pptx, 1.71 MB
pptx, 1.71 MB
docx, 13.9 KB
docx, 13.9 KB
docx, 13.09 KB
docx, 13.09 KB
docx, 17.02 KB
docx, 17.02 KB
docx, 13.6 KB
docx, 13.6 KB

This fully-resourced lesson describes the non-specific responses of the body to infection and includes details of phagocytosis, inflammation and interferon release. The engaging and detailed PowerPoint and accompanying resources have been primarily designed to cover the content of point 6.7 of the Pearson Edexcel A-level Biology A specification but topics including antigen-presentation are also introduced to prepare students for upcoming lessons on the immune response (6.8 & 6.9).

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 importance of cell signalling for an effective immune response is discussed and the rest of the lesson focuses on the release of two chemicals - interferons and histamine. During the interferon section, references are made to a previous lesson on HIV structure and action so students can understand how the release of these signalling proteins helps neighbouring cells to heighten their anti-viral defences. A step by step guide is used to describe the release of histamine in the inflammatory response and the final task challenges students to use this support to form a detailed answer regarding the steps in inflammation.

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

Topic 6: Immunity, infection and forensics (Edexcel A-level Biology A)

This lesson bundle contains 9 lesson PowerPoints and their accompanying resources which have been intricately planned to deliver the detailed content of topic 6 of the Pearson Edexcel A-level Biology A (Salters Nuffield) specification and to make links to the 5 previously covered topics. In addition to the detailed content, each lesson contains exam-style questions with mark schemes embedded into the PowerPoint, differentiated tasks, guided discussion points and quick quiz competitions to introduce key terms and values in a fun and memorable way. The following specification points are covered by the lessons in this bundle: * DNA can be amplified using the PCR * Comparing the structure of bacteria and viruses * Understand how Mycobacterium tuberculosis and human immunodeficiency virus infact human cells * The non-specific responses of the body to infection * The roles of antigens and antibodies in the body's immune response * The differences in the roles of the B and T cells in the body's immune response * Understand how one gene can give rise to more than one protein * The development of immunity * The major routes that pathogens may take when entering the body * The role of barriers in protecting the body from infection * The difference between bacteriostatic and bactericidal antibiotics If you would like to sample the quality of the lessons in this bundle, then download the immune response and post-transcriptional changes lessons as these have been uploaded for free

£14.00

Reviews

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.