01 Cell biology
Topic 1: Cell biology This page lists the understandings and skills expected for Topic 1 and links to the sub-topic pages which contain detailed revision notes, activities and past paper style questions. Great for revision. 1.1 Introduction to cells …
02 Molecular biology
Topic 2: Molecular biology This is an introduction to the molecular biology topic. It lists understandings and skills expected for Topic 2 including water, carbohydrates, lipids, proteins, enzymes, DNA, RNA, protein synthesis, respiration and photosy…
01 Cell biology
Introduction to cells 1.1
Cell theory states that all organisms are made of cells. This is true in most cases but there are some notable exceptions, like skeletal muscle. This topic covers the cell theory, the exceptions to cell theory and how cells differentiate during cell …
01 Cell biology
The origin of cells 1.5
Life has evolved from the first cells to all the cells we find in the huge diversity of today's organisms. This topic covers the origins of cells and the cell theory proposed by Pasteur and Schwaan in an age when spontaneous generation of cells was s…
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01 Cell biology
Cell division 1.6
…s. Flashcards Topics: Cell division Levels: All | SL-only | HL-only | Easy | Medium | Hard | SL Easy | SL Medium | SL Hard | HL Easy | HL Medium | HL Hard Number of questions: 12 text text Essentials These slides summarise the essential understanding…
07 Nucleic acids AHL
Nucleic acids 7.1 HL
The basics of DNA structure and DNA replication were covered in the SL topic so this topic looks at some extra details including, the 3' and 5' ends of the two antiparallel strands and further details about the enzymes responsible for DNA rep…
08 Metabolism AHL
Cell respiration 8.2 HL
…main sections of topic 8.2. Test if you can draw something like these concept maps from memory. Gallery: MM Cell respiration HL 8.2 Mode: carousel Thumb width: 48px Layout: row text Exam style questions Exam style question about cell respiration. Exp…
07 Nucleic acids AHL
Topic 7: Nucleic acids (Higher level) This is an introduction to the HL Nucleic acids topic. It lists understandings and skills expected for Topic 7 including; extra details of DNA structure and replication, transcription and gene expression as well…
Success with diagrams
…d images. Test yourself with the drag and drop quiz or the exam style questions with model answers. Transport in xylem 9.1 HL Exam style questions test your understanding and skills in this topic. They contain model answers for each question. Re…
08 Metabolism AHL
Topic 8: Metabolism, cell respiration, and photosynthesis (Higher level) This is an introduction to the HL Metabolism topic. It lists understandings and skills expected for Topic 7 including; extra details of enzymes, enzyme inhibitors, cell respirat…
Planning extended response answers for success.
…ise the essential understanding and skills in this topic. They contain short explanations in text... Cell respiration 8.2 HL Key concepts Learn and test your biological vocabulary using these 8.2 Cell respiration flashcards. text text Essentials T…
09 Plant biology AHL
Topic 9: Plant biology This is an introduction to the HL Plant biology topic. It lists understandings and skills expected for Topic 9 including structure and function of xylem and phloem, meristems, growth and reproduction. Helpful for revision. Deta…
Good luck
…ill revise for the last time, and sit down in an exam hall to answer the questions in this years IBDP Biology Exams. Whether HL or SL, aiming for grade 7 or grade 4 we hope you have found StudyIB to be a useful place to review and revise your Biology…
Option A - Neurobiology
…ly your knowledge of the cochlea to explain the use of cochlear implants in deaf patients. A4 Innate and learned behaviour - HL Innate behaviour develops independently of the environment (is not learned) it is inherited. Reflexes are involuntary resp…
Option B - Biotechnology
…Skills ( can you ...) Skill: Evaluation of data or media reports on environmental problems caused by biofilms. B4 Medicine - HL The detection of its genetic material or its antigens can identify infection by a pathogen. For example PCR can be used to…
Option C - Ecology
…n an ecosystem if it is disturbed? In an ecosystem, which places store the nutrients? Skills ( can you ...) Construct Gersmehl diagrams to show the inter-relationships between nutrient stores and flows between taiga, desert and tropical rainforest.…
Option D Human physiology
