General Certificate Of Education (Advanced Level) Grades

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General Certificate of Education (Advanced Level)Grades 12-13BIOLOGY SYLLABUS(Implemented from 2017)Department of ScienceNational Institute of EducationSri Lankawww.nie.lki

INTRODUCTIONBiology as theenvironment.scientific study of living organisms is essential for all individuals to co-exist successfullywith biotic and abioticStudy of Biology is important in a number of aspects;1. To have a broad view of concepts, principles and theories related to organisms2. To seek solutions and alternatives for the current issues faced by mankind such as HIV pandemic , cancers, reduced agriculturalproduction, environmental degradation etc3. To develop awareness to foster values related to nature and to conserve environment.The Biology syllabus for G.C.E. (A/L) has been developed with the intention of developing personal skills, interpersonal skills and thinking skills of thetarget student populations. This syllabus is in par with international syllabi of this subject at this level.Revision of the Biology syllabus has been done taking in to consideration the requirements of students who enter tertiary level education as well as themajority which follow other carrier paths. Apart from that, the enhanced knowledge of biological principles and their applications are beneficial in day today life pursuits and the needs of the society.ii

1.1 National goals1. Based on the concept of respecting human values and understanding the differences between the Sri Lankan multi-cultural society, building up thenation and confirming the identity of Sri Lanka by promoting national integrity, national unity, national coherence and peace.2. While responding to the challenges of the dynamic world, identifying and conserving the national heritage.3. Creating an environment which comprises the conventions of social justice and democratic life to promote the characteristics of respecting humanrights, being aware of the responsibilities, concerning each other with affectionate relationships.4. Promoting a sustainable life style based on the people’s mental and physical wellbeing and the concept of human values.5. Promoting positive feelings needed for a balanced personality with the qualities of creative skills, initiative, critical thinking and being responsible.6. Developing the human resources, needed for the progress of the wellbeing of an individual, the nation as well as the economic growth of Sri Lanka,through education.7. Preparing the people for the changes that occur in a rapidly changing world by adapting to it and controlling them; developing abilities andpotentialities of people to face the complex and unexpected occasions.8. Sustaining the skills and attitudes based on justice, equality, mutual respect which is essential to achieve a respectable place in the internationalcommunity.National Education Commission Report (2003).iii

1.2 Basic CompetenciesThe competencies promoted through the education mentioned below help to achieve the above mentioned National Goals.i. Competencies in CommunicationThis first set of competencies is made up of four subsets - Literacy, Numeracy, Graphics and Information Communication skills:Literacy :Listening, carefully speaking clearly, and reading for comprehension, writing clearly and accurately.Numeracy:Using numbers to count, calculate, code and to measure, matter, space and time.Graphics :Making sense of line and form, expressing and recording essential data, instructions and ideaswith line, form, colour, two and three-dimensional configurations, graphic symbols and icons.ICT Competencies:Knowledge on computers, and the ability to use the information communication skills atlearning or work as well as in private life.ii. Competencies relating to personality developmentGeneric skills such as creativity, divergent thinking, initiative, decision making, problem-solving, critical and analytical thinking, team work,inter-personal relationships, discovering and exploringValues such as integrity, tolerance and respect for human dignity.Cognitioniii. Competencies relating to the environmentThis is the second set of competencies related to the Social, Biological and Physical Environments.Social Environment:Biological Environment:Physical Environment:Awareness, sensitivity and skills linked to being a member of society, social relationship, personal conduct, general and legalconventions, rights, responsibilities, duties and obligations.Awareness, sensitivity and skills linked to the living world, man and the ecosystem, the trees, forests, seas, water, air and life- plant, animal and human life.Awareness, sensitivity and skills relating to space, energy, fuel, matter, materials and their links with human living, food,clothing, shelter, health, comfort, respiration, sleep, relaxation, rest, waste and excretion, media of communication andtransport.Included here are the skills in using tools to shape and for materials for living and learning.iv

