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Origin of life.Exactly how, where, and when did life on Earth originate? Which, if any, of the many hypotheses is correct? What were the metabolic pathways used by the earliest life forms?
Triple Award Science, commonly referred to as Triple Science, results in three separate GCSEs in Biology, Chemistry and Physics and provide the broadest coverage of the main three science subjects. The qualifications are offered by the five main awarding bodies in England; AQA , Edexcel , OCR , CIE and Eduqas .
Science (Physics, Biology) — Yes — link: CIE 5126 Science (Chemistry, Biology) — Yes — link: CIE 5129 Combined Science: Yes Yes Yes Cannot be combined with syllabuses 0608, 0610, 0620, 0625, 0652, 0653 & 0654 , 5054, 5070, 5090, 5096 & 5131 (O Level) link: CIE 5130 Additional Combined Science: No Yes Yes last exam in 2007 link: CIE 5131 ...
For GCSE Science the old single-award ‘science’ and ‘additional science’ options are no longer available, being replaced with a double award ‘combined science’ option (graded on the scale 9–9 to 1–1 and equivalent to 2 GCSEs). Alternatively pupils can take separate qualifications in chemistry, biology and physics.
In 1994, the Oxford Schools Examinations Board sold its GCSE functions to the Associated Examining Board [17] (OSEB's A Level functions went to UCLES). [2] NEAB, the AEB and the vocational City & Guilds formed the Assessment and Qualifications Alliance (AQA) in 1997, [ 18 ] with the AEB and NEAB formally merging into AQA in 2000 (City & Guilds ...
In biology, translation is the process in living cells in which proteins are produced using RNA molecules as templates. The generated protein is a sequence of amino acids. This sequence is determined by the sequence of nucleotides in the RNA. The nucleotides are considered three at a time.
The mechanisms of Mg 2+ transport by the remaining proteins are beginning to be uncovered with the first three-dimensional structure of a Mg 2+ transport complex being solved in 2004. [ 76 ] The hydration shell of the Mg 2+ ion has a very tightly bound inner shell of six water molecules and a relatively tightly bound second shell containing 12 ...
Correns accused de Vries of appropriating terminology from Mendel's paper without crediting him or recognising his priority. At the same time another botanist, Erich von Tschermak was experimenting with pea breeding and producing results like Mendel's. He too discovered Mendel's paper while searching the literature for relevant work.