Design and Investigation:













Named the tissue or apparatus
Set a suitable range of solutions/Temperature etc.
Set a control experiment if required for comparison.
Each left for the appropriate length of time
Measurement of initial and final readings.
Measurement of change in time/length/mass etc.
External blotting if required
Calculation + result compare
Repeat for reliability / Replicate
Take average of readings
Repeat using narrower range of source/temp/light etc.
Use graphs
Refrence to low/medium/high risk
Why experiment is repeated?





Reliability of result
To reduce experimental error
Need for average/mean
So that result is doubtless
To statistical significance
How an investigation could be improved?













Repeat
Find mean/average result
Take measurements at smaller intervals
Identify errors
Increase reliability
Samples at regular intervals
Use larger samples
Use a water bath(if required)
Method/idea of maintaining external conditions
More frequent monitoring
Recording on time
Simultaneous readings
Avoid time delay / save time.