This fully-resourced lesson describes how triglycerides are formed during condensation reactions and compares saturated and unsaturated lipids. The engaging PowerPoint and accompanying worksheets have been designed to cover the points 1.14 (i) & (ii) of the Pearson Edexcel A-level Biology A specification and links are also made to related future topics such as the importance of the myelin sheath for the conduction of an electrical impulse.
The lesson begins with a focus on the basic structure and roles of lipids, including the elements that are found in this biological molecule and some of the places in living organisms where they are found. Moving forwards, the students are challenged to recall the structure of the carbohydrates from topics 1.12 & 1.13 so that the structure of a triglyceride can be introduced. Students will learn that this macromolecule is formed from one glycerol molecule and three fatty acids and have to use their understanding of condensation reactions to draw the final structure. Time is taken to look at the difference in structure and properties of saturated and unsaturated fatty acids and students will be able to identify one from the other when presented with a molecular formula. The final part of the lesson explores how the various properties of a triglyceride mean that it has numerous roles in organisms including that of an energy store and source and as an insulator of heat and electricity.
Get this resource as part of a bundle and save up to 33%
A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.
Bundle
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
Bundle
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 9 of the 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 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.
£12.00
Something went wrong, please try again later.
This resource hasn't been reviewed yet
To ensure quality for our reviews, only customers who have purchased this resource can review it
Report this resourceto let us know if it violates our terms and conditions.
Our customer service team will review your report and will be in touch.
£2.00