Cell biology ib notes Revision notes on 6. Organisms consisting of only one cell carry out all functions of life in that cell. Membranes 2. 3 Membrane Structure. Several theories exist that aim to explain the possible origin of cells: Protocell-first theory. Learn about Glycoproteins in Cell-Cell Recognition with IB Biology 2025 SL notes written by expert IB teachers. Topics Biomolecules Cells Metabolism Genetics Heredity Equilibrium Body Systems Plant Systems Biodiversity Nutrition Ecology Human Impacts. 4 Cell and Nuclear Division. Nuclei: Location: Unlike other cells where the nucleus is centrally located, skeletal muscle cells possess nuclei that are pushed towards the Revision notes on 8. DNA as genetic material; Cytoplasm A plasma membrane; DNA. 1 Introduction to Cells; 1. Magnification tells you how many times bigger the image produced by the microscope is than IB Biology Notes. Skip to content. Revision notes on 8. GCSE. 1 Introduction to Cells Cell theory: The cell theory was proposed by Mathias Schleiden, Theodore Schwaan, and Rudolf Virchow. 3 Specialisation; 2. Skeletal Muscle Cells. IB. If an animal cell is placed into a hypertonic solution (more concentrated than the cytoplasm of the cell), it will lose water by osmosis and become Revision notes for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. IB DP, MYP, AP. The Cell Theory All living things are composed of cells (or cell products) The cell is the smallest unit of life Cells only arise from pre-existing cells. 1) Cell Specialisation (1. Central to this is the surface area to volume ratio, which has fundamental implications on cell size, its limitations, and the functions that cells can undertake. 0 O Level Biology Notes; IB Biology Notes; AQA GCSE Biology; IGCSE Biology Notes; Video; Ask AI; Login Botany › Biomolecules and Cell Biology . IB Biology notes on 4. Describe features of red blood cells that make them an atypical cell. 3. Concise and comprehensive IB Biology revision notes. The bacteria emit light by bioluminescence, lighting up the underside of the squid and making it less visible against the IB Biology notes on 2. In 1852 Robert Remak made the conclusion that cells divided to form new cells, that is cells came from pre-existing cells; His conclusion was reached after studying cells from chicken embryos; This discovery is often attributed to Robert Virchow who in 1855 proposed the phrase omnis cellula e cellula (all cells come from cells); Prior to these announcements, it was Revision notes on 1. More. com/Product/IB-Biology-Cell-Biology-11-Video-Lecture-Student- 1. Oxbridge / UK Admissions. The benefit to the squid is increased camouflage. This single cell will initially form embryonic stem cells which will specialise to form the organs and tissues of the organism; A cell that divides is known as a parent (or 'mother') cell IBWorldme is one of the best resource sites for the IB Biology curriculum. Biomolecules. 3 Prokaryotic Cell Structure for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. 2 Ultrastructure of Cells. Prokaryotes are formed by binary fission. Cell Biology. 6 Mitochondria for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. 5 Lipids; 1. 1 Plant structure and growth. 9— Atypical cell structure in eukaryotes. 6 Proteins; 2. Four haploid nuclei are produced: Cells divide twice. 3 Surface Area to Revision notes on 1. 3 Surface Area to Volume Ratio for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. Robert Hooke, Schwann & Schleiden and Pasteur) discovered trends when making observations of organisms The organisms they examined, using microscopes, all appeared to be made of smaller compartments (which we Author: Marlene Expertise: Biology Marlene graduated from Stellenbosch University, South Africa, in 2002 with a degree in Biodiversity and Ecology. Robert Hooke, Schwann & Schleiden and Pasteur) discovered trends when making observations of organisms The organisms they examined, using microscopes, all appeared to be made of smaller OR you can use the buttons at the top of this page to pick a specific IB Biology (HL) and Cell biology, Molecular biology, Genetics, Ecology, Evolution and biodiversity, Human physiology, Nucleic acids, Metabolism, cell respiration and photosynthesis, Plant biology, Genetics and evolution, Animal physiology, Neurobiology and behaviour, Biotechnology and bioinformatics, IB Biology SL [notes] Table of Contents Chapter 1: Cells 2 Chapter 2: Molecular Biology 9 Chapter 3: Genetics 15 Chapter 4: Ecology 19 Chapter 5: Evolution and Biodiversity 24 Chapter 6: Human Physiology 30 Option C: Ecology and Conservation 38 Nature of Science 46 Health Study Online IBDP Biology: IB Style Questions -IB Biology Study Guide and Notes for SL/HL (2023-2024) prepared by SME. 2 Types of Cells; 2. Chapter 2 -->Molecular bio. 6. 