pptx, 8.45 MB
pptx, 8.45 MB
docx, 14.35 KB
docx, 14.35 KB
docx, 13.46 KB
docx, 13.46 KB
docx, 60.63 KB
docx, 60.63 KB

This lesson describes the key structural features of viruses and challenges the students to compare them against those of a bacteria as covered in topic 3. The PowerPoint and accompanying resource have primarily been designed to cover point 6.5 of the Pearson Edexcel A-level Biology A (Salters Nuffield) specification but can be used a revision tool for point 3.4 as students need to recall the structures of a prokaryotic cell.

Details of the COVID-19 epidemic are included in the lesson to increase relevance and to help students to understand this biological topic in greater depth. They will understand that a virus’ lack of cell structures results in an non-cellular classification and the fact that it is unable to reproduce without a host is one of the additional reasons that renders it as non-living. The main focus of the lesson is the nucleic acid, the capsid and the attachment proteins that are present in these microorganisms and time is taken to explain how these structures are involved in the infection of a host cell. The lipid membrane is also introduced and links are made to the previous lessons on eukaryotic cells. The final section of the lesson challenges the students to recognise the following prokaryotic cell structures from their descriptions:

  • plasmid
  • pili
  • capsule
  • cell wall
  • flagellum
  • circular DNA
  • ribosomes
  • mesosomes

This lesson has been specifically planned to link to the next lesson which covers point 6.6 on the infection of human cells by Mycobacterium tuberculosis and human immunodeficiency virus

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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

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