iv.Competencies relating to preparation for the world of workEmployment related skills to maximize their potential and to enhance their capacity to contribute to economic development; to discover theirvocational interests and aptitudes; to choose a job that suits their abilities and to engage in a rewarding and sustainable livelihood.v.Competencies relating to religion and ethics·Develop competencies pertaining to managing environmental resources intelligently by understanding the potential of such resources.·Develop competencies related to the usage of scientific knowledge to lead a physically and mentally healthy life.·Develop competencies pertaining to becoming a successful individual who will contribute to the development of the nation incollaboration, engage in further studies and undertake challenging job prospects in the future.·Develop competencies related to understanding the scientific basis of the natural phenomena and the universe.·Use appropriate technology to maintain efficiency and effectiveness at an optimum level in utilizing energy and force.2.0 Aims of the syllabusAt the end of this course students will be able to;1.2.3.4.5.develop an interest and desire to expand and deepen the knowledge in the field of Biologyunderstand the concepts , phenomena, principals and processes in Biology through collaborative learning practicesadjudicate our place in nature ; understand our interactions and impact upon the natural and social environmentdevelop the ability to plan investigative processes and to solve problems in the field of Biology.develop a sense of belonging to the environment and identify the country’s natural habitats, together with a positive attitude towards fauna andflora, in order to foster responsibility and involvement in preserving and protecting nature and the quality of the environment.6. develop sensitivity to current practical problems of everyday life7. develop an awareness of good habits for maintaining hygiene, health and quality of lifev

List of topics and allocated number of periodsTopicUnit 01Unit 02Unit 03Unit 04Unit 05Unit 06Unit 07Unit 08Unit 09Unit 10Number of periodsIntroduction to BiologyChemical & cellular basis of lifeEvolution and diversity of organismsPlant form and functionAnimal form and functionGeneticsMolecular Biology & Recombinant DNA TechnologyEnvironmental BiologyMicrobiologyApplied BiologyTotalvi058561771932242415024600

GradeTermFirst TermCompetency LevelsFrom 1.1.1 to 3.2.3(16 Competency Levels)Grade 12 Second Term From 3.2.4 to 4.5.1(17 Competency Levels)Third TermFrom 5.1.1 to 5.5.3(12 Competency Levels)First TermFrom 5.6.1 to 6.1.5(23 Competency Levels)From 7.1.1 to 8.5.1(14 Competency Levels)Grade 13 Second TermThird TermFrom 9.1.1 to 10.1.5 (12 Competency Levels)vii

Unit 1 –Introduction to BiologyCompetency1.0 Conductsinvestigationsfrom a biologicalperspective.( 05 periods)Competency level1.1.1 Elaborates on the nature,scope and importance ofbiology with reference tochallenges faced by themankind1.1.2 Reviews the nature and theorganizational patterns of theliving worldContent Scope and importance of biology Issues pertaining to biology Understanding biological diversity Understanding the human body and itsfunctions Understanding plant life Management of natural resources andenvironment Sustainable food production Understanding of diseases and causes Addressing some legal and ethicalissues of organisms – size, shape, form, Diversityhabitat Characteristics of organisms Order and organization Metabolism Growth and development Irritability and coordination Adaptation Reproduction Heredity and evolution1Learning outcomesNumber ofperiods describe the nature, scope andimportance of biology discuss the issues andchallenges faced by mankindwith referenceto biology discuss how challenges areovercome using newtechnologies appreciate the study of biologyas a multidisciplinary subject02 discuss the wide range in shapes,sizes , forms and habitats of livingorganisms elaborate characteristics of livingorganisms construct the hierarchical levels oforganization with suitableexamples justify the cell as the basicstructural and functional unit oflife03

Hierarchical levels of organization of livingthings Molecules Organelles Cells Tissues Organs Organ systems Organism Population Community Ecosystem Biosphere Cell as the basic structural and functionalunit of life2 appreciate all kinds of livingorganisms and their interactions03

Unit 2 – Chemical & cellular basis of lifeCompetency2.1.0 Investigatesthe chemicalbasis of life.Competency level2.1.1 Inquires into theelementalcomposition ofliving organims2.1.2 Investigates the physicaland chemical propertiesof water important forlife( 85 Periods)ContentLearning outcomes Elemental composition of living matter list Importance of water for life Importance of physical and chemical properties of waterfor lifethe elements present inorganisms. state the most abundant elementsin organisms 2.1.3 Examines thechemical nature andfunctions of mainorganic compounds oforganisms Structure and function of thefour main types of organiccompounds found inorganisms; Carbohydrates,lipids , proteins, and nucleicacids3 describe physical and chemicalproperties of water which areimportant for life.relate the physical and chemicalproperties of water to itsfunctions performed in livingsystemsexplain the importance of waterfor life.appreciate the unique propertiesof water for existence of lifedescribe the basic chemical natureof four main types of organiccompounds found in organismselaborate on the functions of esNumber ofperiods020409

