Find A Level Biology past papers, worksheets and revision materials on Maths Made Easy. Organic material accumulates, changing the conditions. 4.55: Describe a safe, reliable method for measuring the tensile strength of plant fibres. 4.75: Explain how zoos use stud books to converse genetic diversity. -releases CO2 (contributes to global warming). 4.80: Draw a flow chart to summarise the processes involved in the storage of seeds in a seed bank (include how germination can be prevented). : Great Panda. 4.12: Define the term "gene pool" and how this relates to the amount of genetic diversity in a population. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 21 pages of exam questions and mark schemes. 4.32: List 3 similarities and 3 differences between plant cells and animal cells. 4.9: Explain what is meant by "survival of the fittest" and give an example. Prokaryote- no nucleus; circular DNA; cell wall (peptidoglycan). 4.61: Explain why getting the dose of medicine correct is important. 4.16: State the two main components of biodiversity. Cell Organelles (Eukaryotic Cell) Cell differentiation. AQA A Level Biology past paper exam questions organised by topic with mark schemes. 4.26: List the 5 kingdoms, and give the main characteristics of each. Topic: 3.4.2 protein synthesis - transcription and translation. Reproductive isolation may lead to certain alleles decreasing as the species become specialised to a new environment. 4.70: Define sustainability and state 3 reasons why the use of oil based fuels and plastics is not sustainable. Could be used as an activity in class, given as homework, used as an end of topic test, or for revision. 4:29. AQA Past Papers. Only the species that can cope with the extreme conditions will grow and survive. 4.39: Identify xylem vessels, phloem sieve tubes and sclerenchyma fibres from diagrams and as viewed with a light microscope. Use these to practice your exam question answers and highlight revision topics you need to work on. -research is published in some form that other scientists can easily access (journal, internet, conference). 4.41: Explain the cohesion-tension theory of water movement through a plant showing the link with transpiration. SUCCESSION = The process by which an ecosystem changes over time – the biotic conditions change as the abiotic conditions change. 4.73: Define "carbon sink" and explain why fossil fuels are and example of a carbon sink. N= total number of organisms of all species. Edexcel A Level Biology revision resources. 4.45: Describe the detailed structure of sclerenchyma fibres and explain how it relates to their function. This covers all the topics and modules for all specifications including 8BN0, 9BN0, 8BI01, 9BI01, 8BI0, 9BI0. sim: nucleus, cell membrane, mitochondria. 4.74: List the aims of captive breeding programmes. 4.44: Describe the detailed structure of phloem and explain how this relates to their function. Start studying Biology Topic 4 Edexcel 2015 A level. This bundle of 4 revision lessons covers the content in topics 1 - 4 of the Edexcel A-level Biology (Salters Nuffield) specification that are taught during year 12 (AS) of the two-year course. 4.42: Describe the evidence for the cohesion tension theory. 4.1: Explain how the variety of species has generally increased over time. tiluka_bhanderi. The '9-1' Edexcel specification for GCSE Biology, examined from summer 2018. -Deforestation/loss of habitat leads to decrease in species richness. Misc Healthcare Topics Nursing Courses & Subject Areas Nursing Subspecialties Other Healthcare Fields Pharmacology Physiology Radiology & Diagnostic Imaging Veterinary ... Use these A Level Biology Edexcel flashcards to revise for your exam. 4.49: State 4 ways in which water is important to plants. Classification. -CO2 on burning can be taken in by the plants being grown for fuel (carbon neutral). Pass your A-Level Biology exams. : grey squirrels bury acorns to act as larders in times of food shortages. Voice of the Genome Revision Notes: Cancer. Questions organised by topic with mark schemes for the Edexcel A Level Biology course. New Edexcel AS Biology Topic 1 45 Terms. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Hierarchical- breaking down everything into smaller groups (with no overlap)- e.g. 4.30: Explain what occurs in the "peer review" process (including publication of a scientific), and in scientific conferences. Structures we can see when we observe or dissect an organism, e.g. 4.54: List 3 inorganic ions required by plants and state what they are required for. Find A Level AQA Biology past papers split up by topic as well as A Level Biology practical questions and exam revision. 4.65: List the conditions required for bacterial growth, and explain the importance of each. We provide detailed revision materials for A-Level Biology students and teachers. 4.2: Explain the negative impact that some human activities (give 3 examples) have on diversity of species. 4.6: Explain what is meant by the term "anatomical adaptations" to the environment, and give an example. A Level Biology revision material made for the Edexcel exam boards. A pioneer species is the first plant to colonise the bare ground. Edexcel A Level Revison. Whilst these questions are predominantly for the OCR and Edexcel exam boards, due to the fact that all exam boards must now all examine broadly the same content, they are useful when preparing yourself for A Level maths exams across all of the four exam boards; OCR, OCR MEI, Edexcel and AQA. Cell Division MS. Specialised Cells & The Nervous System. -greater genetic diversity is good because it allows the population to adapt. 4.23: Define the term "classification" and "taxonomy". Start studying Topic 4 Biology Edexcel A Level. 4.66: Describe 3 aseptic techniques or precautions taken to avoid contamination of agar growth medium. Make microfibril (many molecules of cellulose bonded by hydrogen). Pectin= glue that holds together cellulose. -drug won't work/have desired effect (TOO LITTLE). A Level Biology AQA Exam Questions By Topic. 4.57: Give 3 useful properties of plant fibres that make them suitable for purpose. Biodiversity and natural resources. Questions organised by topic, past papers & mark schemes. The development […] Revision for Edexcel Biology GCSE, including summary notes, exam questions by topic and videos for each module Over 22,000 learners have used our materials to pass their exams. Specialised … Eukaryotic & Prokaryotic Cell Structure & Function 7. Topic Questions. 4.15: List the assumptions that are made when working with the Hardy Weinberg equation. 4.24: Describe what is meant by a "hierarchical" classification and a "phylogenetic" classification. -take 4 small shots of the same species of plant. 4.35: Explain why alpha glucose links together to form starch whereas beta glucose forms cellulose. For fuel ( carbon neutral ) Salters ' -Nuffield ( a Level Biology past papers, worksheets and materials.: Microbiology and Pathogens topic 7: Modern Genetics selection and evolution ( mentioning genetic variation. ) `` ''... Total of all the genes present in the community be flipped to form a ( 1,4 glycosidic! 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