A Science teacher by trade, I've also been known to be found teaching Maths and PE! However, strange as it may seem, my real love is designing resources that can be used by other teachers to maximise the experience of the students. I am constantly thinking of new ways to engage a student with a topic and try to implement that in the design of the lessons.
A Science teacher by trade, I've also been known to be found teaching Maths and PE! However, strange as it may seem, my real love is designing resources that can be used by other teachers to maximise the experience of the students. I am constantly thinking of new ways to engage a student with a topic and try to implement that in the design of the lessons.
This fully-resourced lesson describes the beneficial, neutral and harmful effects of gene mutations on the primary structure of a polypeptide. The engaging and detailed PowerPoint and accompanying resources have been designed to cover point 6.1.1 (a) of the OCR A-level Biology A specification which states that students should be able to understand how substitutions, deletions and insertions change the base sequence and describe how this affects protein production and function.
In order to understand how a change in the base sequence can affect the order of the amino acids, students must be confident in their understanding and application of protein synthesis which was covered in module 2.1.3. Therefore, the start of the lesson focuses on transcription and translation and students are guided through the use of the codon table to identify amino acids. Moving forwards, a task called known as THE WALL is used to introduce to the names of three types of gene mutation whilst challenging the students to recognise terms which are associated with the genetic code and were met back in 2.1.3. The main focus of the lesson is base substitutions and how these mutations may or may not cause a change to the amino acid sequence. The students are challenged to use their knowledge of the degenerate nature of the genetic code to explain how a silent mutation can result. The rest of the lesson looks at base deletions and base insertions and students are introduced to the idea of a frameshift mutation. One particular task challenges the students to evaluate the statement that base deletions have a bigger impact on primary structure than base substitutions. This is a differentiated task and they have to compare the fact that the reading frame is shifted by a deletion against the change in a single base by a substitution
This detailed and fully-resourced lesson describes the relationship between the structure and function of the polysaccharides: glycogen, starch and cellulose. The engaging PowerPoint and accompanying resources have been designed to cover the third part of point 1.2 of the AQA A-level Biology specification and clear links are also made to the previous lessons in this topic where the monosaccharides and disaccharides were introduced.
By the end of this lesson, students should understand how key structural features like the 1 - 4 and 1 - 6 glycosidic bonds and the hydrogen bonds dictate whether the polysaccharide chain is branched or unbranched and also whether it spirals or not. Following the description of the structure of glycogen, students are challenged to design an exam question in the form of a comparison table so that it can be completed as the lesson progresses once they learn more about starch and cellulose. This includes a split in the starch section of the table so that the differing structures and properties of amylose and amylopectin can be considered. In the final part of the lesson, time is taken to focus on the formation of cellulose microfibrils and macrofibrils to explain how plant cells have the additional strength needed to support the whole plant.
Due to the detail included in this lesson, it is estimated that it will take in excess of 2 hours of allocated teaching time to complete
This engaging lesson describes the structure, properties and functions of the monosaccharides, disaccharides and polysaccharides. The PowerPoint lesson has been designed to cover point [c] as detailed in AS unit 1, topic 1 of the WJEC A-level Biology specification and it makes clear links to the upcoming lessons in this topic on alpha and beta glucose and the properties of starch, glycogen, cellulose and chitin.
The lesson begins with a made-up round of the quiz show POINTLESS, where students have to try to identify four answers to do with carbohydrates. In doing so, they will learn or recall that these molecules are made from carbon, hydrogen and oxygen, that they are a source of energy which can sometimes be rightly or wrongly associated with obesity and that the names of the three main groups is derived from the Greek word sakkharon. A number of quick quiz rounds have been written into the lesson to introduce key terms in a fun and memorable way and the first round allows the students to meet some of common monosaccharides. Moving forwards, students will learn that a disaccharide is formed when two of these monomers are joined together and they are then challenged on their knowledge of condensation reactions which were originally encountered during the lesson on water. Students will understand how multiple reactions and multiple glycosidic bonds will result in the formation of a polysaccharide and glycogen, starch and cellulose are recalled and there is a brief introduction to chitin. The final part of the lesson considers how hydrolysis reactions allow polysaccharides and disaccharides to be broken back down into monosaccharides.
