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Get revising Biology today - A-level, A2 and AS Biology revision section. what happens to plant cells in a solution with low water potential? -squamous epithelial what is an advantage of having genetically identical crops? -distance Check out our website for more revision resources and other subjects and levels. structure: flat memb bound sacs Thanks for looking. -supports trachea and bronchi outline facilitated diffusion using carrier proteins This book is full of clear notes and exam-style practice questions covering every AS Biology topic for the OCR exam board. Learn vocabulary, terms, and more with flashcards, games, and other study tools. -endothelium -will produce a known crop as it will lack genetical diversity. Biology OCR A A-Level Module 5.2 - Kidney and Excretion 77 Terms. 3.5.1.1 - Photosynthesis (Light Dependent Reactions), 3.5.2.1 - Glycolysis, Link Reaction and Krebs Cycle. Put together revision activities that work for you, whether thats flash cards, mind maps, revision apps, or watching videos. -Across a partially permeable membrane. New Grade 9-1 Edexcel International GCSE Biology: Revision Question Cards. which side of the heart pumps deoxygenated blood away form the heart? -glycoproteins/glycolipids: receptor sites. AQA-A level Biology-revision cards Flashcard Maker: Niamh Blackett. -collagen fibres -exocytosis (leaving the cell) when haemoglobin binds to oxygen it becomes? diaphragm (relaxes and contracts to increase/decrease volume of lungs. -houses genetic info Other cards in this set. meristem cells have very thin walls. These A Level maths revision cards are the first of their kind. when a cell takes on a particular role/function. -good supply of molecules to exchange surface: keeps conc high so diff grad is high. Free postage. - photosynthesis requires water to produce carbohydrates. All information and questions sourced from the CGP GCSE Biology Higher Level Revision Guide for the OCR Gateway Exam Board. OCR (A) A Level Biology Summary Notes. Past papers, summary notes, factsheets and past exam questions by topic for AQA, CIE, Edexcel, OCR and WJEC Biology AS and A-Levels -found on thylakoid memb and in intergranal memb. -lower epidermis has pores called stomata, allows gasses to be exchanged between leaf and air. -elastic fibres -usually the H20 will leave through the stomata that open when the guard cells are fully turgid. moved around using a pump. -have a small SA/VOL ratio allows the transport of ions such as sodium and calcium ions. This pack contains 48 cards covering the key Reactions, Definitions, Equations and Reaction Mechanisms that you need to know for your exams (plus a few other important bits). alveoli in lungs. -Once a protein has been synthesized (made), Rough ER creates a bubble around it by pinching off a portion of its own membrane. Join now Introduction Coordination of all the activities taking place within an organism is essential for the maintenance of life. diffusion is the movement of molecules down a concentration gradient. used to break down pathogens ect. -nucleolus in the nucleus -gradient from inside of cell to the outside. largest vol of air that can be removed from the lungs in one complete breath. -carbon dioxide what is the process where the cell splits in cell division called? A Level Biology is one of the most popular A level subjects but is arguably one of the most challenging to revise. This resource is a set of flash cards to help students revise the cell division content in the OCR A Level Biology specification. when the blood passes through the heart 2 times in a single circulation. -plant cells have a cell wall that prevents the cell from bursting. -holding the components of some metabolic pathways in place. -there actives play important role in movement of products produced from photosynthesis up and down the plant in the sieve tubes. passes through the plasmodesmata, (gaps in the cell wall that contain a thin strand of cytoplasm). -chloride ion shift into cell to maintain a neutral cell. facilitated diffusion is a passive process, (requires no energy). 3.1.2.1 Introduction to Biological Molecules. this is the amount of air that is left in the lungs after the max exhalation of person. Pure, Statistics and Mechanics. what does evaporation cause? how does H2O leave the leaf? Free A Level Biology Cell Division Revision Flash Cards. Home Biology Revision OCR (A) A-Level. -hydrophilic head (water loving) -water leaves cell by osmosis to fill this gradient. left side (reason the left ventricle is thicker than the right). the communication between cells using a hormone and a complimentary receptor site that will bring about a change in other cells. Click & Collect. -facilitated diffusion -carbonic acid dissociates to release H+ ions = (HCO3-) how much more air can be breathed out over and above the amount that is breathed in a tidal volume breath.

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