Covers topics seen in a high school or firstyear college biology course. If a substance must move into the cell against its concentration gradientthat is, if the concentration of the substance inside the cell is greater than its concentration in the extracellular fluid and vice versathe cell must use energy to move the substance. The book can also be used with the cambridge o level biology. Proteins or pumps are found in the cell membrane transport molecules across the membrane. Sometimes organisms require certain substances and therefore need to move dissolved substances from a region of low concentration to a region where they are at a higher concentration. If diffusion were the only method by which a cell could take in substances, it would have no control over what went in or out. You can find notes and exam questions for additional math, elementary math, physics, biology and chemistry. Suggestions for practical activities are included, designed to help develop the required experimental skills, with full guidance included on the cdrom. A basic example of active transport is the uptake of glucose in the intestines in human physiology. Their concentration are often higher inside the root hair cell than in the soil, so the diffusion gradient. Start studying igcse biology diffusion, osmosis and active transport. Powerpoint whole lesson based on the legacy course exam questions and markscheme. Active transport primary and secondary active transport. In cellular biology, active transport is the movement of molecules across a membrane from a region of lower concentration to a region of higher concentrationagainst the concentration gradient.
Dialysis allows small molecules to be removed from the blood. Igcse biology 0610 past papers about igcse biology syllabus with an emphasis on human biology, the cambridge igcse biology syllabus helps learners to understand the technological world in which they live, and take an informed interest in science and scientific developments. Students need to know something about the kinetic theory before they can. Cambridge igcse biology is accepted by universities and employers as proof of.
Substances which the cell needed would diffuse out as soon as their concentration inside the cell rose above that outside it. This process is of course the opposite to the direction in which particles would normally. Written by expert teachers for the cie 06100970 igcse biology syllabus. All interactive books include an extension section which aims to introduce the student to materials covered at 6th form level. One type of active transport channel will bind to something it is supposed to transport for example, a sodium ion and hold onto it until a molecule of atp. Igcse biology revision syllabus 3 core diffusion, osmosis. Dave hayward the bestselling title, developed by international experts now updated to offer comprehensive coverage of the core and extended topics in the latest syllabus.
Cambridge igcse biology textbook pdf by dg mackean and hayward. Active transport the definitive guide biology dictionary. Internal transport the blood contains plasma red blood cells erythrocytes white blood cells lymphocytes and phagocytes platelets sickle cell anaemia. Traditionally, people have classified living things into three major groups plants, animals and humans. Active transport requires cellular energy to carry out this movement. Edexcel igcse revision notes written by tim filtness 5 the envelope is used to gain entry into host cells. Other components of cambridge igcse biology, third edition. Learning about active transport biology revision all metabolic processes like photosynthesis, respiration etc in the living organisms involve movement of substance in and out of the cells. Designed by the teachers at save my exams for the cie igcse biology 0610 0970 syllabus. Spend more time delivering inspirational lessons, building confidence in your learners and creating individual success with time saving resources. Biology for igcse biology igcse igcse biology 91 igcse biology biology for igcse pdf igcse biology answer cambridge igcse biology igcse biology textbook biology guide pdf igcse igcse pearson biology collins igcse biology igcse biology book biology igcse textbook igcse biology workbook workbook igcse biology igcse biology notes igcse biology. For plants to take up mineral ions, ions are moved into root hairs. Molecular transport proteins are used to move small molecules such as calcium, potassium, and sodium ions across the membrane. The substance move in and out of the cell either by active transport or passive transport.
Active transport mechanisms require the use of the cells energy, usually in the form of adenosine triphosphate atp. Igcse biology notes the best o level revision resource. Were no expert on biology so just feel free to leave comments or any suggestions that could help us improve this site. This is done by passing the dialysis solution over the tube containing the blood. Please practice handwashing and social distancing, and. If a substance must move into the cell against its concentration gradient, that is, if the concentration of the substance inside the cell must be greater than its concentration in the extracellular fluid, the cell must use energy to move the substance. Then we explore two examples of active transport that you need to. Cambridge igcse biology, 3e plus cd sae 9781471837982 by mackean, d. Any textbooks endorsed to support igcse biology 0610 for examination from 2016 are suitable for use with.
