers each appears in.
3.6.1
Integrating nervous and endocrine systems
1 question · in 13% of papersAppears in 1 of the 8 Biology HL papers analysed (13%), at least once each.
Occasionallast May 25 P1 TZ2
Exam pattern
How often each micro-topic has been examined, year by year. Each label is explained under the grid.
Does it repeat?
Questions per year for each micro-topic.
fewermore
| Micro-topic | 2025 | 2026 |
|---|---|---|
| 1Integrating nervous and endocrine systems, 2025: 1 question | ·Integrating nervous and endocrine systems, 2026: 0 questions |
- Occasionalin about one paper in ten
Past paper generator
Generate Biology HL past paper questions
Choose what to revise and build a set in one click. Every question stays whole, so multi-part questions come as they appeared in the exam.
- 1Pick any unit, topic or micro-topic
- 2Generate whole exam questions from the archive
- 3Practise the same skills with AI marking
Questions on 3.6 Integration of body systems, by exam session
Which papers asked about 3.6 Integration of body systems, and which question numbers. Open a paper to see them highlighted.
May 2025
1 question across 1 paper
Every 3.6 Integration of body systems question, unlocked
Generate all 1 questions in this topic at once, practise every one with AI marking, and see how each mark is awarded.
- Every past-paper question in any unit, topic or micro-topic
- Generate sets of 20 or all questions, as often as you like
- Unlimited practice with AI marking and worked answers
- See how every mark is awarded for each question
- Predicted papers and crash courses built from the same data
Used by IB students preparing for Nov 2026, May 2027 and May 2028
From €6/mo. 14-day money-back guarantee. Cancel anytime.
Frequently asked questions
Short answers about this page.
Which Biology HL exam sessions are covered for 3.6 Integration of body systems?
2 exam sessions from 2025, the latest May 2025. Every Paper 1 in every timezone is read and classified in full, which gives 1 paper in this archive.
Which 3.6 Integration of body systems topic comes up most?
Integrating nervous and endocrine systems (3.6.1): in 13% of papers, last seen May 25 P1 TZ2. Usually "identify", worth about 1 marks in a paper that includes it.
Can I see the original question and mark scheme?
No. The wording belongs to the IB. You get the citation, the marks, the command term and the skill tested, plus our own matched practice questions with worked answers and AI marking.
What do "banker", "due" and "rising" mean?
Banker: examined in at least one sitting in four and still appearing. Due: regular before, but absent for the last two exam sessions. Rising: clearly more common in the last two years. Our classification of real papers, not an IB statistic.
What is free and what needs Pro?
Reading this page and the exam pattern is free. A free account generates three sets of ten questions and launches one practice set. Pro opens every question in any scope, sets of twenty or all, and unlimited practice.
Keep going
More Biology HL exam preparation
Every question, by paper
What each Biology HL paper tests across all its sittings: the marks by unit and the micro-topics it keeps coming back to.
Open the paper analysis
Predicted questions
The question types most likely in the next Biology HL sitting, built from this same archive.
See the predictions
Formula booklet, explained
Every formula you are given in the exam, with when to use it and the traps around it.
Open the booklet guide
Mock exams
Full Biology HL papers under timed conditions, marked by AI against IB criteria.
Sit a mock
All IB past papers
Every subject we have classified by topic, with the same exam-pattern analysis.
Browse subjects