Practical Skills in Biology I

Planning an ExperimentSign up

identify the apparatus, dependent and independent variables, and controlled variables required for an investigation · describe how to measure variables using appropriate instruments and correct techniques; identify health and safety issues · discuss repeat readings, sources of uncertainty/systematic error and how to reduce them · comment on the wider implications of biology (benefits/risks) and its social, environmental and historical context

Implementation and MeasurementsSign up

comment on the number of readings, range of measurements and significant figures · check inconsistent readings (e.g. points not on the line of a graph) · comment on how the experiment may be improved, including by using additional apparatus to reduce errors

Processing ResultsSign up

perform calculations using the correct number of significant figures; use the correct units throughout · plot results on a graph using an appropriate scale; comment on the relationship obtained · determine the relationship between two variables, or a constant from a graph (e.g. via the gradient using a large triangle) · suggest realistic modifications to reduce errors and improve the experiment; discuss uncertainties qualitatively and quantitatively