1. 1 with the functions of each named structure. What are the roles of stem cells in multicellular organisms? Cell size is a critical component of biology, impacting numerous facets of an organism's function and survival. 2 Villi & Absorption for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. IB Biology notes on 6. it contains two sets of chromosomes; Before meiosis I, these chromosomes replicate; During meiosis I, the homologous pairs of chromosomes are split up, to produce two haploid (n) nuclei . IB Biology: SL DP Revision Notes 1. Revision notes on Active Transport & Bulk Transport (HL) for the HL IB Biology syllabus, written by the Biology experts at Save My Exams. IB Biology Menu Toggle. 1 State that oxidation involves the loss of electrons from an element, whereas reduction involves a gain of electrons; and that oxidation frequently involves gaining oxygen or losing A2. Describe features of red blood cells that make them a discrepancy from a atypical cell. Type II pneumocytes are rounded cells which possess many secretory vesicles (lamellar bodies) which secrete a solution that coats the epithelium of the alveoli; They occupy a much smaller proportion of the alveolar epithelium than the type I pneumocytes, around 5% Learn about Developments in Microscopy with IB Biology 2025 SL notes written by expert IB teachers. 2 Explain how the hydrophobic and hydrophilic properties of phospholipids help to maintain the structure of cell membranes. Submit Search. Contents. 4 Eukaryotic Cell Structure for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. This document provides links to definitions and explanations of key biology concepts across several topics. 7 sections. . 4) Origin of Cells (1. US Admissions. Cell Biology 1. 4 Membrane transport Study Notes prepared by Subject Matter Experts. IB Biology Notes • 47 likes • 53,774 views. each nucleus contains two sets of chromosomes) and the cytoplasm divides equally to form a two-cell embryo; Mitosis continues to form a four-cell embryo and this process continues until eventually, the embryo takes the shape of a hollow IB Biology, part of the International Baccalaureate (IB) Diploma Program, is a rigorous two-year course designed for high school students who want a deeper understanding of biology at a pre-college level. The cell structure of organisms determines whether they are prokaryotic or eukaryotic Prokaryotes have the simplest cell structure, being the first organisms to evolve on Earth and have been classified into two domains: . 2) Carbohydrates (2. 2 Prokaryotic cells. osmosis and active transport are responsible for the transport of individual Learn about Organelles in Cells with IB Biology 2025 SL notes written by expert IB teachers. 2 Endosymbiotic Theory for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. First . IBDP Biology Study Notes - All Topics. Cate has over 20 years’ experience teaching Biology to IGCSE, IB and A-level students in seven different countries across Asia, Europe, North America and the Middle East. The nucleus of the original 'parent' cell is diploid (2n) i. A scale bar may be used; A sharp HB pencil should be used (and a good eraser!); Drawings should be on plain white paper; Lines should be clear, single lines (no sketching); No shading Topic Notes. Importance of Glycoproteins in Cell Biology. In complex cells organelles can become specialised for specific functions; These specialised organelles have specific adaptations to help them carry out their functions; For example, the structure of a organelle is adapted to help it carry out its function (this is why each organelle looks very different from each other); The separation of organelles Apart from the cell structure and function, cell biology also deals with cell communication and signaling. Study Notes focus on IB