Practical data and reasoning

Practical reasoning

Microscopy and mitotic index

Revise microscope calibration, image measurements, root-tip counts and the limits of a mitotic-index conclusion.

Practical reasoning

Enzyme practical data

Revise enzyme rates, fixed endpoints, controls, repeats and interpretation of temperature or pH investigations.

Practical reasoning

Osmosis and water potential data

Revise signed mass changes, dilution series, zero-change graphs and conclusions about plant-tissue water potential.

Practical reasoning

Photosynthesis practical data

Revise oxygen-output measurements, chloroplast dye assays, controls, limiting factors and rate interpretation.

Practical reasoning

Respiration practical data

Revise culture measurements, respirometer volume changes, control corrections, mass-normalised rates and RQ.

Practical reasoning

Ecology sampling and transect data

Revise random quadrats, systematic transects, abundance, frequency, biodiversity and conclusions about species distribution.

Practical reasoning

Membrane permeability practical data

Interpret pigment leakage, colorimeter readings, fair comparisons and limitations in membrane-permeability investigations.

Interpret pigment separation, Rf measurements, comparable conditions and the limits of identification from a chromatogram.

Revise dilution standards, blanks, calibration curves, interpolation and correction for dilution of an unknown sample.

Connect observed gas-exchange and transport structures with their functions, drawings and the limits of a prepared specimen.

Revise inhibition-zone measurements, controls, replication and the limitations of comparing antimicrobial effects.

Interpret distributions, control side preferences, distinguish taxis from kinesis and avoid treating repeated counts as independent animals.