4.65: List the conditions required for bacterial growth, and explain the importance of each. Edit. 4.13: Explain how reproductive isolation can lead to change in allele frequencies possibly leading to the formation of a new species. 4.11: Explain the importance of meiosis to natural selection and evolution (mentioning genetic variation.). Use these A Level Biology Edexcel flashcards to revise for your exam. Played 641 times. Over 22,000 learners have used our materials to pass their exams. Genetic Diversity- gene pool; which genes and alleles are present in the community. 4.32: List 3 similarities and 3 differences between plant cells and animal cells. -to increase the number of individuals if the number is very low. by imcdowell. Start quiz. New Feature in light of the COVID-19 epidemic: Show your teacher how much progress you have made and justify a better estimated grade with a Love Biology Certificate of Achievement. 4.71: Explain why the use of plant-based products can alleviate some of the problems of using oil-based fuels and plastics. Suitable for AS and A level, Love Biology contains 29 topics covering the main biology specifications (AQA, CCEA, CIE, OCR, Edexcel and WJEC). 5th - 10th grade . Start studying Edexcel A level Biology. If your able to get all correct, then your a star! Finish Editing. Print; Share; Edit; Delete; Host a game. A-level Biology ; A-level Business Studies; A-level Chemistry; A-level Economics; A-level English; A-level English Literature; A-level French; A-level Geography; A-level German; Subject H-Z. ElaineDaCunha. 65% average accuracy. 4.75: Explain how zoos use stud books to converse genetic diversity. 62 terms. 4.2: Explain the negative impact that some human activities (give 3 examples) have on diversity of species. ... and the site is mobile friendly so that you can learn and revise anywhere, anytime. Which of these is not a function of lymph nodes? 4.46: Draw a table that shows the similarities and differences in structure and function between sclerenchyma fibres and xylem vessels. You still gain credit for answering correctly on the seond attempt. 4.19: Explain the significance of a very low genetic diversity to humanity in terms of our evolution history. Natural Selection: the mechanism by which organisms change over time as they adapt to their changing environments. -suggested eukaryotes (us) had a common ancestor with archaea (ancient bacteria). Which is a disadvantage of sexual reproduction? 4.45: Describe the detailed structure of sclerenchyma fibres and explain how it relates to their function. 1775: William Withering rigorously tested digitalis and brought it into conventional medicine. 4.20: State the two main sources of genetic diversity. Share practice link. 4.14: Quote the equation for the Hardy-Weinberg calculation and use it to calculation and use it to calculate the frequencies of alleles and genotypes in a population. 4.4: Explain what is meant by the term "behavioral adaptations" to the environment, and give an example. Play. ElaineDaCunha. Learn vocabulary, terms, and more with flashcards, games, and other study tools. $4.99. important because were need to conserve genetic diversity. Structures we can see when we observe or dissect an organism, e.g. Hide Show resource information. 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). 4.40: Describe the location of xylem vessels, phloem sieve tubes and sclerenchyma fibres in plant stems. Biology paper 1 revision edexcel DRAFT. You have twenty minutes to complete the quiz. 4.3: Define the following terms and give a named example of each: species, community, population, habitat, niche, environment, inter-specific completion, intra-specific competition. 5th - 10th grade. ... Edexcel Biology Quiz. 4.0 / 5. 4.63: Describe what a "double-blind trial" and its significance for producing valid and reliable bias. Edit. 4.37: Draw a table that shows the differences in structure and function between starch and cellulose. Start studying Topic 4 Biology Edexcel A Level. Core Topic 5 Evolution and Biodiversity… ibbioteacher. 4.8: Define the terms "natural selection" and "evolution.". where person feels better because they were told the drug they were taking/will take would make them feel better. Variety of life has become more extensive because species adapted to all environments in the world- even extreme habitats. pg 128 of Salters-Nuttfield Advanced Biology for Edexcel AS Biology. 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. 4.29: Describe what happened 20 years later to confirm Woese's work and why it had taken so long for this acceptance of his theory to happen. caydencoleman99. Biology final. Biology A Level Revision Quiz. Are you sure the cDNA experiment is on the edexcel syllabus? Learn vocabulary, terms, and more with flashcards, games, and other study tools. 4.61: Explain why getting the dose of medicine correct is important. Gene Pool: the total of all the alleles of all the genes present in a particular population at any give time. Top A Level Biology - Edexcel Flashcards Ranked by Quality. Over 22,000 learners have used our materials to pass their exams. We haven't been taught it and are about to sit the exam :/ love Heather, Jess and Alice xxxxxxxxxx Yes it is. Based on AQA specification. Edit. 4.9: Explain what is meant by "survival of the fittest" and give an example. 3 years ago. YOU MIGHT ALSO LIKE... 4. 1. : some bacteria have very thermo-stable enzymes so they can tolerate conditions in hot springs of up to 80C and deep sea vents of up to 350C. 4.49: State 4 ways in which water is important to plants. 4.48: Describe the patterns that are created when lignin is laid down and the importance of lignin for plants. Completion of the genetic sequencing of methanococcus jannaschii in 1996 which confirmed that Archaea do indeed from a unique domain with closer evolutionary relationship to eukaryotes. 4.31: Label a plant cell with its organelles and structures, and described what the following features are for- cell wall, chloroplasts, amyoplasts, vacuole, tonoplast, plasmodesmata, pits, and middle lamella. Features of the internal workings of organisms which help them to survive or reproduce, e.g. 4.30: Explain what occurs in the "peer review" process (including publication of a scientific), and in scientific conferences. 4.23: Define the term "classification" and "taxonomy". 55 terms. 4.6: Explain what is meant by the term "anatomical adaptations" to the environment, and give an example. Delete Quiz. Save. 4.64: Describe the placebo effect and explain how it can effect the validity of results. 4.51: Describe a safe, reliable method for measuring the effect of mineral deficiencies on plants. -part of the carbon cycle that removes CO2 from the atmosphere and stores it in another form for a long period of time, e.g.

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