Biology syllabus with guiding questions of. Glycoproteins have various roles, depending on where they are found The cells are surrounded by a cell wall to hold the shape of and protect the cell and a plasma membrane to allow substances in and out of the cell. D – present first, triggers cells to move from G 1 to S phase E – highest concentration at the start Organelle Adaptations. co. They lack membrane-bound organelles and their DNA is not Revision notes on 1. Active Topic 1 Cell Biology. In 1852 Robert Remak made the conclusion that cells divided to form new cells, that is cells came from pre-existing cells; His conclusion was reached after studying cells from chicken embryos; This discovery is often Cell Theory (1. IB Biology Notes - 21 Cell theory - Free download as PDF File (. They also have mitochondria which are membrane-bound organelles that carry out aerobic cellular respiration to create ATP. 8 Skills: Drawing Cells for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. 1. Auxins are a group of plant hormones that influence many aspects of plant growth . Please login to save the Revision notes for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. Explain two examples of simple diffusion of molecules into and out of cells. txt) or read online for free. Cell respiration releases energy in the form of ATP so that this energy can be used inside the cell. IB DP Biology Cellular Structure Study Notes. 1 Phospholipid Bilayer Properties for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. Organelle Adaptations. Topic 1: Cell biology. Definition: These are elongated cells, often referred to as muscle fibres, that facilitate our voluntary movements. 4 Skills: Cell Division for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. 4 Cell Specialisation. What plausible hypothesis could account for the origin of life? Final Plasmolysis: Culminating the process, this stage sees the cytoplasm fully disengaging from the cell wall. The Significance of Cells; The Origin of Cell Revision notes on 1. It also prevents the cell from The cell cycle is a sequence of stages including interphase (G 1, S & G), mitosis and cytokinesis; The cycle is controlled by cyclins (a group of proteins) and kinases (enzymes); There are four different cyclins (D, E, A & B) whose concentrations rise and fall over the cycle:. 6 Comparison of Prokaryotic & Eukaryotic Revision notes on 8. All Tutors. Describe simple diffusion. 4 Cell structure. Describe features of aseptate fungal hyphae that make them an atypical cell. Topic 1. Striated muscle fibres. IB Biology notes on 8. e. Adenine + Ribose = Adenosine Adenosine + 3 Phosphates = A denosine T ri p hosphate = ATP ATP is a nucleotide (the AMP part can be used in making RNA strands during transcription making DNA strands during DNA replication) Universal energy currency – Used as the source of energy for all chemical reactions, active IB DP Biology Cell specialization Study Notes Study Notes at IITian Academy focus on specific topic and type of questions asked in actual exam. They make up the bulk of skeletal muscles that attach to bones. 6 Cell Division I’m new at IB HL biology and I need a good explanation and a good activity (for a beginner – me) for 2. 5) Cell Division (1. 2 Organic Compounds; 1. the bobtail squid . Show all subjects. 3 History of Fluid Mosaic Model for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. 2) Membrane Structure (1. 5 Outline the role of condensation and hydrolysis in the relationships between monosaccharides, disaccharides and polysaccharides; between fatty acids, glycerol and triglycerides; and between amino acids and polypeptides. 5. 3 History of Fluid Mosaic Model. In essence, plasmolysis is a sequential event that underscores the dynamic nature of plant cells in response to osmotic challenges, emphasizing the intricate balance between cellular Virus structure. Prokaryotic cells are much smaller and simpler than eukaryotic cells. The origin of cells . The equation for calculating a change in gas volume. Cell respiration is the controlled release of energy from organic compounds to produce ATP; Respiration is a series of chemical reactions that happens in every cell; Its Pre-existing cells. Prokaryotic cells 2. 