Q1
3) Neurones pass information around the body.
3.1)Why are reflex reactions important? [1 mark]
3.2) Caffeine is a drug found in coffee.
After a person drinks coffee information passes through neurones in the nervous system more quickly.
Suggest a hypothesis for the effect of caffeine concentration on reaction time. [1 mark]
3.3) Two students investigated the effect of caffeine concentration on reaction time. This is the method used.
(Total for Question 3 = 8 marks)
3.1)Why are reflex reactions important? [1 mark]
3.2) Caffeine is a drug found in coffee.
After a person drinks coffee information passes through neurones in the nervous system more quickly.
Suggest a hypothesis for the effect of caffeine concentration on reaction time. [1 mark]
3.3) Two students investigated the effect of caffeine concentration on reaction time. This is the method used.
- Student A drinks a cup of coffee.
- Student B holds a ruler above Student A’s hand.
- Student B drops the ruler.
- Student A catches the ruler as quickly as she can.
- The distance the ruler falls is recorded.
(Total for Question 3 = 8 marks)