This fully-resourced lesson explores how reproductive isolation can potentially lead to the formation of a new species by speciation . The engaging PowerPoint and accompanying resources have been designed to cover point 5.19 of the Pearson Edexcel A-level Biology A (Salters Nuffield) specification which states that students should understand how isolation reduces gene flow between populations which can lead to allopatric or sympatric speciation.
The lesson begins by using the example of a hinny, which is the hybrid offspring of a horse and a donkey, to challenge students to recall the biological classification of a species. Moving forwards, students are introduced to the idea of speciation and the key components of this process, such as isolation and selection pressures, are covered and discussed in detail. Understanding and prior knowledge checks are included throughout the lesson to allow the students to not only assess their progress against the current topic but also to make links to earlier topics in the specification. Time is taken to look at the details of allopatric speciation and how the different mutations that arise in the isolated populations and genetic drift will lead to genetic changes. The example of allopatric speciation in wrasse fish because of the isthmus of Panama is used to allow the students to visualise this process. The final part of the lesson considers sympatric speciation and again a wide variety of tasks are used to enable a deep understanding to be developed.
This lesson describes the role of the rER and the Golgi apparatus in the formation of proteins, the transport within cells and their secretion. The PowerPoint and accompanying resources have been designed to cover point 3.4 of the Edexcel International A-level Biology specification and also includes key details about the role of the cytoskeleton in the transport of the vesicles that contain the protein between the organelles and the membrane.
The lesson begins with the introduction of the cytoskeleton and explains how this network of protein structures transverses across the cytoplasm and is fundamental to the transport of molecules between organelles. The lesson has been planned to closely tie in with the previous lesson on the ultrastructure of eukaryotic cells and students are challenged on their knowledge of the function of the organelles involved in protein formation (and modification) through a series of exam-style questions. By comparing their answers against the mark scheme embedded in the PowerPoint, students will be able to assess their understanding of the following:
Transcription in the nucleus to form an mRNA strand and the exit of this nucleic acid through the nuclear pore
Translation at the ribosomes on the surface of the rER to assemble the protein
Transport of the vesicles containing the protein to the Golgi apparatus
Modification of the protein at the Golgi apparatus
Formation of the Golgi vesicle and its transport to the cell membrane for exocytosis
Time is taken to discuss the finer details of this process such as the arrival of the vesicle at the cis face and the transport away from the trans face and the requirement of ATP for the transport of the vesicles along the microtubule track and exocytosis.
The remainder of the lesson uses a series of exam-style questions about digestive enzymes (extracellular proteins) to challenge the students on their recall of the structure of starch and proteins
This bundle of 10 lessons covers the majority of the content in Topic B1 (Cell Biology) of the AQA Trilogy GCSE Combined Science specification. The topics covered within these lessons include:
Cells
Microscopy
Cell differentiation and specialisation
Chromosomes and mitosis
Stem cells
Diffusion
Osmosis
Active transport
Exchange surfaces
Exchanging substances
All of these lesson presentations and accompanying resources are detailed and engaging and contain regular progress checks to allow the students to constantly assess their understanding.
This bundle of 15 lessons covers the majority of the content in Topic B3 (Organism level systems) of the OCR Gateway A GCSE Biology specification. The topics covered within these lessons include:
The nervous system
The eye
Hormones and the endocrine system
Adrenaline
Negative feedback loops
Thyroid gland and thyroxine
The menstrual cycle
Contraception
Using hormones to treat infertility
Plant hormones
Homeostasis
Controlling body temperature
Controlling blood glucose
Diabetes
Inside the kidney
All of these lesson presentations and accompanying resources are detailed and engaging and contain regular progress checks to allow the students to constantly assess their understanding.
This highly detailed, fully-resourced lesson has been designed to cover the content of specification point 5.1.4 (d) of the OCR A-level Biology A specification which states that students should be able to demonstrate and apply an understanding of the regulation of blood glucose concentration. There is focus on the negative feedback mechanisms that release insulin or glucagon and the role of the liver. It challenges the students recall of the control of insulin release from the beta cells which was taught in an earlier lesson.
A wide range of activities will maintain motivation and engagement whilst the content is covered in detail to enable the students to explain how the receptors in the pancreas detect the concentration change and how the hormones attaching to receptor sites on the liver triggers a series of events in this effector organ. This is a topic which has a huge amount of difficult terminology so time is taken to look at all of the key words, especially those which begin with the letter G so students are able to use them accurately in the correct context. The action of adrenaline is also considered and linked to the breakdown of glycogen to glucose during glycogenolysis.