…cycle to a normal ECG trace. Analyse epidemiological data relating to the incidence of coronary heart disease. D5 Hormones - HL Endocrine glands secrete hormones directly into the bloodstream. Steroid hormones bind to receptor proteins in the cytopla…
10 Genetics AHL
Topic 10: Genetics and evolution This is an introduction to the HL genetics and evolution topic. It lists understandings and skills expected for Topic 10 including crossing over, chiasmata, recombinant phenotypes, linked genes, polygenic inheritance,…
Paper 1 style Exam questions
Topic 7 Nucleic acids HL Paper 1 questions
Topic 7: Nucleic acids HL This page contains multiple choice questions in the style of Paper 1 of the Biology exams. They test the breadth of your knowledge of the understandings and skills about the Nucleic acids HL topic. To spend more time reviewi…
11 Animal physiology AHL
Topic 11: Animal physiology This is an introduction to the HL animal physiology topic. It lists understandings and skills expected for Topic 11 including antibody production by lymphocytes, vaccines, monoclonal antibodies, muscle fibres, actin and my…
08 Metabolism AHL
Photosynthesis 8.3 HL
…roduction of carbohydrates at the end. Key concepts Learn and test your biological vocabulary using these 8.3 Photosynthesis HL flashcards text text Essentials These slides summarise the essential understanding and skills in this topic. They contain…
09 Plant biology AHL
Transport in xylem 9.1 HL
This topic relies on a knowledge of the structure of the leaf, its air spaces and stomata. The transport of water through a plant is driven by transpiration in leaves. Water evaporates from the surfaces of cells and this water vapour fills the air sp…
10 Genetics AHL
Inheritance 10.2 HL
Inheritance has been covered in the SL genetics topic already so this HL topic covers dihybrid crosses and the discovery of linkage by Morgan with Drosophila flies. The prediction of phenotype ratios using larger Punnett squares is required as is the…
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02 Molecular biology
Water 2.2
In this section you will learn everything about the water, about its composition, polarity, hydrogen bonds and what makes water so unique in terms of its physical properties. You will also have the chance to look at how solubility of a substance dete…
11 Animal physiology AHL
Movement 11.2 HL
…ng quiz containing questions covering the topic outlined above. Try the questions to check your understanding. 11.2 Movement HL (to edit) 18/08/2020 [SLIDES]: Multiple choice questions about this topic Drag and drop activities Antagonistic muscles of…
11 Animal physiology AHL
Kidney and osmoregulation 11.3 HL
…vision. Read the slides and look up any words or details you find difficult to understand. Gallery: CS Kidney osmoregulation HL Mode: carousel Thumb width: 48px Layout: row These slides summarise the essential understanding and skills in this topic. …
11 Animal physiology AHL
Sexual reproduction 11.4 HL
Sexual reproduction in this HL topic begins with spermatogenesis and oogenesis where gametes are made. This is followed by the process of fertilisation, the acrosome reaction and the cortical reaction. The development and implantation of a blastocyst…
02 Molecular biology
Enzymes 2.5
…ck and key model is over-simplified (in reality the substrate is changed by the enzyme, but a key is not changed by a lock.) HL - there is also the Induced fit model to think about, as the enzyme slightly changes shape when the substrate binds. HL -…
02 Molecular biology
Proteins 2.4
…amino acids causes the 3D shape of the protein. The shape of insulin protein molecules allows them to function as a hormone. HL - spiral structures of each polypeptide are alpha-helices (which is a 2° structure). HL - the way these helices and the tw…
11 Animal physiology AHL
Antibody production & vaccination 11.1 HL
This topic covers the role of antigens in challenging the immune system leading to antibody production. There are many details required including knowledge of B lymphocytes, T lymphocytes, memory cells and plasma cells. Vaccination as a method of pro…
02 Molecular biology
Photosynthesis 2.9
Photosynthesis is introduced in this topic. The main new idea is that the process is not a single step reaction but a sequence of reactions which occur in different parts of the chloroplast. The photosynthetic pigments are attached to membranes and t…
01 Cell biology
Ultrastructure of cells 1.2
Eukaryote cells are larger than prokaryote cells and they have a more compartmentalised structure since endosymbiosis led to the creation of organelles. There are two basic types to draw, eukaryote and prokaryote cells. In this topic it's important …
