Planning an Experiment (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What is an essential characteristic of a well-constructed hypothesis?
What is an essential characteristic of a well-constructed hypothesis?
It must be specific and measurable
What type of error compromises the precision of experimental results?
What type of error compromises the precision of experimental results?
Random error
What distinguishes reproducibility from repeatability?
What distinguishes reproducibility from repeatability?
Reproducibility involves different methods
What is required to achieve valid experimental results?
What is required to achieve valid experimental results?
Controlling all variables except one
In an experiment on how temperature affects enzyme activity, what is the dependent variable?
In an experiment on how temperature affects enzyme activity, what is the dependent variable?
Rate of enzyme activity
Why must control variables be kept constant during an experiment?
Why must control variables be kept constant during an experiment?
To ensure only the independent variable affects the dependent variable
What is the minimum number of times each experimental condition should be conducted?
What is the minimum number of times each experimental condition should be conducted?
Three times
Which apparatus provides greater precision for measuring small pH changes?
Which apparatus provides greater precision for measuring small pH changes?
pH meter
Where should measurements be taken from when reading a measuring cylinder?
Where should measurements be taken from when reading a measuring cylinder?
Bottom of the meniscus
When should you exclude an anomalous result from your analysis?
When should you exclude an anomalous result from your analysis?
When equipment malfunction is identified