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OCR Biology: Home

Featured topics of the month:

Biological Membranes

10 lessons • 1h25

Cell Division & Organisation

13 lessons • 1h57

A: Plant & Animal Responses

13 lessons • 1h52

A: Photosynthesis

9 lessons • 1h17

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Progress Overview

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Introduction to Statistics
Averages
P-Values
Standard Deviation
Choosing a Statistical Test
Chi-squared Test
Calculating Standard Deviation
Student's t-Test
Correlation Coefficient
Percentages
Significant Figures
Algebraic Equations
Calculating Rates
Appropriate Units
Standard Form
Rearrange Equations
Prisms
Circles & Spheres
Uncertainties
Ratios
Estimation
Orders of Magnitude
Probability
Algebraic Symbols
Tables & Bar Charts
Drawing Graphs
Scatter Diagrams
Histograms
Tangents
Straight Line Graphs
Dilutions
Biological Drawings
Colorimetry
The Potometer
Light Microscopes
Slide Preparation
Electrophoresis
Aseptic Technique
Ethics - Organisms
#1 Root Tip Squash
#2 Dissection
#3 Investigating Populations - Sampling (DUPLICATE)
#4 Enzyme-Substrate Reactions
#5 Membrane Permeability
#6 Chromatography
Microscopes
Laser Scanning Confocal Microscope
Magnification
Eukaryotic Cell Structure
Eukaryotic Cell Organelles 1
Eukaryotic Cell Organelles 2
Eukaryotic Cell Organelles 3
Production & Secretion of Proteins
Cytoskeleton
Prokaryotic Cell Structure
Prokaryotes vs Eukaryotes
Introduction to Water
Properties of Water
The Biological Molecules
Condensation & Hydrolysis Reactions
Monosaccharides & Disaccharides
Ribose
Polymers of Carbohydrates
Triglycerides
Phospholipids & Cholesterol
Introduction to Proteins
Protein Structure
Fibrous & Globular Proteins
Cations & Anions
Qualitative Tests for Molecules
Nucleic Acids
Structure & Function of DNA
Purines & Pyrimidines
ATP
Purification of DNA by Precipitation
Semi-conservative DNA Replication
Proving DNA Replication is Semi-conservative
Transcription
Translation
DNA is Universal, Non-overlapping & Degenerate
DNA, Genes & Chromosomes
Gene Mutations
Enzymes
Protein Specificity
Intracellular & Extracellular Enzymes
Enzyme Reactions - Temperature
The Temperature Coefficient (Q10)
Enzyme Reactions - pH
Enzyme & Substrate Concentration
Enzyme Reactions - Inhibitors
Types of Enzyme Inhibition
Coenzymes, Cofactors & Prosthetic Groups
Roles of Cell Membranes
Cell Membranes
Factors Affecting Membrane Permeability
Diffusion
Facilitated Diffusion
Active Transport & Co-transport
Exocytosis & Endocytosis
Osmosis
Diffusion Rates in Model Cells
Effects of Osmosis on Plant & Animal Cells
Cell Cycle & Mitosis
Mitosis
Introduction to Meiosis
Before Meiosis
Meiosis
Meiosis & Genetic Variation
Cell Organisation
Specialised Animal Cells
Specialised Plant Cells
Plant & Animal Tissues
Stem Cells
Stem Cell Differentiation
Stem Cells & Medicine
Surface Area to Volume Ratio
Gas Exchange in Humans
Mammalian Gaseous Exchange System
Mechanics of Breathing
Ventilation in Humans
Gas Exchange in Insects & Fish
Ventilation in Bony Fish
Blood Vessels
Circulatory Systems
The Formation & Return of Tissue Fluid
The Human Heart
Control of Heart Rate
Electrocardiogram (ECG)
Cardiac Cycle Graphs
Haemoglobin & Bohr Effect
The Chloride Shift & the Bohr Effect
Comparing Haemoglobin in Different Organisms
Adult & Fetal Haemoglobin
Distribution of Xylem & Phloem
The Xylem
The Phloem
Translocation
Apoplast, Symplast & Vacuolar Pathways
Gas Exchange in Plants
Hydrophytes
Introduction to the Immune System
Communicable Diseases
Viruses
Plant Defences Against Pathogens
Non-Specific Defence Against Pathogens
Blood Clotting
Immune System Key Terms
Phagocytosis
T-Lymphocytes
B-Lymphocytes
Memory Cells, Agglutinins & Anti-toxins
Antibodies
Primary & Secondary Response
Active & Passive Immunity
Autoimmune Diseases
Vaccines
Possible Sources of Medicines
Personalised Medicines & Synthetic Biology
Antibiotics
Types of Biodiversity
Investigating Diversity
Investigating Populations - Sampling
Species Richness Vs. Species Evenness
Simpson's Index of Diversity
Calculating Genetic Biodiversity
Factors Affecting Biodiversity
Reasons for Maintaining Biodiversity
In Situ & Ex Situ Conservation
Conservation Agreements
Classification
Phylogeny
Features of the Five Kingdoms
Evidence for Evolution
Genetic Diversity & Adaptation
Directional & Stabilising Selection
Variation
Convergent Evolution
Evolution of Resistance