2 Ultrastructure of Cells 1. This has given her a fine appreciation of different cultures, places and teaching methods. The cell is the basic structural, and functional unit of all living organisms. What are the features common to all cells and the features that differ? NOS: Looking for trends and discrepancies; although most organisms conform to cell theory, there are exceptions. 1 Cell Theory; 2. Review notes for higher and standard level IB Biology syllabus. 6) Topic 2 Summaries. 227448711 IB Biology Revision Notes FULL - Free download as PDF File (. 3 Membrane Structure ; 1. This is a collection of IB Biology notes. Here you can find both the notes and lab reports for the whole IB biology programme. I have seen this activity online where cheek cells were used, and leaves. Bone marrow: . IB Revision notes on 1. They have no membrane-bound The cell theory is a unifying concept in biology (meaning it is universally accepted) The cell theory includes three main ideas: All living organisms are made up of one or more Free complete IB Biology 2024 (SL/HL) notes written by expert IB teachers. Cells. edu. 2 Revision notes on 1. Viruses are non-cellular infectious particles; they are not organisms as they are not considered to be alive; Viruses possess none of the characteristic features used for classifying organisms so they sit outside Animal cells lose and gain water as a result of osmosis; As animal cells do not have a supporting cellulose cell wall, the results on the cell are more severe than on plant cells; If an animal cell is placed into a hypertonic solution Sucrose is used as an energy source for the plant whereas cellulose fibers is what makes the plant cell wall strong. Atypical examples. 4 Cell Specialisation for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. A1 Questioning the cell theory using atypical examples, including striated muscle, giant algae and aseptate fungal hyphae. The drawing must have a title; The magnification under which the observations shown by the drawing are made must be recorded where possible . IBDP Biology. Describe features of phloem sieve tube elements that make them an All living organisms are comprised of cells; These cells all have some common unifying features, including . 3 Surface Area Type II Pneumocytes. Topic :Cells – Weightage : 21 % . 1 - Annotated drawing of a cell membrane. * *cell theory refutes sp o n t a n e o u s g e n e r a t i o n All cells exhibit the features of living organisms: T h e c e l l t h e o r y d e b a t e M Movement Travel from one place to another R Respire Release energy from food IB myp 4-5 Biology – Notes- All Topics. 4 Eukaryotic Cell Structure for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. 5 The Origin of Cells 1. Describe features of striated muscle fibers that make them a discrepancy from a atypical cell. coli) as an example of a prokaryote. Molecular Biology (2. The cytoplasm of prokaryotic cells is not divided into compartments, it lacks membrane-bound organelles (except for ribosomes). The concepts covered range from statistical analysis and IB Biology Revision Notes. 6 Stem Cells. miami. Cell biology also involves the studying of the cell cycle and cell division, which provides insight into the cellular composition of an organism. 2 Cells: Origin & Ultrastructure 1. 2 The transport system. In 1962, John Gurdon transferred the nucleus from an adult somatic cell into the enucleated egg cell that then develops into a full organism. 4) Enzymes IB Biology 2016 notes on 1. 1 Draw and label a diagram of the heart showing the four chambers, associated blood vessels, valves and the route of blood through the heart. Topic Notes. IB DP Biology Cellular Structure Study Notes at IITian Academy focus on specific topic and type of questions asked in actual exam. 2 Annotate the diagram from 2. Learn about Cells as Basic Structural Units with IB Biology 2025 SL notes written by expert IB teachers. 2 Endosymbiotic Theory for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. Oxygen is used in this process and carbon dioxide is produced. 2 Meiosis. History of Revision notes on Cell Compartmentalisation for the SL IB Biology syllabus, written by the Biology experts at Save My Exams. 4 Revision notes on 1. 2 Functions of Life. No subjects IB Biology: SL DP Revision Notes 1. Drawing conventions. All Questions for Topic : Tissues,Organs,System,Structure and Function,Life processes,Factors affecting human health,Vaccination Revision notes on 1. 