This fully-resourced lesson describes the principles and limitations of optical, transmission electron and scanning electron microscopes. The engaging PowerPoint and accompanying resources have been designed to cover the specification details at the start of topic 2.1.3 of the AQA A-level Biology course and also explains the difference between magnification and resolution.
When designing all four of the lessons to cover the detail of 2.1.3, I was conscious that microscopes and the methods of studying cells is a topic that doesn’t always attract the full attention of the students. In line with this, I aimed to plan lessons that encouraged engagement so that the likelihood of knowledge retention and understanding was increased. An ongoing quiz competition runs across the 4 lessons and in this particular lesson, rounds such as YOU DO THE MATH and IT’S TIME FOR ACTION will introduce key terms and values in a fun and memorable way. Time is taken to look at the key details of each of the types of microscope and students will be able to describe how light or the transmission of electrons through or across a specimen will form an image. Students will come to recognise the difference between magnification and resolution and examples are provided and exam-style questions used to check on understanding. As well as current understanding checks, prior knowledge checks challenge the students to make links to other biological topics which include specialised cells and tissues, cell structures and biological molecules.
As detailed above, this lesson has been written to be the first in a series of 4 lessons and the others, which are uploaded are:
- Measuring the size of an object viewed under an optical microscope
- Use of the magnification formula
- Cell fractionation and ultracentrifugation
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Topic 2: Cells (AQA A-level Biology)
This bundle contains 19 PowerPoint lessons which are highly-detailed and are fully-resourced with differentiated worksheets. Intricate planning means that the wide range of activities included in these lessons will engage and motivate the students, check on their current understanding and their ability to make links to previously covered topics and most importantly will deepen their understanding of the following specification points in topic 2 (Cells) of the AQA A-level Biology specification: * Structure and function of the organelles in eukaryotic cells * The specialised cells in complex, multicellular organisms * The structure of prokaryotic cells * The structure of viruses which are acellular and non-living * The principles and limitations of optical, transmission electron and scanning electron microscopes * Measuring the size of an object under an optical microscope * Use of the magnification formula * The behaviour of chromosomes during the stages of the cell cycle * Binary fission * The basic structure of cell membranes * The role of phospholipids, proteins, glycoproteins, glycolipids and cholesterol * Simple diffusion * Facilitated diffusion * Osmosis, explained in terms of water potential * The role of carrier proteins and the hydrolysis of ATP in active transport * Co-transport as illustrated by the absorption of sodium ions and glucose by the cells lining the mammalian ileum * Recognition of different cells by the immune system * The identification of pathogens from antigens * The phagocytosis of pathogens * The cellular response involving T lymphocytes * The humoral response involving the production of antibodies by plasma cells * The structure of an antibody * The roles of plasma cells and memory cells in the primary and secondary immune response * The use of vaccines to protect populations * The differences between active and passive immunity * The structure of the human immunodeficiency virus and its replication in helper T cells * How HIV causes the symptoms of AIDS * Why antibiotics are ineffective against viruses * The use of antibodies in the ELISA test If you would like to sample the quality of these lessons, then download the eukaryotic animal cells, viruses, microscopes, osmosis, lymphocytes, HIV and AIDS lessons as these have been shared for free.
£25.00
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Topic 2.1: Cell structure (AQA A-level Biology)
This bundle of 8 lesson PowerPoints and accompanying resources contain a wide variety of tasks which will engage and motivate the students whilst covering the details of topic 2.1 of the AQA A-level Biology specification. Cells and their structure are linked to all of the other 7 topics in this course so a clear understanding is critical to a student's success. The tasks which include exam-style questions (with displayed mark schemes), discussion points and quiz competitions will cover the following parts of topic 2.1: * The structure and function of the cell-surface membrane, nucleus, nucleolus, mitochondria, chloroplasts, Golgi apparatus, lysosomes, ribosomes, RER and SER, cell wall and cell vacuole * The specialised cells of complex, multicellular organisms * The structures of a typical prokaryotic cell * The differences between prokaryotic and eukaryotic cells * The structure of viruses * The principles and limitations of optical microscopes, transmission electron microscopes and scanning electron microscopes * Measuring the size of an object using an optical microscope * Using the magnification formula If you would like to sample the quality of these lessons, then download the eukaryotic animal cells, viruses and microscopes lessons as these have been uploaded for free
£9.00
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Really not for me - poor layout, odd structure. Very different style of teaching
Great way to compare microscopes. Used as part of our intro to A level.
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