Images & Animations — AQA A-level Biology | Random Walker

Browse and download all diagrams and animations used across the site. Use the search box to filter by name, or use the type and topic filters.

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ATP Structure

ATP Structure SVG

ATP Hydrolysis & Condensation

ATP Hydrolysis & Condensation SVG

Nucleotide Structure

Nucleotide Structure SVG

Phosphodiester Bond

Phosphodiester Bond SVG

Eukaryotic Cell

Eukaryotic Cell SVG

Amino Acid Structure

Amino Acid Structure SVG

Peptide Bond

Peptide Bond SVG

Primary Protein Structure

Primary Protein Structure SVG

Alpha Helix

Alpha Helix SVG

Beta Pleated Sheet

Beta Pleated Sheet SVG

Tertiary Protein Structure

Tertiary Protein Structure SVG

Quaternary Protein Structure

Quaternary Protein Structure SVG

Biuret Test

Biuret Test SVG

SA:V Ratio — Cube and Cuboid Comparison

SA:V Ratio — Cube and Cuboid Comparison SVG

Amoeba — Gas Exchange

Amoeba — Gas Exchange SVG

Insect Tracheal System

Insect Tracheal System SVG

Fish Gill Structure

Fish Gill Structure SVG

Counter-current Flow in Fish Gills

Counter-current Flow in Fish Gills SVG

Plant Leaf Gas Exchange

Plant Leaf Gas Exchange SVG

Human Lung Structure

Human Lung Structure SVG

Alveolar Adaptations

Alveolar Adaptations SVG

Inspiration (Breathing In)

Inspiration (Breathing In) SVG

Expiration (Breathing Out)

Expiration (Breathing Out) SVG

Digestive System Structure

Digestive System Structure SVG

Carbohydrate Digestion

Carbohydrate Digestion SVG

Protein Digestion

Protein Digestion SVG

Lipid Digestion

Lipid Digestion SVG

Micelle Structure

Micelle Structure SVG

Villi and Microvilli

Villi and Microvilli SVG

Glucose / Amino Acid Absorption (Co-transport)

Glucose / Amino Acid Absorption (Co-transport) SVG

Lipid Absorption

Lipid Absorption SVG

Antigen

Antigen SVG

Antigen Variability

Antigen Variability SVG

Phagocytosis

Phagocytosis SVG

Cellular Response (T Lymphocytes)

Cellular Response (T Lymphocytes) SVG

B Cell with Antibodies

B Cell with Antibodies SVG

Humoral Response (B Lymphocytes)

Humoral Response (B Lymphocytes) SVG

Antibody Structure

Antibody Structure SVG

Primary vs Secondary Immune Response

Primary vs Secondary Immune Response SVG

HIV Structure

HIV Structure SVG

HIV Replication in Helper T Cells

HIV Replication in Helper T Cells SVG

Antibody-Drug Conjugate (Cancer Treatment)

Antibody-Drug Conjugate (Cancer Treatment) SVG

Pregnancy Test (Monoclonal Antibody)

Pregnancy Test (Monoclonal Antibody) SVG

ELISA Test (Indirect)

ELISA Test (Indirect) SVG

Heart Structure

Heart Structure SVG

Cardiac Cycle

Cardiac Cycle SVG

Artery vs Vein Structure

Artery vs Vein Structure SVG

Capillary Structure

Capillary Structure SVG

Double Circulatory System

Double Circulatory System SVG

Haemoglobin Structure

Haemoglobin Structure SVG

Tissue Fluid Formation (Arterial End)

Tissue Fluid Formation (Arterial End) SVG

Tissue Fluid Formation (Venous End)

Tissue Fluid Formation (Venous End) SVG

Lymphatic Return

Lymphatic Return SVG

Xylem Structure

Xylem Structure SVG

Phloem Structure

Phloem Structure SVG

Potometer

Potometer SVG

Chloroplast Structure

Chloroplast Structure SVG

Photosynthesis Overview

Photosynthesis Overview SVG

Light Dependent Reaction

Light Dependent Reaction SVG

Photolysis

Photolysis SVG

ATP Synthesis (Photosynthesis)

