Biology: Finals Semester 1 Review

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What are controlled variables in an experiment?

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Controlled variables are factors that are kept constant to ensure that any changes in the dependent variable are due to the independent variable.

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Why are controlled variables important in experiments?

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They allow for the isolation of the independent variable's effects, ensuring a fair test.

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What is the difference between qualitative and quantitative observations?

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Qualitative observations describe characteristics (e.g., color, smell), while quantitative observations involve measurements and numbers (e.g., mass, length).

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What is a dependent variable?

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The dependent variable is the factor that is measured in an experiment, which is affected by changes in the independent variable.

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What is an independent variable?

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The independent variable is the factor that is changed or manipulated in an experiment to observe its effect on the dependent variable.

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How do you convert meters to kilometers?

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To convert meters to kilometers, divide the number of meters by 1000.

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What is enzyme activity?

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Enzyme activity refers to the rate at which an enzyme catalyzes a reaction, often influenced by factors like temperature and pH.

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What is the scientific method?

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The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

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What is a hypothesis?

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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 purpose of a control group in an experiment?

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The control group serves as a baseline to compare the effects of the independent variable, ensuring that results are due to the variable being tested.