Biology Ib Hl Paper

2198 Words Aug 29th, 2013 9 Pages


Biology HigHer level PaPer 1 Tuesday 2 November 2010 (afternoon) 1 hour 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.


17 pages © International Baccalaureate Organization 2010

– 2 – 1.


[Question and image removed for copyright reasons]


What is the sequence of stages during the cell cycle? A. B. C. D. G1 mitosis G1 G1     S G1 G2 G2    G2 G2 S  mitosis  cytokinesis S

 cytokinesis   mitosis

 cytokinesis S

 mitosis 
…show more content…
Boys can inherit the condition from unaffected parents. Boys inherit the condition from their fathers only. Girls inherit the condition from their mothers only.

13. To produce artificial erythrocytes for use in blood transfusions, tobacco plants have been genetically modified to produce human hemoglobin. The first three triplets of the human hemoglobin gene are: ATG GTG CAT What would be the first three triplets of the hemoglobin gene inserted into the genome of the modified tobacco plants? A. B. C. D. TAC GTG GTA ATG GTG CAT TAC CAC GTA GCA ACA TGC


Turn over

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14. What is the energy transfer level from the kangaroo rat to the weasel shown in the food web below? bobcat roadrunner gopher snake opossum


quail deer mouse

meadow mouse kangaroo rat

chaparral plants A. B. C. D. Three times greater than the energy transfer from the roadrunner to the bobcat Half the energy transfer from chaparral plants to the meadow mouse A quarter of the energy transfer from the quail to the bobcat Approximately the same as the energy transfer from the meadow mouse to the opossum

15. Which of the following gases will contribute to the greenhouse effect? A. B. C. D. I. II. Oxygen Nitrous oxide

III. Argon I only II only I and II only I, II and III


– 9 – 16. Why has antibiotic resistance evolved in

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