Practice Questions
1.State the definition of a pathogen
Pathogens are microorganisms that cause infectious disease.
2. Explain how bacteria make us ill
Bacteria may produce poisons (toxins) that damage tissues and make us feel ill.
3. State 3 ways that pathogens are transmitted
By air, direct contact and by water
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