5 Pre-existing cells. A-Level. 1 Draw and label a diagram of the ultrastructure of Escherichia coli (E. 4 Membrane Transport; 1. Cell respiration 8. Revision notes on Cell Theory for the SL IB Biology syllabus, written by the Biology experts at Save My Exams. 3. Revision notes for the DP IB Biology: Cell Biology. 4 Membrane Transport. 3) Membrane Transport (1. 2. 1 Cellular Respiration for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. IB Biology Revision Notes at IITian Academy focus on a specific topic or type of questions asked in actual exam. Resulting in 4 daughter cells, each with half as many chromosomes as All the course specific revision resources you need to ace your IB Biology exams. 4 Membrane Transport 1. 1 Introduction to cells. After completing a PGCE (Postgraduate certificate in education) in 2003 she taught high school Biology for over 10 years at various schools across South Africa before returning to Stellenbosch University in Effects of Osmosis on Cells Without Cell Walls. Developed in collaboration with an expert examiner, our On-Demand Maths Skills for A Level Biology course covers all the mathematical knowledge students need for their exams. Eukaryotic cells 2. 1 State that meiosis is a reduction division of a diploid nucleus to form haploid nuclei. Stem cells ppt 18. 6) Stages of Mitosis (1. During interphase (the period before nuclear division) of the cell cycle, the DNA replicates to create two identical strands of DNA called chromatids. The cytoplasm then centralizes, positioning itself at the heart of the cell. According to the cell theory, living organisms are composed of cells. Phospholipid molecules make up the cell membrane and are hydrophilic Notes including all options from the IB Notes Wiki; Topic 4 + option G interactive syllabus from racerocks. 5 Oxidative Phosphorylation for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. The transport system 6. IB biology Notes. No subjects found. uk; Study notes with diagrams and Powerpoint presentaions from The Open Door Website; Notes from Biology IB Stuff; Organised notes including all options from Wikibooks cells can only be formed from the division of other cells. The volume of oxygen consumed (mm 3 min-1) during respiration can be worked out using the radius of the lumen of the capillary tube r (mm) and the distance moved by the manometer fluid h (mm) in a minute using the formula:; πr 2 h. Shall be updated regularly as the topics are covered. A common auxin is known as IAA (indole-3-acetic acid); In shoots, auxin is produced in cells at the growing tip before moving away into Learn about Osmosis with IB Biology (SL/HL) notes written by expert IB teachers. U. Animal cells lose and gain water as a result of osmosis. 1 Introduction to Cells. 4 Membranes. Standard level. Cell theory states that all living organisms are made of at least one cell; Revision notes on 1. Meiosis 4. 1 Particles move across membranes by simple diffusion, facilitated diffusion, osmosis and active transport. Currently, the site exists more to give you an idea of how the information can be organised (especially if you Revision notes on 1. This theory proposes that a cell-like compartment capable of some basic metabolic functions arose spontaneously; These are 1. At this point, each chromosome still consists of two chromatids; Note that the chromosome number halves Pre-existing cells. Stem Cells Understandings: The capacity of stem cells to divide and differentiate along different pathways is necessary in embryonic development and also makes stem cells suitable for therapeutic uses. teacherspayteachers. 3 Meiosis. 1 Draw and label a diagram to show the structure of membranes. 3) Proteins (2. 1 Introduction to Cells 1. Menu. Offered at both the Standard Level (SL) and Higher Level (HL), the course aims to develop students’ scientific knowledge, research skills, and critical thinking. Start studying; Search. 7 Microscopes for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. The best free online IB resource trusted by students and schools globally. Last updated: December 4, 2024 English. 