This lesson has been written for students studying on the OCR A-level Biology A course and ties in with the lesson on the differences between type I and II diabetes mellitus as well as the human endocrine system
This engaging and fully-resourced lesson looks at the effects of stabilising, directional and disruptive selection as the three main types of selection. The PowerPoint and accompanying resources have been designed to cover the 3rd part of point 7.3 of the AQA A-level Biology specification which states that students should be able to identify each type of selection by its effect on different phenotypes.
The lesson begins with an introduction to the mark, release, recapture method to calculate numbers of rabbits with different coloured fur in a particular habitat. This method is covered later in topic 7 so this section of the lesson is designed purely to generate changes in numbers of the organisms. Sketch graphs are then constructed to show the changes in the population size in this example. A quick quiz competition is used to engage the students whilst introducing the names of the three main types of selection before a class discussion point encourages the students to recognise which specific type of selection is represented by the rabbits. Key terminology including intermediate and extreme phenotypes and selection pressure are used to emphasise their importance during explanations. A change in the environment of the habitat and a change in the numbers of the rabbits introduces directional selection before students will be given time to discuss and to predict the shape of the sketch graph for disruptive selection. Students are challenged to apply their knowledge in the final task of the lesson by choosing the correct type of selection when presented with details of a population and answer related questions.
The topics of selection, evolution, biodiversity, classification and conservation are key concepts in Biology, that are regularly assessed in the exams, but are not always that well understood by the students. With this at the forefront of the lesson design, these 16 lesson PowerPoints and their accompanying resources have been intricately planned to cover the detailed content of topics 17 & 18 of the CIE A-level Biology specification through the use of a wide range of tasks to engage and motivate the students. There are plenty of opportunities for the students to assess their current understanding through the completion of exam-style questions and also to check on their prior knowledge by making links to earlier topics.
The following specification points are covered by these lessons:
Topic 17.1: Variation
The differences between continuous and discontinuous variation
Using the t-test to compare the variation of two different populations
The importance of genetic variation in selection
Topic 17.2: Natural and artificial selection
Natural selection
Explain how environmental factors can act as stabilising, disruptive and directional forces of natural selection
Explain how the founder effect and genetic drift may affect allele frequencies in populations
Use the Hardy-Weinberg principle
Topic 17.3: Evolution
The molecular evidence that reveals similarities between closely related organisms
Explain how speciation may occur
Topic 18.1: Biodiversity
Define the terms species, ecosystem and niche
Explain that biodiversity is considered at three levels
Explain the importance of random sampling in determining the biodiversity of an area
Use suitable methods to assess the distribution and abundance of organisms in a local area
Use the Spearman’s rank correlation to analyse relationships between data
Use Simpson’s index of diversity
Topic 18.2: Classification
The classification of species into taxonomic hierarchy
The characteristic features of the three domains
The characteristic features of the kingdoms
Explain why viruses are not included in the three domain classification
Topic 18.3: Conservation
The reasons for the need to maintain biodiversity
Methods of protecting endangered species
The roles of organisations like the WWF and CITES in local and global conservation
If you would like to sample the quality of the lessons that are included in this bundle then download the following as these have been shared for free:
Continuous and discontinuous variation
Molecular evidence & evolution
Spearman’s rank correlation
WWF, CITES and conservation
It is estimated that it will take up to 2 months of A-level Biology teaching time to cover the detail included in these lessons
These 9 lessons are highly detailed and are filled with a wide range of tasks that will engage the students whilst covering the following specification points in topics 4.4, 4.5, 4.6 and 4.7 of the AQA A-level Biology specification:
4.4
Genetic diversity as the number of different alleles of genes in a population and a factor enabling natural selection to occur
The principles of natural selection in the evolution of populations
Directional and stabilising selection
Natural selection results in anatomical, physiological or behavioural adaptations
4.5
Two organisms belong to the same species if they are able to produce fertile offspring
The taxonomic hierarchy comprising domain, kingdom, phylum, class, order, family, genus and species
The use of the binomial name to identify species
4.6
Biodiversity can relate to a range of habitats
Species richness
Calculating an index of diversity
The balance between conservation and farming
4.7
Investigating genetic diversity with, or between species, by comparing observable characteristics or nucleic acids and the structure of proteins
Calculating and interpreting the mean and standard deviation
If you download the natural selection and standard deviation lessons which have been shared for free then you will be able to see the quality of lessons included in this bundle
An informative and engaging lesson (46 slides) that looks at the topic of immobilised enzymes and focusses on ensuring that students understand this topic around three main ideas. By the end of the lesson, students will be able to explain why immobilised enzymes are used, describe the different methods by which they are produced and describe some of their uses in biotechnology. Time is taken throughout the lesson to make sure that students understand the disadvantages associated with this process and that they are able to explain the specific limitations of each method.
