Biology

AQAOCR GatewayEdexcel

Paper 1

1. Cell biology

Eukaryotic and prokaryotic cells 10:27
Specialised Cells 15:11
Orders of Magnitude & Standard Form 16:34
Microscopes and Magnification 18:48
Culturing Microorganisms 09:40
Chromosomes and Mitosis 08:50
Stem Cells 15:01
Diffusion 19:27
Osmosis 10:11
Active Transport 08:03

2. Organisation

An Introduction to Enzymes 16:30
Enzymes in the digestive system 11:56
Cardiovascular disease 09:02
The Circulatory System 11:20
Health and risk factors 12:44
Transpiration in plants 10:43
Organisation in plants 05:07

3. Infection and response

Preventing the spread of pathogens 14:35
Bacterial, fungal, viral and protist diseases 11:50
Immunity and vaccination 13:15
Fighting diseases with drugs 14:15
Monoclonal antibodies 07:38
Plant diseases and defence responses 08:50

4. Bioenergetics

Photosynthesis 08:10
Investigating the rate of photosynthesis 08:03
The Rate of Photosynthesis – Limiting Factors 08:15
Respiration and Metabolism 07:33
The effect of exercise on the body 05:55

Paper 2

5. Homeostasis and response

The Nervous System 08:33
The Brain 03:37
The Eye 07:31
Controlling body temperature 09:07
Adrenaline and Thyroxine 06:32
Controlling Blood Glucose 08:43
Maintaining water and nitrogen balance 12:10
Hormones in human reproduction 06:46
Plant hormones: Coordination and use 08:27

6. Inheritance, variation and evolution

Genetic Inheritance 10:22
Asexual vs sexual reproduction and meiosis 08:16
Reproducing both ways 06:14
DNA and the Genome 02:41
DNA Structure and Protein Synthesis 08:38
Inherited disorders – Polydactyly 09:47
Inherited disorders – Cystic Fibrosis 11:50
Screening for genetic disorders 04:32
Natural Selection 10:39
Selective Breeding 04:28
Genetic Engineering 06:09
The History of Genetics 08:31
Cloning 07:16
Theories of Evolution and Speciation 12:51
Evidence of Evolution and Extinction 07:05
Classification and Evolutionary Trees 08:44

7. Ecology

Communities and Interdependence 08:16
Adaptations 06:38
Measuring the Distribution of Organisms 06:02
Cycling in ecosystems 06:44
Rates of decomposition 12:08
Impact of environmental change 07:55
Human impact on the environment 13:09
Trophic levels in an ecosystem 05:43
Sustainable food production 06:27
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