Biology · 2004 · May · Paper 3 · HL · TZ2 · Question paper

BIOLOGY HIGHER LEVEL PAPER 3 Wednesday 12 May 2004 (morning) 1 hour 15 minutes M04/412/H(3) IB DIPLOMA PROGRAMME PROGRAMME DU DIPLÔME DU BI PROGRAMA DEL DIPLOMA DEL BI c 224-139 21 pages INSTRUCTIONS TO CANDIDATES y Write your candidate number in the box above. y Do not open this examination paper until instructed to do so. y Answer all of the questions from two of the Op tions in the spaces provided. You may continue your answers on answer sheets. Write your candidate number on each answer sheet, and attach them to this examination paper and your cover sheet using the tag provided. y At the end of the examination, indicate the letters of the Options answered in the candidate box on your cover sheet and indicate the number of answer sheets used in the appropriate box on your cover sheet. [Personal identifier removed] Option D – Evolution D1. A meteorite that struck near Mu rchison, Australia was analyzed for the presence of amino acids. Similar studies have been carried out on liquid samples taken from the Miller-Urey discharge experiment. The table below summarizes the resu lts from both sources. Each dot represents a relative amount of a particular amino acid, with one dot representing a small amount and eight dots representing a large amount. * * * * * ** * * * Sarcosine * * * * * ** * * * N-ethylglycine * * * * * ** * * * * *Aspartic Acid * * *Pipecolic Acid * ** * * * * *Proline * * * ** * * *Isovaline * * * * * ** * * * * *Norvaline * * * ** * * * * *Valine * * * ** * * * * * * *-aminoisobutyric Acidα * * * * * * * ** * * * * *-amino-N-butyric Acidα * * * * * * * ** * * * * * * *Alanine * * * * * * * ** * * * * * * *Glycine Miller-Urey ExperimentMurchison MeteoriteAmino Acid [Source: C Mitchell, Life in the Universe, (1995), W H Freeman, pages 46–47] [1](a) State the theory for which the Murchison meteorite provides evidence. ......................................................................... ......................................................................... [3] (b) Compare the amino acids found on the meteor ite with those produced in the Miller-Urey experiment. Refer to named examples.