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.

This is a fully editable PowerPoint presentation designed specifically for the new Edexcel A Level Biology B Specification for first teaching in 2015. It covers the whole of Topic 3 which is Classification and Biodiversity. Each specification objective is covered in just the right amount of detail with clear diagrams and clever slide animations. This presentation is almost 100 slides long! Although it is designed for the Edexcel specification much of its content is relevant for other A Level courses.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the topic - Section 4d Human influences on the environment 4.12 understand the biological consequences of pollution of air by sulfur dioxide and carbon monoxide 4.13 understand that water vapour, carbon dioxide, nitrous oxide, methane and CFCs are greenhouse gases 4.14 understand how human activities contribute to greenhouse gases 4.15 understand how an increase in greenhouse gases results in an enhanced greenhouse effect and that this may lead to global warming and its consequences 4.16 understand the biological consequences of pollution of water by sewage 4.17 understand the biological consequences of eutrophication caused by leached minerals from fertiliser 4.18B understand the effects of deforestation, including leaching, soil erosion, disturbance of evapotranspiration and the carbon cycle, and the balance of atmospheric gases 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 is a fully editable PowerPoint presentation designed specifically for the new Edexcel A Level Biology B Specification for first teaching in 2015. It covers the whole of Topic 2 which is Cells, Viruses and Reproduction of Living Things. Each specification objective is covered in just the right amount of detail with clear diagrams and clever slide animations. This presentation is over 170 slides long! Although it is designed for the Edexcel specification much of its content is relevant for other A Level courses.

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

his is a fully editable PowerPoint presentation designed specifically for the new Edexcel A Level Biology B Specification for first teaching in 2015. It covers the whole of Topic 1 which is Biological Molecules. Each specification objective is covered in just the right amount of detail with clear diagrams and clever slide animations. This presentation is over 150 slides long! Although it is designed for the Edexcel specification much of its content is relevant for other A Level courses.

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 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

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 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.

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

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the topic - Section 3b Inheritance - DNA and Genes 3.14 understand that the genome is the entire DNA of an organism and that a gene is a section of a molecule of DNA that codes for a specific protein 3.15 understand that the nucleus of a cell contains chromosomes on which genes are located 3.16B describe a DNA molecule as two strands coiled to form a double helix, the strands being linked by a series of paired bases: adenine (A) with thymine (T), and cytosine © with guanine (G) 3.17B understand that an RNA molecule is single stranded and contains uracil (U) instead of thymine (T) 3.18B describe the stages of protein synthesis including transcription andtranslation, including the role of mRNA, ribosomes, tRNA, codons and anticodons 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 topic - Section 3b Inheritance - Variation and Mutation 3.33 understand that variation within a species can be genetic, environmental, or a combination of both 3.34 understand that mutation is a rare, random change in genetic material that can be inherited 3.35B understand how a change in DNA can affect the phenotype by altering the sequence of amino acids in a protein 3.36B understand how most genetic mutations have no effect on the phenotype, some have a small effect and rarely do they have a significant effect 3.37B understand that the incidence of mutations can be increased by exposure to ionising radiation (for example, gamma rays, x-rays and ultraviolet rays) and some chemical mutagens (for example, chemicals in tobacco) 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.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the topic - Section 5d Cloning 5.17B describe the process of micropropagation (tissue culture) in which explants are grown in vitro 5.18B understand how micropropagation can be used to produce commercial quantities of genetically identical plants with desirable characteristics 5.19B describe the stages in the production of cloned mammals involving the introduction of a diploid nucleus from a mature cell into an enucleated egg cell, illustrated by Dolly the sheep 5.20B understand how cloned transgenic animals can be used to produce human proteins 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 1a Characteristics of Living Organisms 1.1 understand how living organisms share the following characteristics: • they require nutrition • they respire • they excrete their waste • they respond to their surroundings • they move • they control their internal conditions • they reproduce • they grow and develop. 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 is a free sample for my complete PowerPoint for the Topic 8 Exchange and Transport In Animals in Edexcel GCSE Bioogy 9-1