This lesson outlines the need for energy in living organisms, and describes how ATP is formed by phosphorylation in respiration and photosynthesis. The engaging and detailed PowerPoint and accompanying resources have been primarily designed to cover points 12.1 (a, b, c & e) of the CIE A-level Biology specification but can be used as a revision of topics 1, 4 and 6 as the students knowledge of cell structure, membrane transport and ATP is constantly challenged.
As this is the first lesson in topic 12 (respiration), it has been specifically planned to act as an introduction to this cellular reaction and provides important details about glycolysis, the Krebs cycle and oxidative phosphorylation that will support the students to make significant progress when these stages are covered during individual lessons. Photophosphorylation is also introduced so students are prepared for the light-dependent reaction of photosynthesis in topic 13.
The main focus of the start of the lesson is the demonstration of the need for energy in a variety of reactions that occur in living organisms. Students met ATP in topics 1 and 6, so a spot the errors task is used to check on their recall of the structure and function of this molecule. This will act to remind them that the release of energy from the hydrolysis of ATP can be coupled to energy-driven reactions in the cell such as active transport and a series of exam-style questions are used to challenge them on their knowledge of this form of membrane transport. They will also see how energy is needed for protein synthesis and DNA replication and the maintenance of resting potential, before more questions challenge them to apply their knowledge of cell structure and transport to explain how it is needed during the events at a synapse.
The rest of the lesson focuses on the production of ATP by substrate-level, oxidative and photophosphorylation and the students will learn when ATP is formed by each of these reactions and will see how the electron transport chain in the membranes in the mitochondria and chloroplast is involved
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Topics 12 & 13: Respiration and photosynthesis (CIE A-level Biology)
Respiration and photosynthesis are two of the most commonly-assessed topics in the terminal A-level exams but are often poorly understood by students. These 14 lessons have been intricately planned to contain a wide range of activities that will engage and motivate the students whilst covering the key detail to try to deepen their understanding and includes exam-style questions so they are fully prepared for these assessments. The following specification points in topics 12 and 13 of the CIE A-level Biology course are covered by these lessons: * The need for energy in living organisms * The features of ATP * The synthesis of ATP by substrate-level phosphorylation in glycolysis and the Krebs cycle * The roles of the coenzymes in respiration * The synthesis of ATP through the electron transport chain in the mitochondria and chloroplasts * The relative energy values of carbohydrates, lipids and proteins as respiratory substrates * Determining the respiratory quotient from equations for respiration * The four stages of aerobic respiration * An outline of glycolysis * When oxygen is available, pyruvate is converted into acetyl CoA in the link reaction * The steps of the Krebs cycle * Oxidative phosphorylation * The relationship between the structure and function of the mitochondrion * Distinguish between aerobic and anaerobic respiration in mammalian tissue and in yeast cells * Anaerobic respiration generates a small yield of ATP and builds up an oxygen debt * The products of the light-dependent stage are used in the Calvin cycle * The structure of a chloroplast and the sites of the light-dependent and light-independent stages of photosynthesis * The light-dependent stage of photosynthesis * The three stages of the Calvin cycle * The conversion of Calvin cycle intermediates to carbohydrates, lipids and amino acids * Explain the term limiting factor in relation to photosynthesis * Explain the effects of changes in light intensity, carbon dioxide concentration and temperature on the rate of photosynthesis * Explain how an understanding of limiting factors is used to increase crop yields in protected environments Due to the detail of these lessons, it is estimated that it will take up to 2 months of allocated A-level teaching time to cover the detail included in the slides of these lessons If you would like to sample the quality of the lessons, download the roles of the coenzymes, the Krebs cycle and the products of the Calvin cycle lessons as these have been shared for free
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Topic 12: Energy and respiration (CIE A-level Biology)
Topic 12 tends to be the 1st topic to be taught in the second year of the CIE A-level Biology course and these 9 lessons are filled with a wide variety of differentiated tasks that will immediately engage and motivate the students whilst ensuring that the detailed content is covered. It is critical that students understand how energy in the form of ATP is produced by aerobic and anaerobic respiration and are able to describe the energy-driven reactions like active transport that need this input. For this reason, the lessons contain multiple understanding checks which assess the students on their current knowledge as well as checking on their ability to link to previously-covered topics. The following specification points in topic 12 of the CIE A-level Biology specification are covered in these lessons: * The need for energy in living organisms * The features of ATP that make this molecule suitable as the energy currency * Substrate-level phosphorylation in glycolysis and the Krebs cycle * The role of the coenzymes in respiration * The involvement of the electron transport chain that's found in the mitochondria and chloroplast membranes in the production of ATP * The four stages of aerobic respiration * Glycolysis * The link reaction * The Krebs cycle * Oxidative phosphorylation * The structure of the mitochondrion * The differences between aerobic and anaerobic respiration * The oxygen debt If you would like to sample the quality of these lessons, then download the roles of the coenzymes and the Krebs cycle lessons as these have been uploaded for free
£14.00
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