Measuring the rate of oxygen uptake (sort this out)

Question 1

Variables to control

Answer 1

• number of organisms
• temperature
• time
• amount of soda lime

Question 2

Equipment

Answer 2

• respirometer
• soda lime
• coloured liquid
• oranisms eg, maggots
• cotton wool
• stop clock
• maker pen

Question 3

Method

Answer 3

1. place 5g of maggots in a respirometer and replece the bung
2. inroduce a drop of dye into the glass tube
   3.