Scientific Investigation + Analyzing Graphs

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What is an independent variable?

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The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable. In the example, 'Medicine A' is the independent variable.

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What is a dependent variable?

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The dependent variable is the factor that is measured or observed in an experiment. It is affected by changes in the independent variable.

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What is a control group?

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A control group is a group in an experiment that does not receive the experimental treatment and is used as a benchmark to measure how the other tested subjects do.

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What is the Y-axis in a graph?

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The Y-axis is the vertical line on a graph that typically represents the dependent variable.

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What is the X-axis in a graph?

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The X-axis is the horizontal line on a graph that typically represents the independent variable.

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What does it mean to keep variables constant in an experiment?

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Keeping variables constant means ensuring that all factors except the independent variable are kept the same throughout the experiment to ensure valid results.

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What is the purpose of a hypothesis in scientific investigation?

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A hypothesis is a testable prediction about the relationship between two or more variables.

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What is the significance of data sets in analyzing graphs?

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Data sets provide the information needed to create graphs, allowing for visual representation and analysis of trends and relationships.

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What is the role of enzymes in biological processes?

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Enzymes are biological catalysts that speed up chemical reactions in the body, often working best at specific conditions such as pH.

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How can you determine the best pH for an enzyme from a graph?

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By analyzing the graph, you can identify the pH at which the enzyme activity is highest, indicating optimal conditions.