Diffusion transport in cells aqa gcse combined science. First we look at what is meant by active transport. Active transport is when molecules move across a cell membrane from a lower concentration to a higher concentration. Builtin assessment and differentiation supports students of all abilities and makes progress tracking easy. Biology igcse diffusion, osmosis and active transport. Activate your students interest in science and keep learners engaged. This website and its content is subject to our terms and conditions. Active transport unlike diffusion and osmosis, active transport uses energy to transport particles across.
This brand new publisher partner student book has been written to match the 2016 ocr gateway gcse 91 biology specification. Diffusion, osmosis, active transport gcse flashcards quizlet. An e book from harpercollins publishers 7785 fulham palace road hammersmith, london w6 8jb. Active transport in humans during digestion, villi in the small intestine absorb soluble nutrients. Movement across cell membranes test questions gcse. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq. We are working with wjec for endorsement of the following student books. First, we compare this to diffusion and look at the key differences. This takes energy, often from adenosine triphosphate atp. Edexcel international gcse 91 science double award student book brian arnold, phil bradfield, jim clark, penny johnson, steve owen, steve potter. Use your knowledge of active transport to explain the following. Active transport is used to continue the transport of the small amounts of remaining nutrients against the concentration gradient.
Active transport supplying the cell ocr gateway gcse. This is known as co transport, and is used in the small intestine to get the nutrients from food into your bloodstream. Substances can move into and out of cells through the cell membrane. 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. Looking for the practice and summary question answers for the combined science. Active transport is an energydependent, saturable process by which xenobiotics are transported across biologic membranes against electrochemical or concentration gradients.
A active transport b diffusion c osmosis d transpiration 1 ii what structure transports water through the. Active transport mechanisms require the use of the cells energy, usually in the form of adenosine triphosphate atp. Aqa gcse sciences student book answers separate sciences. B6 preventing and treating disease pdf b7 noncommunicable diseases pdf b8 photosynthesis pdf b9 respiration pdf b10 the human nervous system pdf b11 hormonal coordination pdf b12 homeostasis in action pdf b reproduction pdf b14 variation and evolution pdf b15 genetics and evolution pdf b16 adaptations, interdependence. Then we explore two examples of active transport that you need to.
Active transport teaching resources the science teacher. Download answers to the practice and summary questions in your aqa gcse sciences 91 biology, chemistry and physics student books. The three main types of movement are diffusion, osmosis and active transport. For an organism to function, substances must move into and out of cells. Active transport is the movement of dissolved molecules into or out of a cell through the cell membrane, from a region of lower concentration to a region of higher concentration. Active transport simple english wikipedia, the free. Often, substances have to be moved from a low to a high concentration against a concentration gradient. Diffusion, osmosis and active transport revision gcse 19. Activate offers a flexible approach, with a choice of combined science or single science routes to suit your school. Learn vocabulary, terms, and more with flashcards, games, and other study tools. In this video, we look at the process of active transport. Worksheets and lesson ideas to challenge students aged 11 to 16 to think hard about active transport gcse and key stage 3. Gcse biology revision worksheets biology past papers. Gcse sciencecells wikibooks, open books for an open world.
Active transport is done so cells get what they need, such as ions, glucose and amino acids. Active transport is a process that is required to move molecules against a concentration gradient. Maths revision cards gcse maths books numerical reasoning tests maths. Active transport plays a part in this by using a concentration gradient that has already been set up by direct active transport using atp to directly move molecules. Active transport is the movement of particles from an area of low concentration to an area of high concentration using energy. Diffusion and osmosis can only work if the concentration gradient is right. The concentration of nutrients in the blood soon reaches the same levels as in the intestines. Endorsed for the new 91 ocr gateway biology specification. For plants to take up mineral ions, ions are moved into root hairs.
Visit ukgcsesciencewjecto preorder your class sets or to sign up. This resource helps students develop a firm understanding of active transport by comparing it to osmosis and diffusion. Have you seen our differentiated intervention workbooks yet. Aqa 2016 gcse biology science spec active transport. Maths made easy complete tuition ltd 2017 uk gcse science.
However, the mineral ion concentration is usually higher inside the cell then outside the cell. Lessons, resources and assessments with teacher access to the kerboodle books. Thank you for buying this edexcel international gcse 91 biology student book. What active transport is, and how it differs from other forms of molecular movement some examples of where active transport occurs related videos. Active transport substances are transported passively down concentration gradients. Start studying diffusion, osmosis, active transport gcse. Please practice handwashing and social distancing, and. The first task is a set of questions to ascertain students understanding if help is needed there is the option of a further 6 short tasks. Active transport movement across cell membranes gcse. Author jo locke and series editor philippa gardom hulme.
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