BioHL P1 M03 - c 1 hour IB DIPLOMA PROGRAMME PROGRAMME DU...

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BIOLOGY HIGHER LEVEL PAPER 1 Wednesday 7 May 2003 (afternoon) 1 hour M03/410/H(1)+ IB DIPLOMA PROGRAMME PROGRAMME DU DIPLÔME DU BI PROGRAMA DEL DIPLOMA DEL BI c 223-134 15 pages INSTRUCTIONS TO CANDIDATES y Do not open this examination paper until instructed to do so. y Answer all the questions. y For each question, choose the answer you consider to be the best and indicate your choice on the answer sheet provided.
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1. What is/are the advantage(s) of using an electron microscope? I. Very high resolution II. Very high magnification III. The possibility of examining living material A. I only B. I and II only C. II and III only D. I, II and III 2. Which structural feature(s) is/are characteristic of viruses? I. DNA or RNA II. A protein coat III. Ribosomes A. I only B. I and II only C. II and III only D. I, II and III 3. What is essential for diffusion? A. A concentration gradient B. A selectively permeable membrane C. A source of energy D. A protein – 2 – M03/410/H(1)+ 223-134
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4. Which of the following reactions occurs when a dipeptide is formed from amino acids? A. Hydrolysis B. Denaturation C. Condensation D. Oxidation 5. In the diagram below macromolecules are being transported to the exterior of a cell. What is the name of this process? A. Exocytosis B. Pinocytosis C. Endocytosis D. Phagocytosis 6. Which statement best describes a role of mitosis? A. It increases genetic variation. B. It facilitates growth of unicellular organisms. C. It facilitates reproduction of some unicellular organisms. D. It repairs damaged cells. – 3 – M03/410/H(1)+ 223-134 Turn over Plasma membrane
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7. What molecule does the following diagram represent? CH 3 (CH 2 ) n O OH C A. An amino acid B. A fatty acid C. A phospholipid D. A monosaccharide 8. What is the function of helicase? A. It forms bonds between DNA nucleotides. B. It adds new nucleotides to the DNA helix. C. It forms the DNA helix. D. It separates DNA strands. 9. What is true about eukaryotic DNA? A. It contains the complementary base pair adenine-uracil. B. It is naked. C. The majority consists of repetitive sequences. D. The majority codes for genes.
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This note was uploaded on 03/05/2010 for the course IB IB taught by Professor Unknown during the Spring '10 term at École Normale Supérieure.

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BioHL P1 M03 - c 1 hour IB DIPLOMA PROGRAMME PROGRAMME DU...

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