Learning paths
One guided path for each field of biology. Each mixes short readings, hands-on labs and a quiz that is graded on our server. Everything works without an account; sign in to save your progress and earn XP.
Choose a path
Molecular Biology
From DNA to protein
How a cell stores, copies and reads its genetic instructions.
7 steps: 5 readings, 1 lab, 1 quiz
Cell Biology
Inside the cell
The parts of a cell, what each does and where they came from.
7 steps: 5 readings, 1 lab, 1 quiz
Genetics
How traits are inherited
Genes, alleles and the rules that pass traits from parents to children.
7 steps: 5 readings, 1 lab, 1 quiz
Biochemistry
The molecules that run life
Proteins, enzymes and the chemistry that powers every cell.
8 steps: 6 readings, 1 lab, 1 quiz
Microbiology
The microbial world
Bacteria, archaea and viruses, and how microbes grow and resist drugs.
7 steps: 5 readings, 1 lab, 1 quiz
Immunology
How the body defends itself
Innate and adaptive immunity, antibodies, T cells and vaccines.
7 steps: 6 readings, 1 quiz
Neuroscience
Signals in the nervous system
How neurons carry electrical signals and how connections change.
7 steps: 6 readings, 1 quiz
Human Biology
The human body
From cells to organ systems, and how the body keeps itself in balance.
8 steps: 6 readings, 1 lab, 1 quiz
Plant Biology
How plants live
Photosynthesis, moving water and sugar, and the hormones that steer growth.
7 steps: 5 readings, 1 lab, 1 quiz
Ecology
Food webs and ecosystems
How energy flows through living communities, and what happens when a link breaks.
7 steps: 5 readings, 1 lab, 1 quiz
Evolution
Evolution in action
Natural selection, drift and the evidence that all life is related.
8 steps: 6 readings, 1 lab, 1 quiz
Marine Biology
Life in the ocean
From sunlit plankton to life around deep-sea vents.
7 steps: 6 readings, 1 quiz
Biotechnology
Tools of biotechnology
Recombinant DNA, PCR, sequencing and genome editing, and how they are governed.
7 steps: 5 readings, 1 lab, 1 quiz
Synthetic Biology
Designing biology
Building genetic circuits and minimal cells, and doing it safely.
8 steps: 6 readings, 1 lab, 1 quiz
Bioinformatics
Reading biology with computers
Databases, sequence alignment and predicting protein structure.
7 steps: 6 readings, 1 quiz
How XP works
XP is counted on our server, once for each step, lab, quiz and concept, so repeating something never earns it twice. Quizzes are graded on the server too, so a score cannot be faked from the browser.
- Complete a lesson50 XP
- Pass a quiz100 XP
- Answer every question in a quiz correctly150 XP
- Work through a lab100 XP
- Explore a concept in the knowledge graph25 XP, up to 20 a day
- Finish a learning path500 XP
Levels
Levels show how much you have done on Helicase. They are not grades or qualifications.
- Level 1: Cell Explorerfrom the start
- Level 2: Gene Reader250 XP
- Level 3: Protein Builder750 XP
- Level 4: Lab Investigator1,500 XP
- Level 5: Ecosystem Navigator3,000 XP
- Level 6: Research Scout5,000 XP
- Level 7: Biology Expert8,000 XP