Plant and Animal Cells: 3D Observation Lab
Rotate, section and isolate cell structures, then compare plant and animal cells to connect their structures with their functions.
Open activity →Teaching resources
Free Interactive 3D Biology Models
Explore online biology models for teaching cells, anatomy and biological processes. Rotate, compare and inspect structures in your browser.
Explore biology topics
Choose a topic, open a model and use observation and comparison to support an explanation.
3D Eye Anatomy and Image Formation
Explore a full cross-section with 16 types of interactive structures. Use a fixed image plane to compare normal vision, refractive and axial myopia or hyperopia, and their correction.
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 →Biology Model Universe: Interactive 3D Teaching Models
Find biology models by teaching level and topic, then rotate and zoom them in an observation workspace and view their descriptions and review status.
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 →Meet the Cell Factory: Explore Animal Cell Organelles
Find nine glowing hotspots in an animated animal cell, where personified characters introduce organelle structures and functions.
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 →Cell Membrane: 3D Fluid Mosaic Model
Explore phospholipids, the lipid bilayer and membrane fluidity through a rotatable, step-by-step 3D model.
Open activity →3D Digestive System Classroom
Follow food through the digestive system and compare chewing, stomach mixing, bile emulsification, digestion and absorption.
Open activity →How Hearing Works: 3D Ear Lab
Explore outer, middle and inner ear structures and follow sound waves, mechanical vibrations and neural signals through five stages.
Open activity →Predator–Prey Populations: Wolves and Moose Data Activity
Explore 47 years of Isle Royale wolf and moose monitoring records alongside climate, winter tick and food evidence to discuss ecosystem stability.
Open activity →How Fish Live Underwater: 3D Observation Lab
Explore fish structures, mouth and operculum movements, gas exchange at the gills, fins and aquatic adaptations.
Open activity →Paramecium Structure and Responses
Explore a 3D paramecium, separate its structures and change stimuli to observe directional responses.
Open activity →Levels of Organization in an Orange Plant
Explore biological organization from a whole orange plant to organs, tissues and cells.
Open activity →Levels of Organization in Animals
Explore the human body, digestive system, stomach, tissues and cells in a 3D teaching model.
Open activity →Human Double Circulation Explorer — Draft
Trace a blood particle through pulmonary and systemic circulation, inspect heart chambers and valves, and pause or advance step by step.
Open activity →Mitosis Step by Step
Observe chromatin condensation and compare the stages of animal and plant cell division in 3D.
Open activity →Cell Organelles: Explore and Compare
Switch between plant and animal cells, separate and enlarge organelles, and compare their structures and roles.
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 →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 →Meiosis and Gamete Combinations
Track homologous chromosomes step by step and compare crossing over, chromosome orientation and gamete combinations.
Open activity →Synapses and Signal Transmission
Explore synaptic structures, observe neurotransmitter release and compare what changes when receptors are blocked.
Open activity →Bones, Joints and Muscles Virtual Lab
Explore bones and joints, test tendon attachments and compare biceps and triceps coordination during elbow movement.
Open activity →Nephron Explorer: Filtration and Reabsorption
Follow the glomerulus, Bowman's capsule, and renal tubule to see where filtration and reabsorption occur.
Open activity →Why Birds Can Fly: 3D Pigeon Anatomy
Explore the pigeon skeleton, breast muscles and air-sac ventilation, then try classroom quizzes and a flight challenge.
Open activity →Prokaryotic Cells Interactive Classroom — Preview
Compare E. coli and cyanobacteria with eukaryotic cells, focusing on the nucleoid, nuclear envelope and cell classification.
Open activity →Breathing and Gas Exchange: 3D Respiratory Lab
Explore the airways, lungs and diaphragm, compare breathing movements and examine gas exchange at the alveoli.
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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