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  • Biology Factsheet: 63. Pigments in plants

    Biology Factsheet: 63. Pigments in plants

    Pigments in plants have the following roles:  • the photosynthetic pigments trap solar energy and change it into chemical energy which enables the plant to fix carbon dioxide and  so ...

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  • Biology Factsheet: 64. Transpiration

    Biology Factsheet: 64. Transpiration

    Transpiration is the loss of water from the aerial parts of a plant. It aids transport of water and salts throughout the plant from the soil  to the leaves and helps to keep the leaves cool.&nbs...

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  • Biology Factsheet: 65. Conservation

    Biology Factsheet: 65. Conservation

    This Factsheet will explain the following topic areas which appear on modern A-level Biology syllabuses:  • the meaning of conservation, why it is needed and its importance.   • ...

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  • Biology Factsheet: 66. The physiology of exercise

    Biology Factsheet: 66. The physiology of exercise

    This factsheet summarises the aspects of exercise physiology that relate to skeletal muscles on current syllabuses. The student should  have a basic knowledge of the respiratory pathways, struct...

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  • Biology Factsheet: 67. Modern techniques in Biology: Genetics

    Biology Factsheet: 67. Modern techniques in Biology: Genetics

    The techniques and applications  of DNA finger printing and the polymerase chain reaction (PCR) are on most of the latest A-levelBiology syllabuses. This factsheet will describe these techniques ...

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  • Biology Factsheet: 68. Fieldwork techniques

    Biology Factsheet: 68. Fieldwork techniques

    By studying this factsheet the student should gain a knowledge of:  • the uses and limitations of sampling methods of plant populations, such as frame quadrats, point quadrats, line transec...

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  • Biology Factsheet: 69. Genetic engineering in agriculture

    Biology Factsheet: 69. Genetic engineering in agriculture

    By studying this Factsheet the student will gain a knowledge of the applications of genetic engineering in agriculture that are referred  to in current syllabuses. These include the production o...

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  • Biology Factsheet: 70. Microbes in the food and drink industry

    Biology Factsheet: 70. Microbes in the food and drink industry

    By studying this Factsheet the student will gain a knowledge of the uses of microorganisms in the food industry that are referred to in  current A-level biology syllabuses. These include the use...

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  • Biology Factsheet: 71. The control of bacteria

    Biology Factsheet: 71. The control of bacteria

    Most current A-level Biology syllabuses require candidates to study microbiology, biotechnology and health. Thus it is important for  candidates to understand the need for the control of microor...

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  • Biology Factsheet: 72. Sewage Treatment

    Biology Factsheet: 72. Sewage Treatment

    Sewage consists of domestic and industrial liquid wastes, including urine and faecal material. It consists of 99.9% water in which  soluble organic and inorganic compounds are dissolved and also...

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