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Life Sciences diagram templates
Phylogenetic trees, pathways, gene networks, anatomy.
Anatomy — brain regions
Major lobes and brain-stem regions.
Anatomy / body systemsAnatomy — kidney structure
Cortex, medulla, pelvis, vessels.
Anatomy / body systemsAnatomy — digestive tract
Mouth to anus, major organs labelled.
Anatomy / body systemsPedigree — autosomal recessive (CF)
Cystic fibrosis pedigree with two carrier parents.
Genetics pedigreePedigree — autosomal dominant (Huntington)
Huntington's disease pedigree — affected parent, 50% offspring affected.
Genetics pedigreePedigree — X-linked recessive
Classic X-linked recessive (e.g. hemophilia) pattern.
Genetics pedigreePedigree — three generations
Multi-generation pedigree showing inheritance across grandparents to grandchildren.
Genetics pedigreePedigree — deceased and proband markers
Demonstrates deceased and proband notation.
Genetics pedigreeCirculation — the double circuit of the human heart
Both circuits drawn as one closed loop with the pressures that make them work: right side 25/4 mmHg into the lungs, left side 120/8 into the aorta, the four valves in sequence, the SA and AV nodes that time them, and a cardiac output of 70 beats × 70 mL ≈ 4.9 L min⁻¹.
ScienceNephron — filtration, reabsorption and secretion
One nephron from afferent arteriole to collecting duct, with the Starling pressures that drive filtration (55 − 30 − 15 = 10 mmHg), a GFR of 125 mL min⁻¹ = 180 L a day, segment-by-segment reabsorption from the proximal tubule's 65% of sodium to ADH-controlled water recovery, and the 1.5 L that finally leaves.
ScienceGas exchange — the alveolus and its capillary
Diffusion across the 0.5 µm blood–gas barrier drawn with the partial pressures on both sides: O₂ down a 60 mmHg gradient from alveolar 100 to venous 40, CO₂ back down only 6 mmHg because it is twenty times more soluble, equilibrium reached in 0.25 s of a 0.75 s transit, and the V̇/Q̇ ratio that decides the arterial result.
ScienceDigestive tract — enzymes and where absorption happens
The gut from mouth to rectum with the absorption site marked for each class of nutrient: iron and calcium in the duodenum, sugars and amino acids in the jejunum, bile salts and vitamin B₁₂ in the terminal ileum, water and sodium in the colon — plus the pH each enzyme needs and the 30 m² of villous surface it all happens across.
ScienceNeuron — from synaptic input to transmitter release
One signal traced end to end: summation of EPSPs at the axon hillock, the −55 mV threshold, sodium influx to +40 mV and potassium efflux back, saltatory conduction at up to 100 m s⁻¹ between nodes of Ranvier, then calcium-triggered vesicle fusion across a 20 nm cleft with a 0.5 ms synaptic delay.
ScienceImmune response — barrier, innate, adaptive, memory
One infection followed from breach to memory: barriers, complement and phagocytes in the first hours, antigen carried to the lymph node and shown on MHC II, helper T cells licensing B cells, clonal expansion to antibody-secreting plasma cells with IgM by day 5–7, and the memory that turns the second exposure into IgG in two days.
SciencePhotosynthesis — light reactions and the Calvin cycle
Both halves on one canvas with the stoichiometry attached: water split at the oxygen-evolving complex to feed P680, electrons through plastoquinone and cytochrome b₆f pumping protons into a lumen at pH 4.5, ATP synthase at 4 H⁺ per ATP, P700 reducing NADP⁺, and the Calvin cycle spending 3 ATP and 2 NADPH per CO₂ fixed.
ScienceCellular respiration — glycolysis to the electron chain
Glucose to water in four stages with the ATP counted at each: 2 net plus 2 NADH from glycolysis in the cytosol, 2 NADH from the link reaction, 6 NADH, 2 FADH₂ and 2 GTP from two turns of the Krebs cycle, then oxidative phosphorylation at 2.5 ATP per NADH and 1.5 per FADH₂ for a total near 32.
