Copy of Biological Buffers Investigation

Copy of Biological Buffers Investigation - Investigation of...

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Investigation of Biological Buffers Note: This investigation is written in the format of the Design section of an IB Biology Internal Assessment. Save this as a model for you to use next semester and in Bio 2. Background: Organisms, and therefore their tissues and cells, are constantly working to maintain homeostasis of their internal environments. For example, excess CO 2 in blood, as a product of metabolism , reacts with water in the blood to form carbonic acid . The carbonic acid releases hydrogen ions (H + ) into the blood, potentially lowering the pH of the blood and causing a dangerous condition called acidosis . Organisms rarely die of acidosis and therefore must have systems for buffering against changes in pH. The purpose of this study is to investigate the ability of the tissues (cells) of organisms to resist changes in pH and maintain internal homeostasis. Research Question: How well do organisms resist changes in internal pH? Hypothesis and Prediction Planning: Develop a hypothesis (tentative, testable explanation) that relates to the research question. Make a specific, measurable prediction (prophecy) that will support the hypothesis, and that relates to the methods below. Hypothesis: _________________________________________________________________ ____________________________________________________________________________ Prediction: _________________________________________________________________ ____________________________________________________________________________ Independent Variable: ______________________________
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Copy of Biological Buffers Investigation - Investigation of...

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