GCE 'O' Level Biology Theme 1
- 31 mins on-demand video
- 1 downloadable resource
- Full lifetime access
- Access on mobile and TV
- Certificate of Completion
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- demonstrate knowledge and understanding in relation to scientific phenomena, facts, laws, definitions, concepts, theories;
- scientific instruments and apparatus, including techniques of operation and aspects of safety;
- scientific quantities and their determination;
- scientific and technological applications with their social, economic and environmental implications.
- scientific vocabulary, terminology, conventions (including symbols, quantities and units contained in ‘Signs, Symbols and Systematics 16–19’, Association for Science Education, 2000 and the recommendations on terms, units and symbols in ‘Biological Nomenclature 4th Edition (2009)’ published by the Institute of Biology, in conjunction with the Association for Science Education);
- No material or software is required
This course is designed to provide studies of experimental and practical Biology, a worthwhile educational experience for all students, whether or not they go on to study science beyond this level and, in particular, to enable them to acquire sufficient understanding and knowledge to be suitably prepared for studies beyond Ordinary Level in Biology. Each course consists of one theme of biology that will be further split into simpler topics for easier understanding. This course is designed to stimulate students, create and sustain their interest in Biology, and understand its relevance to society.
Candidates will be assumed to have knowledge and understanding of 'O' level Biology, as a single subject or as part of a balanced science course
- Students who are taking O Levels Biology (SPA)
- identify cell structures (including organelles) of typical plant and animal cells from diagrams, photomicrographs and as seen under the light microscope using prepared slides and fresh material treated with an appropriate temporary staining technique: chloroplasts, cell surface membrane, cell wall, cytoplasm, cell vacuoles, nucleus
- identify the following membrane systems and organelles from diagrams and electron micrographs: endoplasmic reticulum, mitochondria, Golgi body, ribosomes
- state the functions of the membrane systems and organelles identified above
- compare the structure of typical animal and plant cells
- define diffusion and describe its role in nutrient uptake and gaseous exchange in plants and humans
- define osmosis and describe the effects of osmosis on plant and animal tissues
- define active transport and discuss its importance as an energy-consuming process by which substances are transported against a concentration gradient, as in ion uptake by root hairs and uptake of glucose by cells in the villi
- state the roles of water in living organisms
- list the chemical elements which make up carbohydrates, fats, proteins
- describe and carry out tests for starch (iodine in potassium iodide solution), reducing sugars (Benedict's solution), protein (biuret test), fats (ethanol emulsion)
- state that large molecules are synthesised from smaller basic units: glycogen from glucose, polypeptides and proteins from amino acids, lipids such as fats from glycerol and fatty acids
- Explain enzyme action in terms of the 'lock and key' hypothesis.
- Explain the mode of action of enzymes in terms of an active site, enzyme-substrate complex, lowering of activation energy and enzyme specificity.
- Investigate and explain the effects of temperature and pH on the rate of enzyme catalyzed reactions.