Higher science
Higher Biology
Start with a topic, work through an example, then try some questions on your own.
Practise one topic at a time, mix topics or try a short exam-style set. Your progress is saved separately for this course.
If you get stuck, choose prepared guidance or optional AI Tutor for a conversation about this course. Recovery helps you revisit a topic with support before trying fresh questions on your own. Tutor Scotland checks ordinary science practice within the site. How optional AI Tutor uses information.
Use the feedback to decide what to practise next. If we can’t check an answer reliably, we’ll show it as unconfirmed. Practice feedback does not give official marks or predict a grade.
Use original practice investigations and sample data to prepare for your assignment. Do your assessed assignment yourself and follow your teacher’s guidance. You’ll need supervised practical work to show your lab skills.
DNA and the genome
- DNA structure and organisation
- DNA replication, primers and PCR
- Transcription, translation and the genetic code
- Alternative splicing, protein folding and phenotype
- Differential expression and stem-cell potential
- Coding, regulatory and untranslated genome regions
- Gene and chromosome mutations and evolutionary novelty
- Selection patterns and horizontal gene transfer
- Allopatric and sympatric speciation
- Sequencing, phylogenetics, clocks and personalised medicine
Metabolism and survival
- Integrated metabolic pathways and induced fit
- Competitive, non-competitive and feedback inhibition
- Glycolysis, acetyl coenzyme A and the citric acid cycle
- Electron transport, proton gradients and ATP synthase
- Fermentation, coenzyme regeneration and ATP transfer
- Metabolic rate and comparative circulation
- Conformers, regulators and metabolic costs
- Hypothalamic negative feedback and effectors
- Dormancy, torpor and migration
- Culture conditions, growth curves and viable counts
- Genetic control, recombinant vectors and expression hosts
Scientific inquiry and assignment preparation
- Higher investigations, graphs, research and evaluation
- Gel electrophoresis, colorimetry and assay controls
Sustainability and interdependence
- Food security, sustainable yield and productivity
- Pigment separation, absorption and action spectra
- Light reactions and chloroplast energy coupling
- Carbon fixation, RuBisCO and carbon allocation
- Inbreeding, F1 hybrids and genetic selection
- Randomised replicated field trials and causal inference
- Weeds, diseases, pesticides and integrated protection
- Livestock welfare, behaviour and production trade-offs
- Parasitism, transmission and mutualism
- Social groups, kin selection and primate behaviour
- Genetic, species and ecosystem diversity
- Bottlenecks, fragmentation and invasive species
Scottish learning platform