Biology SL Paper 1



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  8813-600414 pages N13/4/BIOLO/SPM/ENG/TZ0/XXWednesday 13 November 2013 (afternoon) BIOLOGYSTANDARD LEVELPAPER 1 INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so • Answer all the questions • For each question, choose the answer you consider to be the best and indicate your choice on the answer sheet provided •    The maximum mark for this examination paper is [30 marks] 45 minutes ©   International Baccalaureate Organization 2013 88136004  8813-6004  – 2 –   N13/4/BIOLO/SPM/ENG/TZ0/XX 1  The bar chart shows the mean length (in cm) of two lizard species The error bars represent the standard deviation What can be understood from the bar chart?Mean length / cm121086420 Group 1 Group 2Lizard groups A Group 1 lizards are longer than all group 2 lizards B Group 2 lizards are longer than all group 1 lizards C Group 2 has same mean as group 1 D Group 2 lizards can be longer than group 1 lizards 2  What identies the structure and function of agella and pili? Flagella PiliStructure Function Structure Function Acorkscrew shapecan pull cells togetherhair like shapeused for locomotionBhair like shapecan pull cells togethercorkscrew shapeused for locomotionCcorkscrew shapeused for locomotionhair like shapecan pull cells together Dhair like shapeused for locomotioncorkscrew shapecan pull cells together  3  Which property of cells is evidence for the cell theory? A Cells have proteins B Cells can divide C Cells have nucleic acids D Cells can move around  8813-6004  – 3 –  Turn over  N13/4/BIOLO/SPM/ENG/TZ0/XX 4  What identies plant cells and animal cells? Plant cell Animal cell Acell wall and plasma membrane; may contain starchno cell wall only plasma membrane; may contain glycogenBno cell wall only plasma membrane; may contain starchcell wall and plasma membrane; may contain glycogenCcell wall and plasma membrane; may contain glycogenno cell wall only plasma membrane; may contain starchDno cell wall only plasma membrane; may contain glycogencell wall and plasma membrane; may contain starch 5  Which is the sequence of events in mitosis? A metaphase, anaphase, telophase, prophase B anaphase, prophase, telophase, metaphase C telophase, prophase, metaphase, anaphase D prophase, metaphase, anaphase, telophase 6  Which are functions of membrane proteins? A Hormone binding sites and DNA replication B Cell adhesion and translation C Cell to cell communication and protein pumps D Passive transport and glycolysis







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