Pearson Edexcel Level 3 GCE,. Biology A (Salters Nuffield) Advanced PAPER 2: Energy, Exercise and Coordination. Graded A+ Masterpiece.

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Answer ALL questions. Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross . 1 All ... known organisms can be placed into one of the three domains of life. The table shows some information about the three different domains. Feature Archaea Bacteria Eukaryota DNA is circular Yes Yes No DNA is single-stranded No .................................. No Growth inhibited by the antibiotic streptomycin No Yes No Name of the link between fatty acids and glycerol in lipids Ether Ester Ester Presence of cell wall Some Yes .................................. Methionine required for starting protein synthesis Yes No Yes Transcription factors required for transcription Yes No Yes (a) Complete the table to show the features in Bacteria and in Eukaryota. (2)*P65460A0336* Turn over 3 (b) Explain how the information in the table can be used to show that the Archaea are more closely related to the Eukaryota than to the Bacteria. (3 [Show More]

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