3 Membrane Structure 1. Revision notes on 2. The chromatids are joined together by a narrow region called the centromere; The two chromatids that make up the double structure of a chromosome are Revision notes on 1. Home. coli and Helicobacter; Archaebacteria or Cell Biology: 1. Revision notes on 1. Syllabus Edition. Yes! We have free science flashcards for all the AP IB Biology (HL) classes including Cell biology, Molecular biology, Genetics, Ecology, Evolution and biodiversity, Human physiology, Nucleic acids, Metabolism, cell respiration and photosynthesis, Plant biology, Genetics and evolution, Animal physiology, Neurobiology and behaviour, Biotechnology and bioinformatics, Ecology Struggling with maths in A Level Biology? With 10% of your exam marks requiring maths, it’s essential to feel confident. Image courtesy of This is bio. Learn about Atypical Cell Structure with IB Biology 2025 SL notes written by expert IB teachers. Notes are based on new syllabus for first assessment of 2025. Bone marrow provides a Revision notes on 8. The volume of oxygen consumed can then be used to determine the average DNA replication as a prerequisite for mitosis and meiosis. Free complete Biology 2025 Syllabus SL notes written by expert IB teachers. g. 3 Nucleic Acids; 1. 1 Water; 1. Describe features of skeletal muscle fibers that make them an atypical cell. 6 Comparison of Prokaryotic & Eukaryotic Cells for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. 1 Draw and label plan diagrams to show the distribution of tissues in the stem and leaf of a dicotyledonous plant. Following human fertilisation, the newly fertilised ovum divides by mitosis to form two diploid nuclei (i. 1 Cell Theory. Eukaryotic cells form new identical cells by mitosis and sex cells through meiosis. 3 Surface Area to IB DP Biology Topic 1: Cell biology 1. 2 Phases of Mitosis for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. Striated muscle fibres (fused muscle cells) are: Longer than typical cells (up to 300 mm in length in comparison to a cardiac muscle cell which has a length of 100 - 150 µm); Have multiple nuclei surrounded by a single membrane (sarcolemma) ; Striated muscle cells are formed from multiple cells which have fused together Microscopes can be used to analyse cell components and observe organelles; Magnification and resolution are two scientific terms that are very important to understand and distinguish between when answering questions about microscopy (the use of microscopes): . Single-celled organisms have a high SA:V ratio; this means that they can survive by exchanging substances with their environment by simple diffusion at the cell surface. Vibrio fischeri Vibrio fischeri is a species of bacterium found in marine environments, where they form mutualistic associations with some species of squid, e. 1 Diffusion. D – present first, triggers cells to move from G 1 to S phase E – highest concentration at the start of S phase Revision notes on 1. Biomolecules and Cell Biology. Prokaryotic (Before Nucleus): In unicellular organisms. 2. A stem cell is a cell that can divide (by mitosis) an unlimited number of times; Each new cell (produced when a stem cell divides) has the potential to remain a stem cell or to develop into a specialised cell such as a blood cell or a muscle cell (by a process known as differentiation); This ability of stem cells to differentiate into more specialised cell types is known as potency Constraints on cell size. 4 Topics · 26 Revision Notes. Structured Notes – Notes prepared by Experts for your better understanding and reference. IGCSE. The cell cycle is a sequence of stages including interphase (G 1, S & G), mitosis and cytokinesis; The cycle is controlled by cyclins (a group of proteins) and kinases (enzymes); There are four different cyclins (D, E, A & B) whose concentrations rise and fall over the cycle:. Log in; HL DP Revision Notes 1. Botany. 3 Cells: Membrane Structure & Transport 1. IB Biology Notes - Download as a PDF or view online for free. 1 Phospholipid Bilayer Properties for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. Resources. What plausible hypothesis could account for the origin of life? After differentiation, a stem cell is no longer considered a stem cell; However, some stem cells do remain in specific locations in the human body, this is called the stem cell niche; Their presence gives the capacity for these tissues to regenerate and repair; Some of the tissues which retain stem cells within a niche include. 