Practice Questions
1.State the independent variable in experiment above
pH
2. Give an example of a variable that has been controlled in the experiment above.
Temperature
3. Suggest how the experiment could be made more accurate.
Use more pH values between 5 and 9, to find out where the optimum pH value is.
Factors affecting the rate of photosynthesis
Measuring & calculating rates of photosynthesis
Inverse square law and photosynthesis
Economics of enhancing the conditions in greenhouses
Investigating the effect of light intensity on the rate of photosynthesis
Data analysis and nervous system
The effect of a factor on human reaction time
Controlling blood glucose concentration
Regulating water and nitrogen levels in the body.
Hormones and human reproduction
Using hormones to treat infertility
Control and coordination in plants using hormones
Investigating the effect of light or gravity on the growth of newly germinated seedlings