07 Nucleic acids AHL
Transcription 7.2 HL
…ourself This quiz contains multiple choice questions covering the understandings and skills in this topic. 7.2 Transcription HL 29/12/2019 [SLIDES]: Multiple choice questions about the HL topic Transcription 7.2 text Drag and drop activities Test you…
07 Nucleic acids AHL
Translation 7.3 HL
…questions This quiz contains multiple choice questions covering the understandings and skills in this topic. 7.3 Translation HL (to edit) 29/12/2019 [SLIDES]: Multiple choice questions about topic 7.3 Translation Drag and drop activities Test your ab…
08 Metabolism AHL
Metabolism 8.1 HL
This topic covers the way enzyme pathways form a cell's metabolism as well as specific examples of these pathways. The action of enzymes and their substrates is required as well as the way in which competitive and non-competitive inhibitors chang…
09 Plant biology AHL
Transport in phloem 9.2 HL
…at revision. Read the slides and look up any words or details you find difficult to understand. Gallery: CS Phloem transport HL 9.2 Mode: carousel Thumb width: 48px Layout: row These slides summarise the essential understanding and skills in this top…
09 Plant biology AHL
Growth in plants 9.3 HL
…at revision. Read the slides and look up any words or details you find difficult to understand. Gallery: CS Growth in plants HL Mode: carousel Thumb width: 48px Layout: row These slides summarise the essential understanding and skills in this topic. …
09 Plant biology AHL
Reproduction in plants 9.4 HL
In this topic the need for flowers and pollination is explored quite simply. The parts of a flower, the processes of pollination and fertilisation as well as seed dispersal and germination are included. The mutualistic relationships between pollinato…
10 Genetics AHL
Meiosis 10.1 HL
…ies the main sections of topic 10.1. Test if you can draw something like these concept maps from memory. Gallery: MM Meiosis HL 10.1 Mode: carousel Thumb width: 48px Layout: row text Exam style questions Exam style question about meiosis Explaining t…
10 Genetics AHL
Gene pools and speciation 10.3 HL
…eat revision. Read the slides and look up any words or details you find difficult to understand. Gallery: CS Gene pools 10.3 HL Mode: carousel Thumb width: 48px Layout: row These slides summarise the essential understanding and skills in this topic. …
Success with multiple choice questions
…by an unusual example. Practise multiple choice skills in this topic. They all contain short explanations. Translation 7.3 HL Test your biological understanding of the complex process of Translation. The multiple choice questions on this page each…
Paper 1 style Exam questions
Topic 8 Metabolism HL Paper 1 questions
Topic 8: Metabolism HL This page contains multiple choice questions in the style of Paper 1 of the Biology exams. They test the breadth of your knowledge of the understandings and skills about HL Metabolism. To spend more time reviewing the topic bef…
Paper 1 style Exam questions
Topic 9 Plant biology HL Paper 1 questions
Topic 9: Plant biology HL This page contains multiple choice questions in the style of Paper 1 of the Biology exams. They test the breadth of your knowledge of the understandings and skills about HL Plant biology. To spend more time reviewing the top…
Paper 1 style Exam questions
Topic 10 Genetics HL Paper 1 questions
Topic 10: Genetics HL This page contains multiple choice questions in the style of Paper 1 of the Biology exams. They test the breadth of your knowledge of the understandings and skills about HL Genetics. To spend more time reviewing the topic before…
Paper 1 style Exam questions
Topic 11 Animal physiology HL Paper 1 questions
Topic 11: Animal physiology HL This page contains multiple choice questions in the style of Paper 1 of the Biology exams. They test the breadth of your knowledge of the understandings and skills about HL animal physiology. To spend more time reviewin…
Revision quizzes for DP Biology 2025
A3.2 Classification & cladistics - revision quiz
…sequences, DNA barcodes, SNPs or protein structures to build cladograms. A3.229/03/2024: A3.2 Classification and cladistics (HL)…
Revision quizzes for DP Biology 2025
A2.3 Viruses (HL) - revision quiz
This simple revision quiz contains questions to help you revise the topic A2.3 Viruses (HL). This topic is all about the variety of structures which viruses have, the way that they use a host cell to replicate, and the differences between the lytic a…
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