Practice Questions
1.What is a gamete?
A gamete is a sex cell. In animals this would be a sperm or egg cell
2.During meiosis, how many times does the cell divide?
twice
3.Explain why gametes must contain half the number of chromosomes.
Each gamete is haploid, so it has half the normal number of chromosomes. During fertilisation, the diploid number is restored.
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