This fully editable PowerPoint presentation covers the entire of Topic 8 from the Edexcel Biology B A Level course. How are mutations the source of new variations and how do the processes of random assortment and crossing over during meiosis give rise to new combinations of alleles in gametes? How does random fertilisation during sexual reproduction bring about genetic variation? Understand the terms ‘genotype and phenotype’,’ homozygote and heterozygote’, ‘dominance’, ‘recessive’, ‘codominance’ and ‘multiple alleles’. Be able to construct genetic crosses and pedigree diagrams. Can you explain sex linkage on the X chromosome, including haemophilia in Humans? Can you explain the inheritance of two non-interacting unlinked genes? Do you understand that autosomal linkage results from the presence of alleles on the same chromosome and that the results of crosses can be explained by the events of meiosis, including black/grey body and long/vestigial wing in Drosophila? Can you use the chi squared test to test the significance of the difference between observed and expected results? Understand that selection pressures acting on the gene pool change allele frequencies in the population, including: ●Stabilising selection maintaining continuity in a population ●Disruptive selection leading to changes or speciation. Understand that sometimes changes in allele frequencies can be the result of chance and not selection, including genetic drift. Understand that allele frequencies can be influenced by: ● population bottlenecks ● founder effect. Understand how the Hardy-Weinberg equation can be used to monitor changes in the allele frequencies in a population.

A Level Biology Topic 7 - Modern Genetics Edexcel Biology B PowerPoint presentation of over 100 slides covering the whole topic This topic builds on the knowledge of nucleic acids and proteins and how they are involved in gene expression. Knowledge of epigenetics, the use of stem cells and how these are contributing to medical advances are considered. The ethical implications of the use of gene technology in scientific developments are discussed. 7.1 Using gene sequencing 7.2 Factors affecting gene expression 7.3 Stem cells 7.4 Gene technology

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the first topic - Section 2c Biological Molecules Section 2c Biological Molecules 2.7 Identify the chemical elements present in carbohydrates, proteins and lipids (fats and oils). 2.8 Describe the structure of carbohydrates, proteins and lipids as large molecules made up from smaller basic units: starch and glycogen from simple sugars, protein from amino acids, and lipid from fatty acids and glycerol. 2.9 Practical: investigate food samples for the presence of glucose, starch, protein and fat. 2.10 Understand the role of enzymes as biological catalysts in metabolic reactions. 2.11 Understand how temperature changes can affect enzyme function, including changes to the shape of active site. 2.12 Practical: investigate how enzyme activity can be affected by changes in temperature. 2.13 Understand how enzyme function can be affected by changes in pH altering the active site. 2.14B Practical: investigate how enzyme activity can be affected by changes in pH. (In orange) The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

This PowerPoint covers every topic, every core practical, every syllabus objective you need to know from the Edexcel IGCSE 9-1 Syllabus (4BI1) It is an incredible 864 slides long!! It is entirely editable so you can chop and change it to meet your scheme of work! Custom drawn simple diagrams and incredible animations. Every topic has some true false statements and an exam style question with answers at the end to check understanding. Simple colour coding to show what is in Dual (green slides) and what is the extra for separate Biology (orange slides). This is a fully updated version of my best selling resource for the old Edexcel IGCSE syllabus. This file is over 200MB so make sure you have a decent internet connection when you download it! YOU SAVE 50% BY BUYING THE BUNDLE RATHER THAN THE INDIVIDUAL TOPICS

This is the syllabus neatly displayed with tick boxes to assess your understanding (red, amber, green) and a box to tick when you have revised that objective. Very useful when it comes to revision time to to track progress throughout the course

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the topic - Section 2a Levels of organisation 2.1 describe the levels of organisation in organisms: organelles, cells, tissues, organs and systems The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the first topic - Section 2b Cell Structure Section 2b Cell Structure 2.2 describe cell structures, including the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplasts, ribosomes and vacuole 2.3 describe the functions of the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplasts, ribosomes and vacuole 2.4 know the similarities and differences in the structure of plant and animal cells 2.5B explain the importance of cell differentiation in the development of specialised cells 2.6B understand the advantages and disadvantages of using stem cells in medicine The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the first topic - Section 1b Variety of Living Things 1.2 Describe the common features shown by eukaryotic organisms: plants, animals, fungi and protoctists. 1.3 Describe the common features shown by prokaryotic organisms such as bacteria. 1.4 Understand the term pathogen and know that pathogens may include fungi, bacteria, protoctists or viruses. The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

PowerPoint for topic 7.2 Factors affecting gene expression of A Level Biology Edexcel B i Know that transcription factors are proteins that bind to DNA. ii Understand the role of transcription factors in regulating gene expression. iii Understand how post–transcription modification of mRNA in eukaryotic cells (RNA splicing) can result in different products from a single gene. iv Understand that gene expression can be changed by epigenetic modification, including non-coding RNA, histone modification and DNA methylation. v Know that epigenetic modification is important in ensuring cell differentiation.

Topic 9 GCSE Biology: Ecosystems and material cycles presentation is a fully editable PowerPoint which is over 100 slides long!

This is a full animated and editable teaching PowerPoint for Edexcel Biology B A Level Section 5. It covers respiration and photosynthesis. However, it will be relevant to all A level Biology courses. It covers the following: ATP Aerobic Respiration Summary Glycolysis Link Reaction Krebs Cycle Oxidative Phosphorylation Electron Transport Chain Chemiosmosis Anaerobic Respiration Photosynthetic pigments Light-dependent reactions Cyclic and non-cyclic photophosphorylation Calvin Cycle The PowerPoint is 90 slides long!

A handy document with the syllabus neatly arranged but with tick boxes for self assessment (red, amber, green) and a box to tick when the objective has been revised. This is only for students sitting Double Award IGCSE Science NOT separate science Very helpful for revision or to track progress through the course

This is a quick test to check the main factual knowledge for this topic. This is from a range of tests that cover the whole syllabus. This test is just for the double award biology. There is another set of tests for separate biology IGCSE The tests are based on the order of the CGP revision guide so it makes them easy to revise for. The answers are included

This is a quick test to check the main factual knowledge for this topic. This is from a range of tests that cover the whole syllabus. This test is just for the double award biology. There is another set of tests for separate biology IGCSE The tests are based on the order of the CGP revision guide so it makes them easy to revise for. The answers are included

This is a quick test to check the main factual knowledge for this topic. This is from a range of tests that cover the whole syllabus. This test is just for the double award biology. There is another set of tests for separate biology IGCSE The tests are based on the order of the CGP revision guide so it makes them easy to revise for. The answers are included

This is a free sample of the first two sections of this topic in Edexcel GCSE Biology 9-1.

This is a quick test to check the main factual knowledge for this topic. This is from a range of tests that cover the whole syllabus. This test is just for the double award biology. There is another set of tests for separate biology IGCSE The tests are based on the order of the CGP revision guide so it makes them easy to revise for. The answers are included

A complete PowerPoint lesson to cover this entire topic in Edexcel GCSE Biology 9-1.