This lesson describes the structure of messenger and transfer RNA and compares this against the structure of DNA. The engaging and detailed PowerPoint and accompanying resource have been designed to cover points 1.4 (iv) and (v) as detailed in the Edexcel A-level Biology B specification which states that students should be able to describe the structure of the two forms of this nucleic acid. Students were introduced to the detailed structure of a nucleotide and DNA in the first lesson of topic 1.4, so this lesson is written to tie in with those and continuously challenge prior knowledge as well as the understanding of the current topic.
The lesson begins with the introduction of RNA as a member of the family of nucleic acids and this enables students to recognise that this polynuclotide shares a number of structural features that were previously seen in DNA. A quiz round called “A FAMILY AFFAIR” is used to challenge their knowledge of DNA to recognise those features that are also found on RNA such as the chain of linked nucleotides, pentose sugars, nitrogenous bases and phosphodiester bonds. The next task pushes them to consider features that have not been mentioned and therefore are differences as they answer a structured exam-style question on how RNA differs from DNA. Students will learn that RNA is shorter than DNA and this leads into the final part of the lesson where mRNA and tRNA are introduced and again they are challenged to use the new information explain the difference in size. Brief details of transcription and then translation are provided so that students are prepared for the upcoming lessons on protein synthesis
Get this resource as part of a bundle and save up to 42%
A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.
Bundle
Topic 1: Biological molecules (Edexcel A-level Biology B)
The biological molecules topic is incredibly important, not just because it is found at the start of the course, but also because of its detailed content which must be well understood to promote success with the other 9 Edexcel A-level Biology B topics. Many hours of intricate planning has gone into the design of all of the 18 lessons that are included in this bundle to ensure that the content is covered in detail, understanding is constantly checked and misconceptions addressed and that engagement is high. This is achieved through the wide variety of tasks in the PowerPoints and accompanying worksheets which include exam-style questions with clear answers, discussion points, differentiated tasks and quick quiz competitions. The following specification points are covered by the lessons within this bundle: * The differences between monosaccharides, disaccharides and polysaccharides * The structure of glucose and ribose * The formation of disaccharides and polysaccharides from monosaccharides * The structure of starch, glycogen and cellulose * The synthesis of a triglyceride * The differences between saturated and unsaturated lipids * The relationship between the structure of lipids and their roles * The structure and properties of phospholipids * The structure of an amino acid * The formation of polypeptides and proteins * The role of ionic, hydrogen and disulphide bonding in proteins * The levels of protein structure * The structure of collagen and haemoglobin * The structure of DNA * The semi-conservative replication of DNA * A gene is a sequence of bases on DNA that codes for an amino acid sequence * The structure of mRNA * The structure of tRNA * The process of transcription * The process of translation * Base deletions, insertions and substitutions as gene mutations * The effect of point mutations on amino acid sequences * The structure of enzymes as globular proteins * The concept of specificity and the induced-fit hypothesis * Enzymes are catalysts that reduce activation energy * Understand how temperature affects enzyme activity * Enzymes catalyse a wide range of intracellular reactions as well as extracellular ones * The importance of water for living organisms Due to the detail included in these lessons, it is estimated that it will take in excess of 2 months of allocated A-level teaching time to complete. If you would like to see the quality of the lessons then download the monosaccharides, disaccharides and polysaccharides, glucose and ribose, triglycerides, structure of DNA and transcription lessons as these have been uploaded for free.
£20.00
Bundle
Topic 1.4: DNA and protein synthesis (Edexcel A-level Biology B)
This bundle of 6 fully-resourced lessons have been designed to cover the content as detailed in topic 1.4 of the Edexcel A-level Biology B specification. The specification points in this DNA and protein synthesis topic which are covered by the lessons are as follows: * The structure of DNA * The semi-conservative replication of DNA * A gene is a sequence of bases on DNA that codes for an amino acid sequence * The structure of mRNA * The structure of tRNA * The process of transcription * The process of translation * Base deletions, insertions and substitutions as gene mutations * The effect of point mutations on amino acid sequences The engaging PowerPoint lessons and accompanying resources contain a wide range of activities and tasks that include exam-style questions with displayed mark schemes, quick quiz competitions, useful hints and discussion periods. If you would like to see the quality of the lessons then download the structure of DNA and transcription lessons as these have been uploaded for free.
£7.00
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.
£2.00