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TEMASEK POLYTECHNIC SCHOOL OF APPLIED SCIENCE AY 201^2013 MAIN EXAMINATION (April Semester) BIOMOLECULES (ABT1002) SUBJECT LEVEL: 1 TIME ALLOWED : 2 HOURS INSTRUCTIONS TO CANDIDATES 1. This paper consists of 4 pages (excluding cover page). 2. It is divided into Sections A, B and C. Section A contains 10 multiple choice questions, each worth 2 marks. Section B contains 4 short questions, each worth 10 marks. Section C contains 2 long questions, each worth 20 marks. 3. You are advised to spend no more than 20 minutes on Section A; no more than 50 minutes on Section B; and no more than 50 minutes on Section C. 4. Follow the rules set out on the cover of your answer booklet. 5. Writeyour matriculationcard number clearly on the cover page ofyour answer booklet and your OMR form. 6. Answer ALL questions in Sections A, B and C. 7. Write your answers for Section A on the OMR form provided. 8. Write your answers for Sections B and C in the answer booklet provided, with the Question number clearly shown. Start the answer to a new question on a new page. You may answer the sub-parts of the same question on the same page.
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SECTION A (20 MARKS) Answer ALL the questions. Al. Which of the following statements is TRUE? (a) A hydrocarbon contains only carbon and hydrogen atoms. (b) An atom contains protons in the outershell. (c) Helium, Neon and Argon are not very reactive because they all have 8 electrons in their outershells. (d) The number of valence electrons in an atom is equivalent to the number of electrons in that atom. A2. Hydrogen bonds are . (a) formed through sharing of electrons (b) a type of hydrophobic interaction (c) formed between hydrogen atoms (d) a type of intermolecular interaction A3. Which of the following statements is FALSE?
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