ScienceFood web — a temperate lake through five trophic levels
A eutrophic lowland lake drawn as a web rather than a chain: phytoplankton and littoral macrophytes at 300 g C m⁻² yr⁻¹, three routes up through Daphnia, chironomids and zebra mussels, roach and perch feeding at more than one level, pike and heron on top, and the detrital loop that returns the nutrients.
ScienceAntibiotic resistance — how a resistant strain takes over
Selection drawn as a process rather than a warning poster: a resistant cell arising at about 10⁻⁹ per division or arriving ready-made on a plasmid, the course of treatment killing everything else, the survivor refilling the empty niche, and the MIC climbing from 0.5 to 64 mg L⁻¹ — with the stewardship and agricultural pressures that set the pace.
ScienceBlood glucose — the negative feedback loop
Both arms of the loop around a 4.0–5.5 mmol L⁻¹ set point: a meal pushing glucose up, β cells releasing insulin and GLUT4 pulling it into muscle and fat, then α cells and glucagon driving glycogenolysis and gluconeogenesis when it falls — with the two ways the loop breaks and the HbA1c threshold that detects them.
ScienceDose–Response with 95% Confidence Intervals
A four-parameter logistic drawn over the observed responses on a logarithmic concentration axis, with the observations carrying 95% confidence intervals that say so. Shows the two things a dose–response figure is usually wrong about: an unlabelled uncertainty, and a log axis whose base is never stated.
PlotRisk Matrix — Biosafety Level 2 Laboratory Risk Assessment
A BSL-2 risk assessment for a fictional viral-vector core covering biological, chemical, physical and ergonomic hazards: controls cut exposure from 87 to 40 (−54%), move eight of nine hazards down a band and leave every residual risk within the Medium appetite, the lentiviral needlestick highest at Medium 6. Illustrative register.
Risk matrixRoadmap — Biotech R&D Pipeline by Asset and Phase
A five-year R&D portfolio roadmap for a fictional biotech with one lane per asset — an oral MASH candidate in Phase 2b, an antibody in Phase 1 and an oncology programme in IND-enabling studies — plus CMC and medical affairs: 13 items (2 done, 4 in progress, 6 planned, 1 at risk) and 6 milestones by half-year, status date 10 Feb 2027. All 14 dependencies finish before their dependents start, with each data readout gating the next phase, and the longest chain runs from the Phase 2b study through readout and the end-of-Phase 2 meeting to Phase 3. Illustrative roadmap.
RoadmapConcept Map — Photosynthesis
Inputs, stages, and outputs of photosynthesis as a concept map.
MermaidPhylogenetic Tree (Newick)
A primate phylogeny — edit the nesting to build your own tree.
Phylogeny (Newick)Timeline — Antimicrobial Resistance
A century of antibiotic introductions set against the year resistance was first reported for each, with the discovery void and the post-2010 stewardship era drawn as separate bands.
Timeline (history)Causal DAG — Prescribing and Resistant Infection
Causal graph linking primary-care antibiotic prescribing to resistant urinary infection, with prior colonisation as a mediator and care-home residence as a confounder acting through both paths.
Causal DAGBiology — Hardy–Weinberg Equilibrium
Allele and genotype frequency relations for a non-evolving population.
LaTeX (KaTeX)Biology — Population Growth Models
Exponential and logistic growth with the carrying-capacity solution.
LaTeX (KaTeX)Biology — Enzyme Kinetics (Michaelis–Menten)
Rate equation, Lineweaver–Burk form and catalytic efficiency.
LaTeX (KaTeX)Biology — Membrane & Nernst Potential
Equilibrium potential and the Goldman–Hodgkin–Katz equation.
LaTeX (KaTeX)Biology — Lysozyme (PDB 1LYZ)
Hen egg-white lysozyme, a classic enzyme structure.
3D Molecules (3Dmol)Biology — Myoglobin (PDB 1MBN)
The first protein structure ever solved by X-ray crystallography.