Essentially this video is aimed to explain what diffusion, osmosis, and active transport is. First, we compare this to diffusion and look at the key differences. Dive in to learn more about the many branches of biology and why they are exciting and important. Active transport is the movement of molecules from a region of lower. Activate transport based on the aqa specification this lesson covers. These have been made according to the specification and cover all the relevant topics in the syllabus for examination in mayjune as well as octobernovember and march. As students, we have always enjoyed learning biology and want to make it a fascinating subject for others as well. It continues until the concentration of substances is uniform throughout. If you can understand the relevance of the fluidity of the membrane, the various roles the plasma membrane plays and the structures which allow it to do so, youre well on the way to making the connections needed across the curriculum. Fuel learners curiosity by customising lessons with frontofclass resources and develop their learning skills through online homework with a range of hints and learning aids. We covered these two processes in class today and the teacher is to give you a test on them in the next class.
Cambridge igcse biology coursebook third edition by cambridge. Providing study notes, tips, and practice questions for students preparing for their o level or upper secondary examinations. Active transport definition and types of active transport byjus. Igcse biology diffusion, osmosis and active transport. Assessment objectives c5 in o level biology is to design or plan an. In this video, we look at the process of active transport. The capsid is a protein coat and is used to protect the genetic information and give the virus structure the dna or rna a different type of nucleic acid contain the code for building new viruses. Define active transport as the movement of particles. From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the study of the fascinating and intricate systems that make life possible.
All the best in the exam and as you take this test. Mitochondria are present to provide energy for active transport. Active transport is a process that is required to move molecules against a concentration gradient. Membranes much more than a sheet covering the cell. Active transport the text, written by stephen perse foundation teacher alex van dijk, is enhanced by many interactive features. Large number of root hair cells give a large surface area to the root. This causes the haemoglobin, when the oxygen concentration is low, to become sickle shaped. The differences between active transport, diffusion and osmosis. Diffusion, osmosis, and active transport practice questions. Its a question weve all asked from an early age, and i hope this helps to answer it.
They are primary active transport that uses atp, and secondary active transport that uses an electrochemical gradient. We work with publishers providing a range of resources for our syllabuses including textbooks, websites. Learners gain an understanding of the basic principles of biology through a mix of. Cells use active transport to control the uptake of many substances. Workbook third edition cie source stay safe and healthy. Original material as cambridge university press 2014 as cambridge university press 2014 igcse biology. Learn vocabulary, terms, and more with flashcards, games, and other study tools. How do cells move molecules against a concentration gradient. Cambridge igcse biology teachers resource third edition by. The structure of animal and plant cells descriptions of a variety of specialised cell types.
Suggestions for practical activities are included, designed to help develop the required experimental skills, with full guidance included on the. Active transport requires cellular energy to achieve this movement. The small molecules move from a region of high concentration to a region of low concentration. The accompanying itunes u course contains exercises and places to find more inspiration. Cambridge igcse biology teacher pack by collins issuu. It is most commonly accomplished by having a transport protein which changes shape when it binds with the cells fuel, a molecule called atp.
Tailored to follow the cie igcse biology specification, this ibooks textbook, produced by the stephen perse foundation, covers the cells and transport in cells sections of the new syllabus. You will notice that many terms are defined in the syllabus, so that is a good. This is a disease where the genetic code for the production of haemoglobin has mutated. Diffusion, osmosis, active transport there are two ways in which substances can enter or leave a cell. Cambridge igcse biology, third edition coursebook with cdrom mary. Written by an experienced teacher and examiner, cambridge igcse biology coursebook with cdrom third edition gives comprehensive and accessible coverage of the syllabus content.
Learning about active transport biology revision ask. Free biology revision notes on the topic active transport. Water moves across cell membranes by a special sort of diffusion, called osmosis. Endocytosis cell takes in large particles by engulfing them. Cambridge igcse biology coursebook third edition by. Active transport supplying the cell ocr gateway gcse. Diffusion, osmosis, active transport diffusion facilitated diffusion. Anything that was more concentrated outside would diffuse into the cell whether it was harmful or not. Twenty per cent of the marks for cambridge igcse biology are for practical work. Plants transport their nutrients through either osmosis or diffusion. Past papers, mark schemes and examiners reports for ocr a level biology, unit cells, exchange and transport. As i can print them and read them while not on the computer as well. Active transport movement across cell membranes gcse.