2 Overview of the Stages of Respiration for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. Key Components of IB Biology: Core Topics: All students (SL and HL) study foundational biology topics, which typically include: Cell biology; Molecular biology; Genetics; There are SEVEN characteristics of living organisms: Cells are the smallest units of life, but are capable of surviving in mediums free of life. Class notes; Oxford IB Diploma Programme BIOLOGY Course Companion 2014 Edition; BIOZONE Student Workbook IB Biology Second Edition; 3. 2 Osmosis. 4 Cell Specialisation for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. Worked Out Examples – Help you to understand concept better and practice for your exam. Cytology, the branch of biology which focuses on cell theory, can be used to demonstrate deductive reasoning. Suitable for AQA and OCR. In complex cells organelles can become specialised for specific functions; These specialised organelles have specific adaptations to help them carry out their functions; For example, the structure of a organelle is adapted to help it carry out its function (this is why each organelle looks very different from each other); The separation of organelles IB Biology notes on 2. 1 IB Biology Sl Giorgio Dal Pont Cholesterol: -It makes phospholipids pack more tightly and regulates the fluidity and flexibility -Absent in plant cells as they are already supported by a rigid cell wall made of cellulose -Is a steroid and is amphipathic (has both hydrophilic and hydrophobic regions) -Restricts the movements of phospholipids (fluidity) and avoids crystallisation of the tails Are you a teacher? Find the student handout for the video here: https://www. 5 Active Transport & Bulk Transport for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. Plant structure and growth 9. Cell Theory; Functions of Life; SA : Vol Ratio; Early-stage animal embryos. 0 /0. 1 Origin of Cells for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. What are stem cells? Watch this video: Stem cells in research 17. AP. 1) Water (2. 6) Cell Cycle Regulation (1. In 1852 Robert Remak made the conclusion that cells divided to form new cells, that is cells came from pre-existing cells; His conclusion was reached after studying cells from chicken embryos; This In order for an organism to be multicellular, its cells need to adhere, or stick, to one another to form tissues; The plasma membrane is responsible for cell adhesion and this can be permanent or temporary; Cell IB DP Biology Cellular Structure Study Notes. Chapter 3 - IB Biology Revision Notes . 3 Surface Area Learn about Origin of First Cells with IB Biology (SL/HL) notes written by expert IB teachers. Cells can only be formed by division of pre-existing cells. Discover revision notes, exam questions, past papers, flashcards and more. Bacteria or Eubacteria - 'true' bacteria, includes commonly known bacteria such as E. All living organisms are composed of cells and its products. NOS: Looking for trends and discrepancies; although most organisms conform to cell theory, there are exceptions. It includes sections on cells, DNA and genetics, ecosystems and evolution, and human body systems. pdf), Text File (. 2) Eukaryotic Cells (1. HOME; IB DP Menu Toggle. Figure 2. Created by: Sourav Pan . OR you can use the buttons at the top of this page to pick a specific IB Biology (HL) and Cell biology, Molecular biology, Genetics, Ecology, Evolution and biodiversity, Human physiology, Nucleic acids, Metabolism, cell respiration and photosynthesis, Plant biology, Genetics and evolution, Animal physiology, Neurobiology and behaviour, Biotechnology and bioinformatics, OR you can use the buttons at the top of this page to pick a specific IB Biology (SL) and Cell biology, Molecular biology, Genetics, Ecology, Evolution and biodiversity, Human physiology, Neurobiology and behaviour, Biotechnology and bioinformatics, Ecology and conservation to explore all the flashcard sets we’ve got on that particular topic. Cell wall: Protects the cell from the outside environment and maintains the shape of the cell. 1 Cell respiration. 1 Introduction to Cells. Cell respiration occurs in the mitochondria and cytoplasm of cells. IB DP Biology Study Notes 1. 