DNA Extraction and Identification Virtual Lab
Follow eight steps of onion DNA extraction and identification, including filtration, alcohol precipitation and a diphenylamine colour test.
Open activity →Teaching resources
Molecular Biology and Genetics: DNA, Proteins and Gene Expression
Explore molecular biology and genetics through molecule building, DNA extraction, cell-division models and probability simulations. Find free activities on nucleic acids, proteins, ATP and gene expression.
Explore biology topics
Observe composition, structure, processes and evidence separately, then explain how they connect.
Nucleotide Builder and Two-Player Challenge
Assemble DNA and RNA nucleotides, build nucleic acid chains and explore complementary pairing in solo or two-player activities.
Open activity →Amino Acid Workshop: Structures and Peptide Bonds
Build amino acids, identify the amino group, carboxyl group and R group, observe peptide bond formation through condensation, and explore levels of protein structure.
Open activity →Mendelian Segregation Simulator
Draw alleles at random from two containers and compare genotype frequencies across small and large samples.
Open activity →Transcription and Translation in 3D — Draft
Follow transcription and translation step by step, comparing DNA, RNA, codons, tRNA and the growing peptide chain.
Open activity →ATP Structure and Energy Coupling: 3D Model
Compare ATP, ADP and AMP, follow hydrolysis and regeneration, and use a calcium pump model to explore energy coupling in active transport.
Open activity →Animal and Plant Cell Division
Follow genetic material replication and distribution, then compare cleavage in animal cells with new membrane and wall formation in plant cells.
Open activity →Nucleic Acid Workshop: Build DNA and RNA — Draft
Assemble nucleotides, connect single and complementary double strands, identify 5′ and 3′ ends, and compare DNA with RNA.
Open activity →Meiosis and Gamete Combinations
Track homologous chromosomes step by step and compare crossing over, chromosome orientation and gamete combinations.
Open activity →Light Switches: An Optogenetics Classroom
Change illumination and compare membrane potential in a virtual classroom connecting light sensing, gene expression and neuronal activity.
Open activity →Cell Organelles Working Together: Interactive Lesson
A 23-page interactive biology lesson with organelle 3D models, differential centrifugation, chloroplast observation and the secretory protein pathway. The activity interface is in Simplified Chinese.
Open activity →The Journey of a Secretory Protein
Follow protein synthesis, folding, processing, vesicle transport and exocytosis in a 3D classroom demonstration.
Open activity →DNA Methylation and Gene Expression: Turtle Evidence Activity
Compare research evidence from red-eared slider embryos incubated at 26 and 31 degrees Celsius, reading DNA methylation and gene expression at matched stages and sites.
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