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Biology Edexcel Paper 1 Summary.

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This document covers all the vital information required for the Biology Edexcel Paper 1 GCSE. It can be effectively used for any student, whether they are doing core science, combined science, or triple science. It contains all the necessary practicals and investigations for the paper and detailed descriptions of every section of each topic. Within this document are notes on the following topics: Key concepts in Biology, Cells and Control, Genetics, Natural Selection and Gene Modification, Health, Disease, and the Development of Medicines.

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Summarized whole book?
No
Which chapters are summarized?
All of paper 1 is covered.
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February 2, 2023
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Biology Checklist
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DYLAN ANDERSON




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,Contents
Paper 1...................................................................................................................................................2
Cells Structures & Processes (SB1).....................................................................................................2
Microscopes...................................................................................................................................2
Plant and Animal Cells...................................................................................................................4
Specialised cells.............................................................................................................................5
Inside bacteria...............................................................................................................................5
Enzymes and nutrition...................................................................................................................6
Testing foods.................................................................................................................................6
Enzyme action................................................................................................................................7
Transporting substances................................................................................................................8
Cells & Control (SB2)..........................................................................................................................8
Mitosis...........................................................................................................................................8
Growth in animals..........................................................................................................................9
Growth in plants............................................................................................................................9
Stem cells.......................................................................................................................................9
The brain......................................................................................................................................10
Brain and spinal cord...................................................................................................................10
The nervous system.....................................................................................................................11
The eye........................................................................................................................................12
Neurotransmission speeds...........................................................................................................13
Genetics (SB3)..................................................................................................................................14
Sexual and asexual reproduction.................................................................................................14
Meiosis.........................................................................................................................................14
DNA..............................................................................................................................................15
Protein synthesis..........................................................................................................................15
Genetic variants and phenotypes................................................................................................16
Mendel.........................................................................................................................................16
Alleles..........................................................................................................................................17
Inheritance...................................................................................................................................17
Multiple and missing alleles.........................................................................................................17
Gene mutation.............................................................................................................................17
Variation......................................................................................................................................18
Natural Selection & Genetic Modification (SB4)..............................................................................18
Evidence for human evolution.....................................................................................................18

, Darwin’s theory...........................................................................................................................19
Development of evolution theory................................................................................................19
Classification................................................................................................................................20
Breeds and varieties....................................................................................................................20
Tissue culture...............................................................................................................................21
Genes in Agriculture and Medicine..............................................................................................21
GM an Agriculture........................................................................................................................21
Fertilisers and biological control..................................................................................................22
Health, Disease, and the Development of Medicines (SB5).............................................................22
Health and Disease......................................................................................................................22
Non-communicable disease.........................................................................................................23
Cardiovascular disease.................................................................................................................23
Pathogens....................................................................................................................................24
Spreading pathogens...................................................................................................................24
Virus life cycles.............................................................................................................................25
Plant defences.............................................................................................................................26
Plant diseases..............................................................................................................................26
Physical and chemical barriers.....................................................................................................27
The immune system.....................................................................................................................27
Antibiotics....................................................................................................................................28
Monoclonal antibodies................................................................................................................28
Paper 2.................................................................................................................................................29
Plant Structures & Function (SB6)....................................................................................................29
Homeostasis (SB7)...........................................................................................................................29
Animal Exchange & Transport (SB8)................................................................................................29
Ecosystems & Material Cycles (SB9)................................................................................................29
Checklist..............................................................................................................................................29

Paper 1
Cells Structures & Processes (SB1)
Microscopes
Recall what an electron microscope is
An electron microscope has a higher resolution, it can see smaller subcellular structures, like
ribosomes, and magnification than a light microscope. It uses electron light beams.

Recall what is meant by an instrument’s resolution
The ability to distinguish between two points on an inch (the amount of detail).
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