3D Molecules (3Dmol)Biology — Prokaryote vs Eukaryote
Shared and distinct features of the two fundamental cell types.
Venn / EulerBiology — Biological Macromolecules
Carbohydrates, proteins and lipids and their conjugated overlaps.
Venn / EulerBiology — Carbon Cycle
Carbon flow through photosynthesis, respiration, decay and combustion.
Graphviz (DOT)Biology — Nitrogen Cycle
Fixation, nitrification, assimilation and denitrification steps.
Graphviz (DOT)Biology — Cellular Respiration
Glycolysis to the Krebs cycle to oxidative phosphorylation.
Graphviz (DOT)Biology — Food Web
Energy flow from producers through consumers to apex predators.
Graphviz (DOT)Biology — Linnaean Taxonomy
The biological classification hierarchy, Domain to Species.
Graphviz (DOT)Biology — Water Potential
Water potential, solute potential and the direction of osmosis.
LaTeX (KaTeX)Biology — Microscopy Magnification
Magnification relations and the scale-bar calculation.
LaTeX (KaTeX)Biology — Surface Area : Volume
SA:V ratios for a cube and sphere and why size limits exchange.
LaTeX (KaTeX)Biology — Mark–Recapture (Lincoln Index)
Estimating population size from a capture–recapture sample.
LaTeX (KaTeX)Biology — Biodiversity Indices
Simpson's and Shannon diversity indices.
LaTeX (KaTeX)Biology — Collagen Triple Helix (PDB 1CAG)
The triple-helix motif of the body's most abundant protein.
3D Molecules (3Dmol)Biology — Central Dogma
DNA → RNA → protein, with replication and reverse transcription.
Graphviz (DOT)Biology — Cell Cycle
G1 → S → G2 → M with the G0 resting state.
Graphviz (DOT)Biology — Glycolysis (overview)
Glucose to pyruvate with the net ATP/NADH yield.
Graphviz (DOT)Biology — Calvin Cycle
Carbon fixation, reduction and RuBP regeneration.
Graphviz (DOT)Biology — Double Circulation
Pulmonary and systemic circuits through the heart.
Graphviz (DOT)Biology — Reflex Arc
Stimulus to response through the spinal reflex pathway.
Graphviz (DOT)Biology — Immune Response
Innate and adaptive responses to a pathogen.
Graphviz (DOT)Biology — Vertebrate Classification
The five vertebrate classes under Phylum Chordata.
Graphviz (DOT)Biology — Plant, Animal & Fungal Cells
Comparing organelles across eukaryotic cell types.
Venn / EulerBiology — Selection & Mean Fitness
Mean population fitness and the change in allele frequency.
LaTeX (KaTeX)Biology — Respiratory Quotient
RQ and typical values for the major respiratory substrates.
LaTeX (KaTeX)Biology — Cardiovascular Relations
Cardiac output, blood pressure and ejection fraction.
LaTeX (KaTeX)Biology — Photosynthesis & Limiting Factors
Light/inverse-square relation, net vs gross, overall equation.
LaTeX (KaTeX)Biology — DNA Replication
Semi-conservative replication at the replication fork.
Graphviz (DOT)Biology — Mitosis
The stages of mitotic division.
Graphviz (DOT)Biology — Meiosis
Two divisions producing four haploid gametes.
Graphviz (DOT)Biology — Energy Flow & Trophic Levels
Energy transfer up a food chain with ~10% efficiency.
Graphviz (DOT)Biology — Nephron Function
Filtration, reabsorption and secretion along the nephron.
Graphviz (DOT)Biology — Blood Glucose Regulation
Insulin/glucagon negative-feedback control of blood sugar.
Graphviz (DOT)Biology — Natural Selection
The Darwinian loop of variation, selection and inheritance.
Graphviz (DOT)Biology — Gas Exchange (Alveolus)
Diffusion of O2 and CO2 across the alveolar membrane.
