This engaging lesson acts as an introduction to carbohydrates and describes the differences between monosaccharides, disaccharides and polysaccharides. The PowerPoint and accompanying worksheet have been designed to cover the first part of points 1.12 & 1.13 of the Pearson Edexcel A-level Biology A specification and make clear links to the upcoming lessons in this sub-topic on these three main groups of carbohydrates.
The lesson begins with a made-up round of the quiz show POINTLESS, where students have to try to identify four answers to do with carbohydrates. In doing so, they will learn or recall that these molecules are made from carbon, hydrogen and oxygen, that they are a source of energy which can sometimes be rightly or wrongly associated with obesity and that the names of the three main groups is derived from the Greek word sakkharon. A number of quick quiz rounds have been written into the lesson to introduce key terms in a fun and memorable way and the first round allows the students to meet some of common monosaccharides. Moving forwards, students will learn that a disaccharide is formed when two of these monomers are joined together and they are then challenged on their knowledge of condensation reactions which were originally encountered during the lesson on water. Students will understand how multiple reactions and multiple glycosidic bonds will result in the formation of a polysaccharide and glycogen and starch are introduced as well as amylose and amylopectin as components of this latter polymer. The final part of the lesson considers how hydrolysis reactions allow polysaccharides and disaccharides to be broken back down into monosaccharides.
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Topic 1: Lifestyle, health and risk (Edexcel A-level Biology A)
As the 1st topic on the Pearson Edexcel A-level Biology A (Salters Nuffield) course, the Lifestyle, health and risk topic is extremely important to introduce the students to the detail needed for success in this subject. Extensive planning has gone into all 10 lessons included in this bundle to motivate and engage the students whilst covering the following specification points: * The importance of water * The structure and function of blood vessels * The cardiac cycle and the relationship between the structure and operation of the heart to its function * The course of events that lead to atherosclerosis * The blood clotting process * The differences between monosaccharides, disaccharides and polysaccharides * The structure and role of the monosaccharides * Understand how monosaccharides join to form disaccharides and polysaccharides through condensation reactions and are split through hydrolysis reactions * The relationship between the structure and roles of the polysaccharides * The synthesis of a triglyceride by the formation of ester bonds between glycerol and fatty acids * The difference between saturated and unsaturated lipids The PowerPoints and accompanying resources contain a wide variety of tasks which include exam-style questions with mark schemes, guided discussion points and quick quiz competitions.
£14.00
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Biological molecules (Edexcel SNAB)
This lesson bundle contains 10 lessons which have been designed to cover the Pearson Edexcel A-level Biology A (Salters Nuffield) specification points which focus on the structure and function of the biological molecules, including water, carbohydrates, lipids and proteins. The lesson PowerPoints are highly detailed, and along with their accompanying worksheets, they have been planned at length to contain a wide range of engaging tasks which cover the following A-level Biology content that's found in topics 1, 2 and 4 of the course: 1.2: Understand the importance of water as a solvent in transport, including its dipole nature 1.12 (i): Know the difference between monosaccharides, disaccharides and polysaccharides, including glycogen and starch (amylose and amylopectin) 1.12 (ii): Be able to relate the structures of monosaccharides, disaccharides and polysaccharides to their roles in providing and storing energy 1.13: Know how monosaccharides join to form disaccharides (sucrose, lactose and maltose) and polysaccharides (glycogen and amylose) through condensation reactions forming glycosidic bonds, and how these can be split through hydrolysis reactions 1.14 (i): Know how a triglyceride is synthesised by the formation of ester bonds during condensation reactions between glycerol and three fatty acids. 1.14 (ii): Know the differences between saturated and unsaturated lipids 2.9 (i): Know the basic structure of an amino acid 2.9 (ii): Understand the formation of polypeptides and proteins (amino acid monomers linked by peptide bonds in condensation reactions) 2.9 (iii): Understand the significance of a protein’s primary structure in determining its three-dimensional structure and properties (globular and fibrous proteins and the types of bonds involved in its three-dimensional structure) 2.10 (iv): Know the molecular structure of a globular protein and a fibrous protein and understand how their structures relate to their functions (including haemoglobin and collagen) 4.9: Understand the structure and function of the polysaccharides starch and cellulose, including the role of hydrogen bonds between β-glucose molecules in the formation of cellulose microfibrils
£10.00
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