Carbohydrates Monosaccharides,disaccharides andpolysaccharides Functions of carbohydrates Lipids Fats and oils, phospholipidsandother lipids Functions of lipids Proteins Amino acids and peptidebonds. Primary, secondary, tertiaryand quaternary structures ofproteins Properties ofproteins Functions of proteins Nucleic acids Nucleosides,nucleotides andpolynucleotides along withappropriate examples Ribonucleotides anddeoxyribonucleotides Structure of DNA-doublehelical structure Main functions of DNA4 identify structure and functionsof DNA and RNAdifferentiate DNA and RNAexplain the role of DNA andRNA as hereditary materialstate functions of ATP,NAD,FAD and NADPconduct laboratory tests toidentify the reducing sugars, nonreducing sugars, starch, proteinsand lipids.appreciate that protein,carbohydrates , lipids and nucleicacids form the chemical basis oflifeappreciate the unique propertiesof DNA which are important toact as the hereditary material ofall organisms

Structure of RNA and mainfunctions Nucleotides found in other molecules(ATP,NAD,NADP,FAD) and theirmajor role Simple laboratory tests for the2.2.0 Examines cellas the basicfunctioning unitof life2.2.1Elaborates on thecontribution ofmicroscopes to theexpansion of knowledgeon cells and cellularorganization. identification of reducing and nonreducing sugars, starch, proteins andlipidsMicroscopes as tools in biologyProperties of microscopes Magnification Resolution powerTypes of microscopes Light microscope Electron microscope SEM TEMParts and functions of lightmicroscope and using microscopeto observe specimens 5compare significant features ofthe electron microscope and lightmicroscopeexplain magnification andresolutionexplain main features oftransmission and scanningelectron microscopesidentify cellular and sub cellularcomponenets using lightmicroscope and electronmicrographsdevelop the skill for handlinglight microscope efficientlyuse the light microscope properlyto observe specimensvalue the contribution ofmicroscope in biological studies07

2.2.2 D e sc r i b e s t heh i st o r i c alb a c kgr o u n d o f ce l la n d a nalyses the structureand functions of the subcellular units. Historical background of cellCell theoryOrganization of cells Prokaryotic Eukaryotic . Structure of a typical plant cell and ananimal cell Structure and functions oforganelles and sub cellularcomponents Plasma membrane Cytoplasm Nucleus Ribosomes Endoplasmic reticulum (Rough andSmooth) Golgi bodies Lysosomes Peroxisomes and glyoxysomes Mitochondria Chloroplasts Cytoskeleton (microfilaments,microtubules and intermediatefilaments) Vacuoles Flagella and cilia6 describe the contribution of scientists towards cell theoryexplain the cell theoryexplain the difference betweeneukaryotic and prokaryotic cellscompare the structural differencesbetween plant and animal cells.describe the structure and functionof organelles and sub cellularcomponents of cells.describe extra cellularcomponentsexplain the need and significanceof cellular communicationsstate components of cellcommunicationuse electron micrographs toidentify cellular organelles andsub cellular components of a celluse electron micrographs todifferentiate eukaryotic andprokaryotic cellular organizationappreciate division of labour andcompartmentalization within acell18

Centriole Extra cellular components Cell wall Cell junctions Extracellular matrix of animal cells Need and significance of cellcommunication Components involved in cellcommunication Receptors located on cell membranesor intracellular receptors Response Use of electron micrographs tounderstand the structure of cellularcomponents2.3.0 Investigates theimportance ofcell cycle andcell division.2.3.1 Describe the cell cycle andthe process of cell division Cell cycle Chromosomes Mitosis Behaviour of chromosomes and otherparts of a cell during mitosis Significance of mitosis. Meiosis Behaviour of chromosomes and otherparts of a cell during meiosis Significance of meiosis Galls, tumours and cancers7 elaborate on the phases and mainevents of cell cycle. describe the basic structure ofeukaryotic chromosome discuss the main events that occurin each phase. describe the stages in mitosis andmeiosis withreference tochromosomal behavior describe the significance ofsynaptonemalcomplexandkinetochore09