Graphviz (DOT)Biology — Plant Kingdom
Major plant groups by structural innovation.
Graphviz (DOT)Biology — Blood Clotting Cascade
The simplified clotting pathway to a fibrin clot.
Graphviz (DOT)Biology — Catalase (PDB 1DGF)
The enzyme that decomposes hydrogen peroxide.
3D Molecules (3Dmol)Biology — SARS-CoV-2 Main Protease (PDB 6LU7)
The main protease (Mpro) — a key antiviral drug target.
3D Molecules (3Dmol)Biology — Pedigree: autosomal dominant
An autosomal dominant trait appearing in every generation.
Genetics pedigreeBiology — Phylogeny: vertebrate classes
A cladogram of the major vertebrate groups (branch lengths ≈ MYA).
Phylogeny (Newick)Biology — Phylogeny: land plants
Relationships among major plant lineages (branch lengths ≈ MYA).
Phylogeny (Newick)Biology — Chi-square Test (Genetics)
Testing observed vs expected genetic ratios.
LaTeX (KaTeX)Biology — Ecological Productivity
Gross and net primary productivity and transfer efficiency.
LaTeX (KaTeX)Biology — Serial Dilution & Counting
Dilution factors and viable cell counts.
LaTeX (KaTeX)Biology — Protein Synthesis
Transcription and translation from gene to polypeptide.
Graphviz (DOT)Biology — Krebs Cycle (overview)
The citric-acid cycle and its reduced-coenzyme yield.
Graphviz (DOT)Biology — Ecological Succession
Primary succession from bare rock to climax community.
Graphviz (DOT)Biology — PCR Cycle
The three temperature steps of the polymerase chain reaction.
Graphviz (DOT)Biology — Animal Kingdom
Major animal phyla split into invertebrates and chordates.
Graphviz (DOT)Biology — Thyroid Hormone Feedback
Negative-feedback control of thyroid hormone.
Graphviz (DOT)Biology — Nervous System Organisation
Divisions of the vertebrate nervous system.
Graphviz (DOT)Biology — Eutrophication
How nutrient runoff leads to oxygen depletion.
Graphviz (DOT)Biology — Ubiquitin (PDB 1UBQ)
The compact regulatory protein that tags others for degradation.
3D Molecules (3Dmol)Biology — HIV-1 Protease (PDB 1HVR)
A landmark structure-based drug-design target.
3D Molecules (3Dmol)Biology — Anatomy: Lungs & Airways
The lungs, bronchi and alveolar regions labelled.
Anatomy / body systemsBiology — Anatomy: Kidney
Cortex, medulla and the renal vessels labelled.
Anatomy / body systemsBiology — Anatomy: Brain
Major brain regions labelled.
Anatomy / body systemsBiology — Anatomy: Digestive System
The alimentary canal from mouth to intestine.
Anatomy / body systemsBiology — Phylogeny: mammalian orders
Relationships among several mammalian orders (branch lengths ≈ MYA).
Phylogeny (Newick)Biology — Gene Regulatory Network
Activators and repressors controlling gene expression.
Cytoscape (Network)Biology — Metabolic Network (Glycolysis)
Glycolytic intermediates linked by their enzymes.
Cytoscape (Network)Biology — Protein Interaction Network
DNA-damage response protein–protein interactions.
Cytoscape (Network)Biology — MAPK Signalling Cascade
Growth-factor signal relayed to the nucleus.
Cytoscape (Network)Biology — Food Web Network
An interactive predator–prey food web.
Cytoscape (Network)Biology — Neural Circuit Network
A simple sensory-to-motor neural circuit.
Cytoscape (Network)Biology — Ecosystem Nutrient Cycling
Carbon/nutrient flow among trophic compartments.
Cytoscape (Network)Biology — Allele Frequencies from Counts
Computing allele frequencies from genotype counts.
LaTeX (KaTeX)Biology — Population Growth Rates
Per-capita rate, finite growth rate and doubling time.
LaTeX (KaTeX)