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<\/a><\/p>\n(i) An enzyme is a protein and has a primary structure.
\nExplain the meaning of the term primary structure.
\n(ii) Using the diagram and your own knowledge of enzymes, explain the importance of the primary structure of an enzyme to its function.<\/p>\n
(b) Describe the roles of messenger RNA (mRNA) and transfer RNA (tRNA) in protein synthesis.
\n(i) Messenger RNA
\n(ii) Transfer RNA<\/p>\n
\/\/ <\/p>\n
Answers<\/a><\/p>\n 1. idea that primary structure determines Edexcel GCE 2 Read through the following passage on protein synthesis, then write on the dotted The following questions have been selected to test and consolidate your learning in this area of the CfE Higher syllabus. They will also help you understand the style of question you may encounter in your final exam. The answers for each question can be accessed by clicking to reveal. At the bottom of the section … Continue reading Protein Synthesis Rev<\/span>
\n2. joined by peptide bonds ;
\n(ii). 1. idea that primary structure determines (three-dimensional) folding or equivalent;
\n2. reference to types of amino acids determine {types of bonds \/ (other than peptide bonds)
\n\/ named bond};
\n3. reference to position of amino acids determines position of{bonds \/ correctly named bond} ;
\n5. idea that {shape \/ position \/ eq} of active siteis determined by position of amino acids ;
\n6. reference to shape of active site being correct to bind to substrate ;b) .
\n<\/a> <\/a>.<\/p>\n<\/div>\n
\n(three-dimensional) folding \/ eq ;<\/p>\n
\nBiology
\nAdvanced Subsidiary
\nUnit 1: Lifestyle, Transport, Genes and Health
\nTuesday 12 January 2010 \u2013 Morning
\nTime: 1 hour 30 minutes
\nYou do not need any other materials.
\n6BI01\/01<\/p>\n
\nlines the most appropriate word or words to complete the passage.
\n(6)
\nProtein synthesis involves two stages. The first stage is ……………………………………………………….. and
\ntakes place in the nucleus of the cell. During this stage, a molecule called
\n……………………………………………………….. is made using the antisense DNA strand as a template.
\nThe second stage, known as ……………………………………………………….. , takes place in the cytoplasm of
\nthe cell on structures called ……………………………………………………….. . During this stage,
\n……………………………………………………….. molecules enable the amino acids attached to them to line
\nup in the correct order. The amino acids are joined together by the formation of
\n……………………………………………………….. bonds.
\n……………………………………………………………………………………………………………….<\/p>\n","protected":false},"excerpt":{"rendered":"