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Cells called receptors detect stimuli (changes in the environment).
State some receptors and the stimuli they detect.
Draw a labelled diagram of a light receptor cell
Describe a simple reflex action
what is an effector ?
how is the amount of water in the body controlled?
How is ion content controlled ?
Why is it important to control body temperature and how is it done?
Why must blood sugar be controlled and is it done
What are hormones and how are they transported around the body
Describe the function of the 3 main hormones in the menstrual cycle
Describe how oral contraceptives can prevent pregnancy
Describe the problems with early birth control pills and how they have been improved
describe how IVF works
How do hormones control phototropism and gravitropism
Why do roots grow down ? (gravitropism)
why do shoots grow up ?
Explain why shoots grow towards the light ?
give 3 uses of plant hormones by farmers
name 3 stimuli which affect humans
what is a reflex and why are they important
what are the differences in action between nerves and hormones
describe issues with IVF
describe the issues with the contraceptive pill
How long is the menstrual cycle and when approximately does ovulation occur
draw a picture of the reflex arc
