This lesson describes the origin of phagocytes and the sequence of events that occur during the phagocytosis of pathogens. The engaging and detailed PowerPoint and accompanying resources have been designed to cover point 11.1 (a) of the CIE International A-level Biology specification and also includes an introduction to antigen-presentation so that the students are prepared for the next lesson on the role of T and B lymphocytes
At the start of the lesson, the students are challenged to recall that cytosis is a suffix associated with transport mechanisms and this introduces phagocytosis as a form of endocytosis which takes in pathogens and foreign particles. This emphasis on key terminology runs throughout the course of the lesson and students are encouraged to consider how the start or end of a word can be used to determine meaning. The process of phagocytosis is then split into 5 key steps and time is taken to discuss the role of opsonins as well as the fusion of lysosomes and the release of lysozymes. A series of application questions are used to challenge the students on their ability to make links to related topics including an understanding of how the hydrolysis of the peptidoglycan wall of a bacteria results in lysis. Students will be able to distinguish between neutrophils and monocytes from a diagram and at this point, the role of macrophages and dendritic cells as antigen-presenting cells is described so that it can be used in the next lesson. The lesson concludes with a brief introduction to lymphocytes so that initial links between phagocytosis and the specific immune responses are made.
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Topics 10 & 11: Infectious disease & Immunity (CIE A-level Biology)
This lesson bundle contains 9 detailed and engaging lessons which have been designed to cover the following content in topics 10 & 11 of the CIE A-level Biology specification: 10.1: Infectious diseases * The meaning of the term disease and the difference between infectious and non-infectious diseases * The name and type of pathogen that causes cholera, malaria, TB, HIV/AIDS, smallpox and measles * Explain how cholera, malaria, TB, HIV and measles are transmitted 10.2: Antibiotics * Outline how penicillin acts on bacteria and why antibiotics do not affect viruses * Outline how bacteria become resistant to antibiotics with reference to mutation and selection * Discuss the consequences of antibiotic resistance and the steps that can be taken to reduce its impact 11.1: The immune system * State that phagocytes have their origin in bone marrow and describe their mode of action * Describe the modes of action of B and T lymphocytes * The meaning of the term immune response, with reference to antigens, self and non-self * Explain the role of memory cells in long term immunity * Autoimmune diseases as exemplified by myasthenia gravis 11.2: Antibodies and vaccination * Relate the molecular structure of antibodies to their functions * Distinguish between active and passive, natural and artificial immunity and explain how vaccination can control disease Each of the lesson PowerPoints is accompanied by worksheets which together contain a wide range of tasks that will engage and motivate the students whilst challenging them on their understanding of the current topic as well as previously-covered topics. If you would like to get an understanding of the quality of the lessons in this bundle, then download the transmission of infectious diseases and phagocytes and phagocytosis lessons as these have been shared for free.
£13.00
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Topic 11.1: The immune system (CIE A-level Biology)
The 4 lessons contained within this bundle are detailed and will engage the students whilst covering the following content in topic 11.1 of the CIE A-level Biology specification: * State that phagocytes have their origin in bone marrow and describe their mode of action * Describe the modes of action of B-lymphocytes and T-lymphocytes * Explain the meaning of the term immune response, making reference to the terms antigen, self and non-self * Explain the role of memory cells in long-term immunity * Explain, with reference to myasthenia gravis, that the immune system sometimes fails to distinguish between self and non-self The PowerPoints and accompanying resources contain a wide range of tasks, which include exam-style questions, guided discussion periods and quiz competitions, and these have been designed to check on the students' understanding of the current topic as well as previously-covered topics
£6.00
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Topic 11: Immunity (CIE A-level Biology)
The 5 lessons included in this bundle are all fully-resourced and contain a wide range of activities that will motivate and engage the students whilst covering the content as detailed in topic 11 of the CIE A-level Biology specification (Immunity). Exam-style questions which check on current and prior understanding, differentiated tasks, discussion points and quick quiz competitions cover the following specification points: * Phagocytes have their origin in bone marrow * Phagocytosis * The modes of action of B and T lymphocytes * The meaning of term immune response, with reference to the terms antigen, self and non-self * The role of memory cells in long term immunity * Autoimmune diseases * The relationship between the structure and function of antibodies * Distinguish between active and passive immunity * The use of vaccinations to control disease If you would like to sample the quality of these lessons, download the phagocytes and phagocytosis lesson as this has been uploaded for free
£7.50
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