| mRNA codon | Codes for |
|---|---|
| AUG | Met (start) |
| UUC | Phe |
| GAA | Glu |
| UAA | stop |
| UAC | Tyr |
| AAG | Lys |
| CUU | Leu |
| AUU | Ile |
What is in Higher Human Biology
Higher Human Biology has three areas: Human cells, Physiology and health, and Neurobiology and immunology, with practical techniques and scientific skills throughout.
26 weeks, 104 hours in all
Start with Topic 1
Cells, DNA and gene expression: 14.4 of your hours. It is 3 of the 20 questions on each timed paper, 15%.
| Topic | Your hours | Share of the checks |
|---|---|---|
| Topic 1: Cells, DNA and gene expression | 14.4 | 15% |
| Topic 4: Reproduction, fertility and screening | 14.4 | 15% |
| Topic 7: The nervous system, memory and synapses | 14.4 | 15% |
| Topic 8: Defence against disease, immunisation and clinical trials | 14.4 | 15% |
| Topic 2: Mutations, genomics and metabolic pathways | 9.6 | 10% |
| Topic 3: Cellular respiration and energy in muscle | 9.6 | 10% |
| Topic 5: Blood vessels and the heart | 9.6 | 10% |
| Topic 6: Cardiovascular disease, blood glucose and obesity | 9.6 | 10% |
Week by week
- Week 1Section 1: Cells, DNA and gene expression
- Week 2Section 1: Cells, DNA and gene expression
- Week 3Section 1: Cells, DNA and gene expression
- Week 4Section 1: Cells, DNA and gene expression, Section 4: Reproduction, fertility and screening
- Week 5Section 4: Reproduction, fertility and screening
- Week 6Section 4: Reproduction, fertility and screening
- Week 7Section 4: Reproduction, fertility and screening
- Week 8Section 4: Reproduction, fertility and screening, Section 7: The nervous system, memory and synapses
- Week 9Section 7: The nervous system, memory and synapses
- Week 10Section 7: The nervous system, memory and synapses
- Week 11Section 7: The nervous system, memory and synapses, Section 8: Defence against disease, immunisation and clinical trials
- Week 12Section 8: Defence against disease, immunisation and clinical trials
- Week 13Section 8: Defence against disease, immunisation and clinical trials
- Week 14Section 8: Defence against disease, immunisation and clinical trials
- Week 15Section 8: Defence against disease, immunisation and clinical trials, Section 2: Mutations, genomics and metabolic pathways
- Week 16Section 2: Mutations, genomics and metabolic pathways
- Week 17Section 2: Mutations, genomics and metabolic pathways, Section 3: Cellular respiration and energy in muscle
- Week 18Section 3: Cellular respiration and energy in muscle
- Week 19Section 3: Cellular respiration and energy in muscle
- Week 20Section 3: Cellular respiration and energy in muscle, Section 5: Blood vessels and the heart
- Week 21Section 5: Blood vessels and the heart
- Week 22Section 5: Blood vessels and the heart, Section 6: Cardiovascular disease, blood glucose and obesity
- Week 23Section 6: Cardiovascular disease, blood glucose and obesity
- Week 24Section 6: Cardiovascular disease, blood glucose and obesity
- Week 25A timed paper and two Section 2 style questions, then review every lost mark
- Week 26A timed paper and two Section 2 style questions, then review every lost mark
| Question paper | 2 hours 30 minutes, 100 marks |
|---|---|
| Section 1 | 20 marks of multiple choice |
| Section 2 | 80 marks of written answers |
| Exam day 2027 | Wednesday 12 May, 09:00 to 11:30 |
The key areas
- Human cells: division and differentiation, stem cells and cancer, the structure and replication of DNA, gene expression, mutations, human genomics, metabolic pathways, cellular respiration and energy systems in muscle cells.
- Physiology and health: gamete production and fertilisation, the hormonal control of reproduction, controlling fertility, antenatal and postnatal screening, blood vessels, the heart, cardiovascular disease, and blood glucose and obesity.
- Neurobiology and immunology: the divisions of the nervous system and neural pathways, the cerebral cortex, memory, neurons and neurotransmitters at synapses, non-specific and specific defences, immunisation, and clinical trials of vaccines and drugs.
The assignment
The course award also includes an assignment: a report on a human biology investigation, 20 marks scaled to 25, worth 20% of the award. It is carried out in school, and this course does not cover it.
How this course maps the key areas
The course groups the key areas into eight sections, each with two lessons, Section 1 style multiple choice and Section 2 style questions. Set the planner above with the weeks you have and how sure you are of each section, and it splits your hours.
Try 2 questions
Next step
Questions people ask
How long is the Higher Human Biology exam?
From session 2026-27 there is one question paper of 2 hours 30 minutes, 100 marks: Section 1 is 20 marks of multiple choice and Section 2 is 80 marks of written questions.
Is there coursework in Higher Human Biology?
Yes, an assignment: a report of 20 marks, scaled to 25, worth 20% of the award. The question paper is the other 80%.
Does this course cover Higher Biology?
No. It is built for Higher Human Biology only, not Higher Biology, National 5 or Advanced Higher.