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α-Amylase is an enzyme (EC 3.2.1.1; systematic name 4-α-D-glucan glucanohydrolase) that hydrolyses α bonds of large, α-linked polysaccharides, such as starch and glycogen, yielding shorter chains thereof, dextrins, and maltose, through the following biochemical process: [2]
In molecular biology, the presence of amylase can serve as an additional method of selecting for successful integration of a reporter construct in addition to antibiotic resistance. As reporter genes are flanked by homologous regions of the structural gene for amylase, successful integration will disrupt the amylase gene and prevent starch ...
β-Amylase (EC 3.2.1.2, saccharogen amylase, glycogenase) is an enzyme with the systematic name 4-α-D-glucan maltohydrolase. [ 2 ] [ 3 ] [ 4 ] It catalyses the following reaction: Hydrolysis of (1→4)-α- D -glucosidic linkages in polysaccharides so as to remove successive maltose units from the non-reducing ends of the chains
In one incident concerning the 2016 GCSE biology exam, there were complaints about the apparent lack of biology content in the exam. [65] [66] [67] One of the questions in the biology exam asked students to define an "independent company", which some students perceived to be a business studies question. [68]
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 .
β-amylase catalyses the hydrolysis of starch into maltose by the process of removing successive maltose units from the non-reducing ends of the chains. γ-Amylase will cleave the last α(1–4)glycosidic linkages at the nonreducing end of amylose and amylopectin , yielding glucose.
In Bangladesh, the International GCSE (IGCSE) qualification is offered, which is colloquially known as O-Levels, with examinations conducted by Cambridge Assessment International Examinations (CAIE) and Pearson Edexcel both under the board of British Council. Both Pearson Edexcel and CAIE offer International GCSE qualifications.
Amylase, produced by the salivary glands, breaks complex carbohydrates, mainly cooked starch, to smaller chains, or even simple sugars. It is sometimes referred to as ptyalin . Lysozyme : Considering that food contains more than just essential nutrients, e.g. bacteria or viruses, the lysozyme offers a limited and non-specific, yet beneficial ...