IB Biology HL · 2025
2.8 Muscle and motility
21 past paper questions from 9 papers across 3 exam sessions. See what repeats, then practise the same skills with AI marking.
Original Exam Vault questions with AI markscheme feedback for this topic.
HL archive · 2025 to 2026
2.8 Muscle and motility
Latest exam session: May 2026
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Micro-topics in 2.8 Muscle and motility
In syllabus order. The ring is the share of papers each appears in. 5 of them have no matching questions in this archive.
2.8.1
Adaptations for movement as a universal feature of living organisms
No question tagged to this topic in the 18 Biology HL papers analysed
No matches in this archiveRevise it- Regular
last May 26 P1 TZ3
2.8.3
Role of the protein titin and antagonistic muscles in muscle relaxation
5 questions · in 28% of papers
Frequently testedlast May 26 P1 TZ2
2.8.4
Structure and function of motor units in skeletal muscle
No question tagged to this topic in the 18 Biology HL papers analysed
No matches in this archiveRevise it- Less common
last May 25 P1 TZ3
- Regular
last May 26 P1 TZ2
- Occasional
last Nov 25 P1 TZ3
2.8.8
No question tagged to this topic in the 18 Biology HL papers analysed
No matches in this archiveRevise it- No matches in this archiveRevise it
2.8.10
Adaptations for swimming in marine mammals
No question tagged to this topic in the 18 Biology HL papers analysed
No matches in this archiveRevise it
Exam pattern
How often each micro-topic has been examined, year by year. Each label is explained under the grid.
Does it repeat?
Top 4 of 5 micro-topics for the next sitting. Numbers are questions per year.
fewermore
| Micro-topic | 2025 | 2026 |
|---|---|---|
| 3Role of the protein titin and antagonistic muscles in muscle relaxation, 2025: 3 questions | 2Role of the protein titin and antagonistic muscles in muscle relaxation, 2026: 2 questions | |
| 2Movement at a synovial joint, 2025: 2 questions | 1Movement at a synovial joint, 2026: 1 question | |
| 2Sliding filament model of muscle contraction, 2025: 2 questions | 1Sliding filament model of muscle contraction, 2026: 1 question | |
| 9Range of motion of a joint, 2025: 9 questions | ·Range of motion of a joint, 2026: 0 questions |
1 more micro-topics with a free account
- Frequently testedin at least a quarter of all papers, and still appearing in the last two years
- Regularin roughly one paper in six or more
- Occasionalin about one paper in ten
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Questions on 2.8 Muscle and motility, by exam session
Which papers asked about 2.8 Muscle and motility, and which question numbers. Open a paper to see them highlighted.
May 2026
4 questions across 3 papers
November 2025
4 questions across 3 papers
May 2025
4 questions across 3 papers
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Frequently asked questions
Short answers about this page.
Which Biology HL exam sessions are covered for 2.8 Muscle and motility?
4 exam sessions from 2025 to 2026, the latest May 2026. Every Paper 1 and 2 in every timezone is read and classified in full, which gives 9 papers in this archive.
Which 2.8 Muscle and motility topic comes up most?
Role of the protein titin and antagonistic muscles in muscle relaxation (2.8.3): in 28% of papers, last seen May 26 P1 TZ2. Usually "Identify", worth about 1.4 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.
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