ATP Synthesis (Photosynthesis) SVG

NADPH Formation

NADPH Formation SVG

Cyclic Photophosphorylation

Cyclic Photophosphorylation SVG

Calvin Cycle - Carbon Fixation

Calvin Cycle - Carbon Fixation SVG

Calvin Cycle - Reduction

Calvin Cycle - Reduction SVG

Calvin Cycle - Regeneration

Calvin Cycle - Regeneration SVG

Light Intensity Graph

Light Intensity Graph SVG

CO2 Concentration Graph

CO2 Concentration Graph SVG

Temperature Graph

Temperature Graph SVG

Absorption Spectrum

Absorption Spectrum SVG

DCPIP Experiment

DCPIP Experiment SVG

Chromatography

Chromatography SVG

Respiration Overview

Respiration Overview SVG

Glycolysis

Glycolysis SVG

Link Reaction

Link Reaction SVG

Krebs Cycle

Krebs Cycle SVG

Oxidative Phosphorylation - Hydrogen Carriers

Oxidative Phosphorylation - Hydrogen Carriers SVG

Oxidative Phosphorylation - Electron Transport Chain

Oxidative Phosphorylation - Electron Transport Chain SVG

Oxidative Phosphorylation - Chemiosmosis

Oxidative Phosphorylation - Chemiosmosis SVG

Oxidative Phosphorylation - Oxygen Final Acceptor

Oxidative Phosphorylation - Oxygen Final Acceptor SVG

Anaerobic Respiration Overview

Anaerobic Respiration Overview SVG

Anaerobic Respiration - Fermentation

Anaerobic Respiration - Fermentation SVG

Energy Transfer Overview

Energy Transfer Overview SVG

Energy - GPP & NPP

Energy - GPP & NPP SVG

Energy - Consumer Net Production

Energy - Consumer Net Production SVG

Nitrogen Cycle Overview

Nitrogen Cycle Overview SVG

Nitrogen Fixation

Nitrogen Fixation SVG

Ammonification

Ammonification SVG

Nitrification

Nitrification SVG

Denitrification

Denitrification SVG

Phosphorus Cycle

Phosphorus Cycle SVG

Eutrophication

Eutrophication SVG

Kidney Structure

Kidney Structure SVG

Nephron Structure

Nephron Structure SVG

Ultrafiltration

Ultrafiltration SVG

Glomerular Capillary Wall

Glomerular Capillary Wall SVG

Proteins Remain in Blood

Proteins Remain in Blood SVG

PCT Overview

PCT Overview SVG

PCT Adaptations

PCT Adaptations SVG

PCT - Active Transport

PCT - Active Transport SVG

PCT - Co-transport

PCT - Co-transport SVG

PCT - Facilitated Diffusion & Osmosis

PCT - Facilitated Diffusion & Osmosis SVG

Loop of Henle Structure

Loop of Henle Structure SVG

Loop of Henle - Na+ Transport

Loop of Henle - Na+ Transport SVG

Loop of Henle - Water Movement

Loop of Henle - Water Movement SVG

Loop of Henle - Concentration Gradient

Loop of Henle - Concentration Gradient SVG

Loop of Henle - Na+ Diffusion

Loop of Henle - Na+ Diffusion SVG

DCT & Collecting Duct - Water Reabsorption

DCT & Collecting Duct - Water Reabsorption SVG

ADH - Osmoreceptors & Hypothalamus

ADH - Osmoreceptors & Hypothalamus SVG

ADH - Aquaporins & Permeability

ADH - Aquaporins & Permeability SVG

Kidney Osmoregulation Summary

Kidney Osmoregulation Summary SVG

Sarcomere VIDEO

Watch on YouTube

Sliding Filament Theory VIDEO

Watch on YouTube

Upper Arm Muscles VIDEO

Watch on YouTube

Neurone Structure

Neurone Structure SVG

Resting Potential

Resting Potential SVG

Resting to Action Potential

Resting to Action Potential SVG

Depolarisation

Depolarisation SVG

Repolarisation

Repolarisation SVG

Myelin & Saltatory Conduction

Myelin & Saltatory Conduction SVG

Nerve Impulse Animation VIDEO

Watch on YouTube

Synapse Structure

Synapse Structure SVG

Synaptic Transmission Animation VIDEO

Watch on YouTube

Spatial Summation

Spatial Summation SVG

Temporal Summation

Temporal Summation SVG

Synapse Animation VIDEO

Watch on YouTube

Addition Mutation VIDEO

Watch on YouTube

Deletion Mutation VIDEO

Watch on YouTube

Substitution Mutation VIDEO

Watch on YouTube

Duplication Mutation VIDEO

Watch on YouTube

Inversion Mutation VIDEO

Watch on YouTube

Translocation Mutation VIDEO

Watch on YouTube

Gene Expression Overview

Gene Expression Overview SVG

Gene Technology Overview

Gene Technology Overview SVG

RNA Interference

RNA Interference SVG

Methylation

Methylation SVG

Acetylation

Acetylation SVG

Deacetylation

Deacetylation SVG

Gene Regulation Overview

Gene Regulation Overview SVG

Epigenetics Overview

Epigenetics Overview SVG

Oestrogen Receptor

Oestrogen Receptor SVG

PCR

PCR SVG

DNA Probe

DNA Probe SVG

Crime Scene (Genetic Fingerprinting)

Crime Scene (Genetic Fingerprinting) SVG

Recombinant DNA - In Vivo

Recombinant DNA - In Vivo SVG

Recombinant DNA - In Vivo 2

Recombinant DNA - In Vivo 2 SVG

Gene Machine

Gene Machine SVG

Reverse Transcriptase

Reverse Transcriptase SVG

Tumour Suppressor / Oncogene

Tumour Suppressor / Oncogene SVG

Tumour / Cancer 2

Tumour / Cancer 2 SVG

Proto-oncogene

Proto-oncogene SVG

Proto-oncogene 2

Proto-oncogene 2 SVG

Proteome

Proteome SVG

Stem Cell

Stem Cell SVG

Xylem Vessel Structure

Xylem Vessel Structure SVG

Phloem Structure

Phloem Structure SVG

Phloem Cell Detail

Phloem Cell Detail SVG

Potometer

Potometer SVG

Mass Flow Hypothesis Animation VIDEO

Watch on YouTube