This lesson has been designed for students studying A-level Biology
This fully-resourced lesson explores what happens to lactate after a period of anaerobic respiration as detailed in point 7.7 of the Pearson Edexcel A-level Biology A (Salters Nuffield) specification. Students will learn how pyruvate is converted to lactate using reduced NAD and that the reoxidation of the coenzyme allows glycolysis to continue.
The lesson begins with a focus on the coenzyme, NAD, and students are challenged to recall details of its role in the oxidation of triose phosphate. Students will learn that oxidative phosphorylation in aerobic respiration allows these coenzymes to be reoxidised but that another metabolic pathway has to operate when there is no oxygen. Time is taken to go through the lactate fermentation pathway and students are encouraged to discuss the conversions before applying their knowledge to complete the diagram and passages about the pathway. Students are introduced to the oxygen debt and will learn how the volume consumed after vigorous exercise is used to catabolise lactic acid and to restore the body’s stores to normal levels.
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 19 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 role of inorganic ions in plants
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.
This detailed lesson has been written to cover the part of specification point 6.4.3 of the AQA A-level Biology specification which states that students should be able to describe how the structure of the nephron allows for the formation of glomerular filtrate. The aim of the design was to give the students the opportunity to discover the function of ultrafiltration and to be able to explain how the mechanisms found in the glomerulus and the Bowman’s capsule control the movement of small molecules out of the blood plasma. Key terminology is used throughout and students will learn how the combination of the capillary endothelium and the podocytes creates filtration slits that allow glucose, water, urea and ions through into the Bowman’s capsule but ensure that blood cells and plasma proteins remain in the bloodstream. A number of quiz competitions are used to introduce key terms and values in a fun and memorable way whilst understanding and prior knowledge checks allow the students to assess their understanding of the current topic and to challenge themselves to make links to earlier topics. The final task of the lesson challenges the students to apply their knowledge by recognising substances found in a urine sample that shouldn’t be present and to explain why this would cause a problem
This lesson has been written for students studying on the AQA A-level course and ties in nicely with the other kidney lessons on the structure of the nephron, selective reabsorption and osmoregulation
This lesson introduces monomers, polymers, condensation and hydrolysis reactions and chemical bonds to prepare students for the rest of topic 1 (biological molecules). The PowerPoint and accompanying worksheet cover point 1.1 of the AQA A-level Biology course, and as this is likely to be the very first lesson that the students encounter, the range of engaging tasks have been specifically designed to increase the likelihood of the key points and fundamentals being retained.
Monomers were previously met at GCSE and so the beginning of the lesson focuses on the recall of the meaning of this key term before the first in a series of quiz rounds is used to introduce nucleotides, amino acids and monosaccharides as a few of the examples that will be met in this topic. Dipeptides and disaccharides are introduced as structures containing 2 amino acids or sugars respectively and this is used to initiate a discussion about how monomers need to be linked together even more times to make the larger chains known as polymers. At this point in the lesson, the students are given the definition of a condensation reaction and then challenged to identify where the molecule of water is eliminated from when two molecules of glucose join. A series of important prefixes and suffixes are then provided and students use these to predict the name of the reaction which has the opposite effect to a condensation reaction - a hydrolysis reaction.
Links to upcoming lessons are made throughout the PowerPoint to encourage students to begin to recognise the importance of making connections between topics.
