This lesson describes the ring structure of alpha and beta glucose and uses these two monomers as examples of monosaccharides when introducing disaccharides and polysaccharides as well as polymers and macromolecules. The PowerPoint and accompanying worksheet have been designed to cover specification points 2.2 (a) & (b) of the CIE International A-level Biology course, and condensation and hydrolysis reactions are also introduced and their importance for biological molecules emphasised.
Monomers were previously met at GCSE and so the beginning of the lesson focuses on the recall of the meaning of this key term. A made-up version of the quiz show POINTLESS gives the students the opportunity to discuss and 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. This introduces the monosaccharides as the simplest sugars before the first in a series of quiz rounds is used to introduce fructose, ribose and importantly glucose as a few examples. Using the molecular formula of glucose as a guide, students will be given the general formula for the monosaccharides and will learn that deoxyribose is an exception to the rule that the number of carbon and oxygen atoms are equal. In the next task, students have to study the displayed formula of glucose for two minutes without being able to note anything down before they are challenged to recreate what they saw in a test of their observational skills. The difference between alpha and beta-glucose is provided and students are again challenged to draw a molecule of glucose, this time for the beta form. Moving forwards, students will learn that disaccharides are formed from two monosaccharides and this is used to initiate a discussion about how monomers need to be linked together even more times to make the larger chains known as polymers. The final section of the lesson looks at the roles of condensation and hydrolysis reactions in this formation of larger molecules as well as in the break down of larger molecules into smaller molecules.
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Topics 1 & 2: Cell structure & Biological molecules (CIE A-level Biology)
It's no coincidence that cell structure and biological molecules find themselves as topics 1 and 2 of the CIE A-level Biology course, because a clear understanding of their content is absolutely critical to promote success with the 17 topics that follow. Hours and hours of intricate planning has gone into the 18 lessons included in this bundle to ensure that the detailed content is relevant and can be understood and that links are made to related sections of topics 3 - 19. The lesson PowerPoints and accompanying resources contain a wide range of activities that include: * differentiated exam-style questions with clear mark schemes * directed discussion points * quiz competitions to introduce key terms and values * current understanding and prior knowledge checks Due to the detail included in these lessons, it is estimated that it will take in excess of 2 months of allocated teaching time to cover the content of the resources A number of the resources have been shared for free so these can be downloaded in order to sample the quality of the lessons
£20.00
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Topic 2: Biological molecules (CIE International A-level Biology)
The biological molecules topic is incredibly important, not just because it is found near to the start of the course, but also because of its detailed content which must be well understood to promote success with the other 18 CIE International A-level Biology topics. Many hours of intricate planning have gone into the design of all of the 11 lessons that are included in this bundle to ensure that the content is covered in detail, understanding is constantly checked and misconceptions addressed and that engagement is high. This is achieved through the wide variety of tasks in the PowerPoints and accompanying worksheets which include exam-style questions with clear answers, discussion points, differentiated tasks and quick quiz competitions. The following specification points are covered by the lessons within this bundle: * Tests for reducing and non-reducing sugars * The iodine test for starch * The emulsion test for lipids * The biuret test for proteins * The ring forms of alpha and beta glucose * The meaning of the terms monomer, polymer, macromolecule, monosaccharide, disaccharide and polysaccharide * The formation of a glycosidic bond by a condensation reaction * The breakage of glycosidic bonds by hydrolysis reactions * The relationship between the molecular structure and functions of a triglyceride * The relationship between the structure and functions of a phospholipid * The structure of an amino acid and the formation and breakage of a peptide bond * The meaning of the different protein structures and the types of bonding that hold these molecules in shape * The molecular structure of haemoglobin and collagen as examples of globular and fibrous proteins * The relationship between the properties and roles of water in living organisms The lesson on the biuret test for proteins and the emulsion test for lipids also contains a section which can be used for the revision of topics 2.2 and 2.3 Due to the detail of each of these lessons, it is estimated that it will take in excess of 4 weeks of allocated teaching time to cover the content. If you would like to see the quality of the lessons, download the alpha and beta glucose, phospholipids and haemoglobin and collagen lessons as these have been shared for free
£15.00
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Topic 2.2: Carbohydrates and lipids (CIE A-level Biology)
This bundle contains 5 detailed and engaging lessons that cover the content in topic 2.2 of the CIE International A-level Biology course. Due to the importance of these biological molecules in living organisms, this mini-topic is fundamental to the whole course and planning has taken account of this with extra time given to those key details which must be understood. The PowerPoints and accompanying resources contain a wide range of activities which include discussion points, current understanding and prior knowledge checks and quiz competitions. The following specification points are covered in this bundle: * The ring forms of alpha and beta glucose * The meaning of the terms monomer, polymer, macromolecule, monosaccharide, disaccharide and polysaccharide * The formation and breakage of glycosidic bonds by condensation and hydrolysis reactions * The molecular structure of a triglyceride * The relationship between the structure and functions of triglycerides in living organisms * The structure and functions of phospholipids If you would like to sample the quality of the lessons, download the glucose and phospholipids lessons as these have been shared for free
£5.50
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