Topic 2 - Molecular Biology (1) - Topic 2 Molecular Biology Soniya Nahata IB Biology(SL 2.1 Molecules to metabolism Essential Idea Living organisms

Topic 2 - Molecular Biology (1) - Topic 2 Molecular Biology...

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06/09/15’ Topic’2:’Molecular’Biology ’ Soniya’Nahata ’ IB’Biology’(SL) ’ 1 2.1 Molecules to metabolism: Essential Idea: Living’organisms’control’their’composition’by’a’complex’web’of’ chemical’reactions.’ ’ Understandings: U1. Molecular’biology’explains’living’processes’in’terms’of’the’chemical’ substances’involved: ’ U2. Carbon’atoms’can’ form’four’covalent’bonds’allowing’a’diversity’of’ stable’compounds’to’exist: ’ U3. Life’is’based’in’carbon’compounds’including’carbohydrates,’proteins,’ lipids’and’nucleic’acids: ’ U4. Metabolism’is’a’web’of’all’enzyme -catalysed’reactions’in’a’cell’or’ organism:’ U5. Anabolism’is’the’synthesis’of’complex’molecules’from’simpler’molecules’ including’the’formation’of’macromolecules’from’mon omers’by’ condensation’reactions: ’ U6. Catabolism’is’the’breakdown’of’complex’molecules’into’simpler’ molecules’including’the’hydrolysis’ of’macromolec ules’into’monomers: ’ Applications: A1. Urea’as’an’example’of’a’compound’that’is’produced’by’living’organisms’ but’can’also’be’artificially’synthesised: Skills: S1. Drawing’molecular’diagrams’of’glucose,’ribose,’a’saturated’fatty’acid’ad’ a’generalised’amino’acid: ’ S2. Identification’of ’ biochemicals’such’as’sugars,’lipids’or’amino’acids’from’ molecular’diagrams. ’

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