Identification of different stages ofmitosis and meiosis usingmicroscopic slides 2.4.0 Investigatesenergyrelationships inmetabolicprocesses oforganisms.2.4.1Analyses the energyrelationships inmetabolicprocesses. Metabolism Need of energy for living systems. Anabolic and catabolic reactions,structure of ATPImportance ofATP as an energycarrier8 compare and contrasts mitosisand meiosisstate the significance of mitosisand meiosisuse prepared slides to identifydifferent stages of mitosis andmeiosis under light microscope.state rapid and uncontrolledmitotic cell division results information of galls, tumors andcancersexplain metabolism highlight the need of energy forliving systems explain catabolic and anabolicreactions with examples discuss the structure and theimportance of ATP as anuniversal energy currency unit listthe cellular processesinvolving energy appreciate the role of ATP as anuniversal energy currency02

2.4.2 Investigates the role ofenzymes in regulatingmetabolic reactions. Enzymes General characteristics of enzymes Mechanism of enzymatic reaction Induced fit mechanism Cofactors Co enzymes Inorganic ions define enzymes explain the general characteristics Factors affecting enzymatic reactions pH Temperature Substrate concentration Enzyme concentration 2.4.3 Examinesphotosynthesis as an of enzymes and their roledescribe the importance of cofactors for enzymatic activitiesdescribe the mechanism of enzymeactivity by using suitablediagramsexplain how pH, temperature,substrate concentration, enzymeconcentration andinhibitors(competitiveandnoncompetitive) affect the rate ofenzyme activityconduct laboratory experiments toshow how temperature affects therate of enzyme reaction usingstarch – amylase systemappreciate the role of enzymesin metabolic reactionsInhibitors-competitive, noncompetitiveLaboratory experiment todemonstrate enzyme activity andto determine effect of temperature onrate of enzymatic reaction (starchamylase) Importance of photosynthesis define photosynthesis discuss the global and biological91012

energy fixingmechanism. Pigments and photosystems Light dependent reaction ofphotosynthesis Photolysis of water Synthesis of NADPH andATP Calvin cycle (C3 pathway) Capturing energy from sunlight Carboxylation – function ofRUBP carboxylase. Reduction –Reduction of PGAand synthesis ofcarbohydrates. Regeneration of RUBP Photorespiration in C3 plants C4pathway of photosynthesis Significance of C4 pathway Anatomical differences between C3and C4 plant leavesBlackman’s principle of factorsaffecting photosysnthesisLimiting factors affecting photosynthesis Carbon dioxide Light10 importance of photosynthesisdifferentiate the role of pigmentsinvolved in photosynthesisdescribethenatureandsignificance of photosystemsdescribe the light dependentreaction of photosynthesisdescribe the Calvin cycle ofphotosynthesisdescribe the C4 pathway n of C3 plantsexplain C4 pathway has evolvedto minimize photorespirationdifferentiate C3 and C4 plantscorrelate limiting factors ofphotosynthesiswiththeproductivity/efficiency of plantsindifferentenvironmentalconditionsdesign and carryout experimentsto determine the rate ofphotosynthesis by amount ofoxygen releaseddiscuss the effect of globalwarming on photosynthesis

2.4.4Examines cellularrespiration as a process ofobtaining energyTemperature appreciate the universal role ofphotosynthesisDetermination of rate ofphotosynthesis by amount ofO2 released using Audusapparatus (at different CO2concentrations and lightintensities)Microscopic observation of a crosssections of C3 and C4 leaves withspecial reference to adaptations forphotosynthesis. Cellular respiration Importance of cellular respiration Aerobic and anaerobic processes Aerobic respiration- process ofglucose oxidation Glycolysis Pyruate oxidation and Citric acidcycle (Kreb s cycle) Electron transport chain Anaerobic respiration Ethanol fermentation and Lactic acidfermentation Use of lipids (fats and oils) andproteins in respiration11 define cellular respiration highlight cellular respiration asthe process of supplying energyfor all cellular activities. describe the location, majorevents and end products ofaerobic respiration. describe the location, majorevents and end products ofanaerobic respiration differentiateaerobicandanaerobic respiration calculate efficiency of anaerobicand aerobic respiration list out the significance of cellularrespiration.12

Respiratory quotient Determination of rate of respirationand respiratory quotient usinggerminating seeds12 relatethesubstratewithrespiratory quotient determine the rate of respirationand respiratory quotient usinggerminating seeds appreciate the significance ofrespiration for all organisms

Unit 3 –Evolution and diversity of organismsCompetency

Competency Competency level Content Learning outcomes Number of periods 1.0 Conducts investigations from a biological perspective. 1.1.1 Elaborates on the nature, scope and importance of biology with reference to challenges faced by the mankind Scope and importance of biology importance of biolo

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