This fully-resourced lesson describes the ultrastructure of an eukaryotic cell and describes the relationship between the structure and function of the organelles. The detailed and engaging PowerPoint and accompanying resources have been designed to cover point 2.1 (v) of the Edexcel A-level Biology B specification
As cells are the building blocks of living organisms, it makes sense that they would be heavily involved in all of the 10 topics in the Edexcel A-level B course and intricate planning has ensured that links are made to topic 1 and details are provided to link to the upcoming topics. A wide range of activities, that include exam-style questions, class discussion points and quick quiz competitions, will maintain motivation and engagement whilst covering the finer details of the following structures and organelles:
nucleus
nucleolus
ribosomes
rough endoplasmic reticulum
Golgi apparatus
lysosomes
smooth endoplasmic reticulum
mitochondria
cell surface membrane
centrioles
vacuole (+ tonoplast)
chloroplasts
cell wall
As mentioned above, all of the worksheets have been differentiated to support students of differing abilities whilst maintaining challenge
Due to the detail that is included in this lesson, it is estimated that it will take in excess of 3 hours of allocated A-level teaching time to cover the work
This fully-resourced lesson looks at the structure of genes and explores their role as a base sequence on DNA that codes for the amino acid sequence of a polypeptide. Both the PowerPoint and accompanying resource have been designed to cover the second part of point 4.1 of the AQA A-level Biology specification and has been written to specifically tie in with the previous lesson on DNA in prokaryotes and eukaryotes.
The lesson begins with a prior knowledge check as the students have to recognise the key term chromosome from a description involving DNA and histones. This allows genes, as sections of a chromosome, to be introduced and the first of a number of quiz rounds is then used to get the students to meet the term locus so that they can understand how each gene has a specific location on a chromosome. Whenever possible, opportunities are taken to make links to the other parts of the AQA specification and this is utilised here as students are reminded that alternative versions of a gene (alleles) can be found at the locus. Moving forwards, students will learn that 3 DNA bases is a triplet and that each triplet codes for a specific amino acid. At this point, the genetic code is introduced and students are challenged to explain how the code contains 64 different triplets. By comparing this number against the number of different amino acids in proteins, students will see how each amino acid is encoded for by more than one triplet and how this explains the degenerate nature of the genetic code. Again, an opportunity is taken to link to gene mutations. Finally, the students are told that most of the nuclear DNA in a eukaryote doesn’t code for a polypetptide and that even within a gene, there are coding and non-coding regions known as exons and introns respectively. The last section of the lesson uses a quiz round to check on all of the key terms which have been met in the two lessons on DNA, genes and chromosomes.
This is a fully-resourced REVISION lesson that uses a combination of exam questions, understanding checks, differentiated tasks and quiz competitions to enable students to assess their understanding of the content found within Topic 3.3 (Organisms exchange substances with their environment) of the AQA A-level Biology specification.
The sub-topics and specification points that are tested within the lesson include:
Surface area to volume ratio
Gas exchange
Digestion and absorption
Mass transport in animals
Mass transport in plants
Students will be engaged through the numerous quiz rounds whilst crucially being able to recognise those areas which require their further attention during general revision or during the lead up to the actual A-level terminal exams
This engaging lesson covers the detail of the 2nd part of specification point 6.2.2 of the AQA A-level Biology specification which states that students should be able to explain temporal and spatial summation as well as understand inhibition by inhibitory synapses. This is a topic which is generally poorly understood by students or brushed over so considerable time has been taken to design the activities to motivate the students so that the content is memorable whilst still being covered in detail. Links are continually made to earlier topics in this module such as synapses and generator potentials but also to topics covered in the previous year and still to be covered.
The lesson begins by challenging the students to recognise a description of generator potential and they will then discover that this is also known as an EPSP. Students will recall that a small depolarisation may not lead to the opening of the voltage gated channels and therefore the full depolarisation which is needed for the initiation of an action potential and will discuss how this problem could be overcome. Lots of discussion points like this are included in the lesson to encourage the students to challenge and debate why a particular process of mechanism occurs. Students will therefore learn that EPSPs can be combined and this is known as summation. A quiz round is used to introduce temporal and spatial summation. Moving forwards, students are presented with a number of examples where they have to decide why type of summation is involved. Again, the lesson has been written to include real-life examples such as chronic pain conditions so the chances of the content sticking is increased. The final part of the lesson introduces IPSPs and the effect of these on summation and action potentials is discussed.
This lesson has been designed for students studying on the AQA A-level Biology course and ties in well with the other uploaded lessons from topic 6 which include cholinergic synapses and neuromuscular junctions, sensory receptors and nerve impulses
