Large number of root hair cells give a large surface area to the root. First, we compare this to diffusion and look at the key differences. Define active transport as the movement of particles. 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. A basic example of active transport is the uptake of glucose in the intestines in human physiology. Diffusion, osmosis, active transport there are two ways in which substances can enter or leave a cell. Cells use active transport to control the uptake of many substances. As i can print them and read them while not on the computer as well.
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. Spend more time delivering inspirational lessons, building confidence in your learners and creating individual success with time saving resources. Cambridge igcse biology teachers resource third edition by. Designed by the teachers at save my exams for the cie igcse biology 0610 0970 syllabus. Covers topics seen in a high school or firstyear college biology course.
Providing study notes, tips, and practice questions for students preparing for their o level or upper secondary examinations. Active transport the definitive guide biology dictionary. Diffusion, osmosis, and active transport practice questions. Hello, this is a summary of igcse biology cambridge for 2014 exam. Dialysis allows small molecules to be removed from the blood. Workbook third edition cie source stay safe and healthy. Igcse biology notes the best o level revision resource. The structure of animal and plant cells descriptions of a variety of specialised cell types. Cambridge igcse biology textbook pdf by dg mackean and hayward. Written by an experienced teacher and examiner, cambridge igcse biology coursebook with cdrom third edition gives comprehensive and accessible coverage of the syllabus content. As students, we have always enjoyed learning biology and want to make it a fascinating subject for others as well. 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. Its a question weve all asked from an early age, and i hope this helps to answer it. 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.
The differences between active transport, diffusion and osmosis. Their concentration are often higher inside the root hair cell than in the soil, so the diffusion gradient. Mitochondria are present to provide energy for active transport. Substances which the cell needed would diffuse out as soon as their concentration inside the cell rose above that outside it. 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.
All interactive books include an extension section which aims to introduce the student to materials covered at 6th form level. You will notice that many terms are defined in the syllabus, so that is a good. Students need to know something about the kinetic theory before they can. Endocytosis cell takes in large particles by engulfing them.
How do cells move molecules against a concentration gradient. Then we explore two examples of active transport that you need to. Active transport is the movement of molecules from a region of lower. Active transport definition and types of active transport byjus. Water moves across cell membranes by a special sort of diffusion, called osmosis. Written by expert teachers for the cie 06100970 igcse biology syllabus. Active transport the text, written by stephen perse foundation teacher alex van dijk, is enhanced by many interactive features. Membranes much more than a sheet covering the cell. We work with publishers providing a range of resources for our syllabuses including textbooks, websites. Assessment objectives c5 in o level biology is to design or plan an. 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. 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. Traditionally, people have classified living things into three major groups plants, animals and humans.
The accompanying itunes u course contains exercises and places to find more inspiration. It continues until the concentration of substances is uniform throughout. The book can also be used with the cambridge o level biology. Cambridge igcse biology teacher pack by collins issuu.
Start studying igcse biology diffusion, osmosis and active transport. Cambridge igcse biology, 3e plus cd sae 9781471837982 by mackean, d. Proteins or pumps are found in the cell membrane transport molecules across the membrane. Molecular transport proteins are used to move small molecules such as calcium, potassium, and sodium ions across the membrane. This is a disease where the genetic code for the production of haemoglobin has mutated. Internal transport the blood contains plasma red blood cells erythrocytes white blood cells lymphocytes and phagocytes platelets sickle cell anaemia. Igcse biology diffusion, osmosis and active transport.
Igcse biology revision syllabus 3 core diffusion, osmosis. Suggestions for practical activities are included, designed to help develop the required experimental skills, with full guidance included on the cdrom. This is done by passing the dialysis solution over the tube containing the blood. The substance move in and out of the cell either by active transport or passive transport. The small molecules move from a region of high concentration to a region of low concentration. Cambridge igcse biology is accepted by universities and employers as proof of. Dive in to learn more about the many branches of biology and why they are exciting and important.
Edexcel igcse revision notes written by tim filtness 5 the envelope is used to gain entry into host cells. Cambridge igcse biology coursebook third edition by cambridge. We covered these two processes in class today and the teacher is to give you a test on them in the next class. Anything that was more concentrated outside would diffuse into the cell whether it was harmful or not. Learning about active transport biology revision ask. 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. Powerpoint whole lesson based on the legacy course exam questions and markscheme. Diffusion, osmosis, active transport diffusion facilitated diffusion. Active transport requires cellular energy to achieve this movement. Suggestions for practical activities are included, designed to help develop the required experimental skills, with full guidance included on the. Free biology revision notes on the topic active transport.
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. Essentially this video is aimed to explain what diffusion, osmosis, and active transport is. 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. Cambridge igcse biology, third edition coursebook with cdrom mary. This website and its content is subject to our terms and conditions. Were no expert on biology so just feel free to leave comments or any suggestions that could help us improve this site. It is most commonly accomplished by having a transport protein which changes shape when it binds with the cells fuel, a molecule called atp. This causes the haemoglobin, when the oxygen concentration is low, to become sickle shaped.
This process is of course the opposite to the direction in which particles would normally. Active transport mechanisms require the use of the cells energy, usually in the form of adenosine triphosphate atp. In this video, we look at the process of active transport. Cambridge igcse biology coursebook third edition by. Learners gain an understanding of the basic principles of biology through a mix of. 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. For plants to take up mineral ions, ions are moved into root hairs. Active transport requires cellular energy to carry out this movement.
Original material as cambridge university press 2014 as cambridge university press 2014 igcse biology. Any textbooks endorsed to support igcse biology 0610 for examination from 2016 are suitable for use with. 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. Past papers, mark schemes and examiners reports for ocr a level biology, unit cells, exchange and transport. Active transport is a process that is required to move molecules against a concentration gradient. 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. Active transport primary and secondary active transport. Activate transport based on the aqa specification this lesson covers. You can find notes and exam questions for additional math, elementary math, physics, biology and chemistry. All the best in the exam and as you take this test. 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. Other components of cambridge igcse biology, third edition. Active transport supplying the cell ocr gateway gcse.
844 633 1345 812 921 951 734 1153 585 1426 840 1095 1276 935 230 1322 1424 1218 444 210 786 62 954 858 408 617 587 371 793 745 941 202 1143 817 1288 1016 1231 593 1348 1155 1344 324 683 98 1281 477 485