A: Log Functions
A: Microbial Growth
A: Logarithmic Scale
#7 Antimicrobial Substances
#8 Water Potential of Plant Tissue
#9 Quantitative Tests for Molecules
#11 Effects of Exercise on the Cardiovascular System
#12 Rate of Respiration
Second Messengers (cAMP)
Positive & Negative Feedback
Control of Body Temperature
Endotherms & Ectotherms
Controlling Heart Rate
The Liver
Histology of the Liver
The Ornithine Cycle
The Kidneys
Histology of the Kidney
Ultrafiltration
Selective Reabsorption
The Loop of Henle
Osmoregulation & Antidiuretic Hormone (ADH)
Kidney Failure
Treatments of Kidney Failure
Excretory Products
Introduction to the Nervous System
Receptors & Neurones
Resting Potential
Action Potentials
All or Nothing Law
Myelination & Saltatory Conduction
Pacinian Corpuscle
Synapses
The Role of Synapses
The Pancreas & Adrenal Glands
Histology of the Pancreas
Control of Blood Glucose
Control of Insulin Secretion
Glycogenolysis, Glycogenesis & Gluconeogenesis
Insulin, Glucagon & Adrenaline
Diabetes
Treatments of Diabetes Mellitus
Plant Responses - Growth Hormones
Plant Responses to Herbivory
Apical Dominance
Summary of Plant Hormones
Reflexes
Fight or Flight Response
The Human Brain
Neuromuscular Junctions
Skeletal (Voluntary) Muscle
Sliding Filament Theory
Sarcomere Contraction
ATP & Muscle Contraction
Types of Muscle
Introduction to Photosynthesis
The Chloroplast
Photosystems
The Light Dependent Reaction
Cyclic Photophosphorylation
Chemiosmotic Theory
The Light Independent Reaction (The Calvin Cycle)
Limiting Factors of Photosynthesis
Introduction to Respiration
Glycolysis
The Link Reaction
Krebs Cycle
Oxidative Phosphorylation
Anaerobic Respiration - Glycolysis
Respiratory Substrates
Respiratory Quotient
Mitochondria
Transcription Factors
The Lac Operon
Mutations
Effects of Mutations
Homeobox Genes
Apoptosis
Inheritance Key Terms
Monohybrid Inheritance
Dihybrid Inheritance
Codominance & Multiple Alleles
Autosomal Linkage
Sex Linkage
Epistasis
Normal Phenotypic Ratios
Non-Normal Phenotypic Ratios
Random Fertilisation
Genetic Bottlenecks & the Founder Effect
Genetic Drift
Population Key Terms
The Hardy-Weinberg Principle
Speciation
Artificial Selection
Comparing Genomes
DNA Profiling
Genome Projects
Isolating Target Genes
Inserting Target Genes
Marker Genes
Polymerase Chain Reaction (PCR)
Gene Therapy
Summary of Gene Technology
Genetically Modified Organisms
Natural Plant Cloning
Artificial Plant Cloning
Cloning Animals
Advantages & Disadvantages of Cloning
Microorganisms & Biotechnology
Batch & Continuous Culture
Immobilised Enzymes
Introduction to Ecosystems
Productivity
Energy Transfer through Ecosystems
Increasing Energy Transfer Efficiency
Measuring Biomass
Succession
Types of Succession
The Nitrogen Cycle
The Carbon Cycle
Abundance & Distribution of Organisms
The Niche Concept
Conservation & Preservation
Managing Ecosystems
Transects & Quadrats
Ecosystem Management
Environmentally Sensitive Ecosystems
AS Paper 1
AS Paper 2
A Paper 1
A Paper 2
A Paper 3
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AS Paper 2
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AS Paper 2
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AS Paper 2
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A Paper 3
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AS Paper 2
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A Paper 3
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AS Paper 2
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A Paper 3
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AS Paper 2
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A Paper 3
AS Paper 1
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A Paper 3

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This is the Techniques content.

Live Classes

Tuesday 3rd December

  • 5pm | Meiosis & Genetic Variation (AS)

Thursday 5th December

  • 5pm | Plant Hormones (IAA) (A Level)

Join Live Watch Recordings

Tuesday 10th December

  • 5pm | Diffusion & Osmosis (AS)

Thursday 12th December

  • 5pm | Muscle Structure (A Level)

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Tuesday 17th December

  • 5pm | Facilitated Diffusion & Active Transport (AS)

Thursday 19th December

  • 5pm | Sliding Filament Theory (A Level)

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Study Plans

Year 12 - AS Year 13 - A Level Resit Students
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