Biology

AQAOCR GatewayEdexcel

Cell level systems

Eukaryotic and Prokaryotic Cells 10:27
Orders of Magnitude and Standard Form 16:34
Microscopes and Magnification 15:50
Microscope Drawing and Maths Skills 15:13
DNA 03:02
Protein Synthesis 06:44
Enzymes 13:26
PAG Investigating Enzymes and Calculating the Rate of Reaction 07:08
Respiration 08:52
PAG Breakdown and Testing of Biological Molecules 11:55
The Physiological Effects of Exercise 09:56
Photosynthesis 11:51
PAG Investigating the rate of photosynthesis 09:48
Limiting Factors in Photosynthesis 08:14

Scaling up

Exchange Surfaces and Diffusion 15:06
Osmosis including PAG ‘Effect of water potentials on potato’ 08:27
Active Transport 06:40
Specialised Cells 12:52
Mitosis 08:50
Stem Cells 09:50
The Circulatory System 11:20
Plant Tissues 09:22
Transpiration 10:43

Organism level systems

The Nervous System 08:02
The Brain 06:28
The Eye 07:15
The Endocrine System 03:48
Human Reproduction 07:52
Adrenaline and Thyroxine 08:50
Controlling Blood Glucose 03:50
Controlling Body Temperature 09:07
Controlling Water: The Excretory System 08:58
Plant Hormones 05:55

Community level systems

Interdependence 09:44
Pyramids of Biomass and Biomass Transfer 04:42
Nutrient Cycling 12:47
Practical Activity Group (PAG) Sampling 06:02

Genes, inheritance and selection

Variation and Mutations 14:34
Sexual and Asexual Reproduction and Meiosis 08:16
Inheritance 10:41
Fractions, Ratios, Proportion and Probability of Inheriting Diseases 11:14
The History of Genetics 09:27
Natural Selection 04:53
Theories of Evolution: Darwin & Wallace 07:23
Evidence of Evolution and Extinction 06:06
Classification 09:03

Global challenges

Biodiversity 12:30
Sampling Techniques 07:20
Monitoring Pollution and Biodiversity 03:41
Food Security and Sustainable Production 07:26
Selective Breeding 06:29
Genetic Engineering 10:37
Preventing The Spread of Pathogens 14:55
Preventing and Treating Communicable Disease 06:26
Culturing Microorganisms 07:24
Communicable Diseases in Humans and Plants 11:54
Plant Defences and Diagnosis 08:02
Immunity and Vaccination 10:05
Monoclonal Antibodies 07:38
Developing New Drugs 10:19
Health, Disease and Risk Factors 11:59
Cardiovascular Disease (CVD) 09:02
Modern Advancements in Medicine 12:34
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