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WJEC Eduqas GCE AS Level Unit 1 (from 2015 onwards)

Summary Presentation of all the elements of Component 1 - this is hosted by me but edited completely by my students using resources they have found, sourced or in a couple of cases written.

WJEC AS Biology Unit 1 on Prezi


1.1 Biological Molecules

A biomolecule is any molecule that is produced by a living organism, including large macromolecules such as proteins, polysaccharides, lipids, and nucleic acids
1-1a_water_pictures.ppt
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1-1b_biological_compounds.ppsx
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1-1c_proteins_1.ppsx
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A representation of the 3D structure of myoglobin, showing alpha helices, represented by ribbons. This protein was the first to have its structure solved by X-ray crystallography by Max Perutz and Sir John Cowdery Kendrew in 1958, for which they received a Nobel Prize in Chemistry.

1.2 Cell Structure

The cell is the basic structural and functional unit of all known living organisms. It is the smallest unit of life that is classified as a living thing
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1-2_cell_structure_and_organisation.ppsx
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A brilliant introduction to cells from Molecular Expressions

1.3 Membranes

A biological membrane is an enclosing membrane that acts as a selective barrier, within or around a cell. It consists of a lipid bilayer with embedded proteins
1-3_membranes.ppsx
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Fluid Mosaic worksheet below is from BiologyMad:
fluidmosaicmodelws.pdf
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A Cell Membrane Tutorial from The Biology Project (Arizona University)

A comparison of Active/Passive transport from Access Excellence


1.4 Enzymes

Enzymes are large biological molecules (proteins) that are responsible for catalysing the thousands of chemical inter-conversions that sustain life
1-4_enzymes.ppsx
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The Inhibitors powerpoints below are those supplied by WJEC themselves from their website
1-4b_inhibitors_graphs.pptx
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1-4b_inhibitors_guide_to_ppt.pdf
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Human glyoxalse (taken from wikipedia)

1.5 Industrial Use of Enzymes

Enzymes (above) are used in the chemical industry and other industrial applications when extremely specific catalysts are required.
1-5_industrial_enzymes.ppsx
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1-5b_immobilised_enzymes.pptx
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1.6 Nucleic Acids

Nucleic acids are large biological molecules essential for all known forms of life. They include DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
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DNA image from wikimedia commons
1-6_nucleic_acids.ppsx
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1.7 Cell Division

Mitosis is the process by which a eukaryotic cell separates the chromosomes in its cell nucleus into two identical sets, in two separate nuclei. It is generally followed immediately by cytokinesis, which divides the cell contents into two cells containing roughly equal shares of the cellular components
1-7_cell_divison_-_mitosis.ppsx
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mitosis_wordsearch.doc
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