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International Baccalaureate: Biology

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  1. Genetically Modified Organisms Essay

    With the world?s population expected to reach 9 billion by 2050 demand for critical resources such as proteins continue to exceed supplies. Scientists are close to developing and engineering a genetically modified salmon. Genetically Modified organisms (GM or genetically modified organisms) are organisms or plants with altered DNA, giving them greater resistance to pesticides and herbicides and improved nutritional content. GM foods were originally intended to reduce the diseases and pesticides on crops, leading to a larger output of crops for a cheaper price.

    • Word count: 2042
  2. Investigating the Effects of Salt on Seed Germination

    The dependent variable (the variable being measured): The dependent variable is going to be the percentage of seeds that germinate over one week in each petri dish/NaCl solution. We will count the total number of seeds in each petri dish and after one week; count the number of seeds that germinated so that we can calculate a percentage. The control variables (the variables kept the same): The other variables, which we need to keep constant, are: * The same number of seeds used for each petri dish (10 seeds).

    • Word count: 2728
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IB Biology is the study of living organisms. The four basic concepts which run through the course are: evolution, equilibrium within systems, universality versus diversity, and structure and function. These concepts give the student a strong foundation upon which other detailed knowledge can be built. You will also be completing a significant amount of practical work and an experimental approach is strongly emphasised.

Assessment is both externally and internally organised. The external examinations are a mixture of multiple-choice, short answer and extended answer tests.The extended answer examinations require you express yourself in a concise and scientific manner and some great examples of these IB Biology essays can be found on Marked by Teachers. Science can bring enormous benefits to societies and you will be encouraged to become a responsible and ethically minded scientist.

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