51 lectures. Topic :Cells-Tissues. 2 Ultrastructure of Cells ; 1. Glycoproteins have various roles, depending on where they are found Final Plasmolysis: Culminating the process, this stage sees the cytoplasm fully disengaging from the cell wall. 4 Membrane Transport for the DP IB Biology: HL syllabus, written by the Biology experts at Save My Exams. Prepare for your exams effectively with our clear and concise summaries. ATP, the cell energy currency . C1. Revision notes on Adenosine Triphosphate (ATP) This energy is released by the process of cell respiration; OR you can use the buttons at the top of this page to pick a specific IB Biology (SL) and Cell biology, Molecular biology, Genetics, Ecology, Evolution and biodiversity, Human physiology, Neurobiology and behaviour, Biotechnology and bioinformatics, Ecology and conservation to explore all the flashcard sets we’ve got on that particular topic. com; Revision notes for options C, D, E and H from revision-notes. 1) Prokaryotic Cells (1. 3) Lipids (2. Home; Topic 1 Cell Biology. 1 Cells: Theory. As animal cells do not have a supporting cellulose cell wall, the results on the cell are more severe than on plant cells. 1 Cells as Basic Structural Units. 2 Endosymbiotic Theory. Login Sign Up. Chapter 1 -->Cell Biology. Meiosis I. Learn about Osmosis with IB Biology Cell Biology. All living cells contain some sort of DNA, this varies between eukaryotic cells and prokaryotic cells; The presence of DNA means that a new cell can be formed from an old cell, as genetic IB Biology notes on 9. 3 Surface Area to Volume Ratio. U. 4. 2 Cell respiration. Yi Fan Chen Follow - Phospholipid bilayers form cell membranes due to the amphipathic properties of phospholipid molecules, with hydrophilic heads and hydrophobic tails. 4 The Nobel prize in Medicine for 2012 was shared by two scientists whose work has led to our understanding of stem cells. Prokaryotic ribosomes are structurally smaller (70 S) in comparison to those found in eukaryotic cells (80 S); Prokaryotes do not have a nucleus, but they do have genetic material. 1 - Annotated drawing of an animal cell. Their metabolic requirements are relatively low; The surface area is large enough to allow for sufficient absorption of nutrients and gases and secretion of waste products According to the cell theory, new cells are produced from pre-existing ones; The cells that make up a multicellular organism are the result of a single cell undergoing many cycles of cell division. In 1852 Robert Remak made the conclusion that cells divided to form new cells, that is cells came from pre-existing cells; His conclusion was reached after studying cells from chicken embryos; This IB Biology Notes Prokaryotic Cells - Free download as PDF File (. For rectifications reach out to the subject lead. 1 Draw and label a diagram of the ultrastructure of a liver cell as an example of an animal cell. It's extensively used in cell biology and pathology to determine the distribution of proteins, glycoproteins, and other Revision notes on Adenosine Triphosphate (ATP) for the SL IB Biology syllabus, written by the Biology experts at Save My Exams. Revision notes on Cell Types & Structures: Skills for the SL IB Biology syllabus, written by the Biology experts at Save My Exams. Free complete IB Biology 2024 Cell Biology. 7. Meiosis: The division of one diploid nucleus to produce four haploid nuclei. Y. This site is being built to cover the new IB curriculum (2023) and as such is still a work in progress (the content is not yet complete). Ribosomes: Found either floating free in the cytoplasm or attached to the surface of the rough endoplasmic reticulum and in Cell respiration as a system for producing ATP. 5 Active Transport & Bulk Transport. Free complete IB Biology 2024 (SL/HL) notes written by expert IB teachers. This is generally in the form of a single Revision notes on 1. In essence, plasmolysis is a sequential event that underscores the dynamic nature of plant cells in response to osmotic challenges, emphasizing the intricate balance between cellular Pre-existing cells. 2 Membrane Proteins for the DP IB Biology: SL syllabus, written by the Biology experts at Save My Exams. Scientists studying cells (e. 4. 4 Carbohydrates; 1. chhic kkestv xdef vrhzmyk xmyjc xwclzz lwdkn nasz vgiqft gqtrya