Biology Glossary

• Independent variable


  The variable you change
• Dependent variable


  The variable you measure
• For a fair test only one factor (independent variable) should change in an experiment
• You should aim to keep temperature and pH constant as they would effect enzyme reactions, photosynthesis and respiration
• To improve reliability - repeat
• Repeatable

  YOUR results being consistently close
• Reproducible

  OTHERS results being consistently close to yours