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A level Biological Molecules practise OCR ExamBuilder

Biology A. A level Biological Molecules practise Amy Vickers Please note that you may see slight differences between this paper and the original. Duration: Not set Candidates answer on the Question paper. OCR supplied materials: Additional resources may be supplied with this paper. Other materials required: Pencil Ruler (cm/mm). INSTRUCTIONS TO CANDIDATES. Write your name, centre number and candidate number in the boxes above. Please write clearly and in capital letters. Use black ink. HB pencil may be used for graphs and diagrams only. Answer all the questions, unless your teacher tells you otherwise. Read each question carefully. Make sure you know what you have to do before starting your answer.

Protein structure can be represented at four levels: primary, secondary, tertiary and quaternary. Below is a set of features that may be used when describing the structure of a protein such as haemoglobin. Features Letter hydrogen bonds A peptide bonds B α and β subunits C the sequence of amino acids D the initial folding of the polypeptide ...

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revise4science.weebly.com

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