Temperature and Respiration in Crickets

Temperature and Respiration in Crickets Planning

I am going to investigate respiration in crickets and how temperature

varies the rate of respiration. The calculation for aerobic

respiration is:

[IMAGE]Oxygen + Glucose Carbon dioxide + water + energy

[IMAGE]6O2 + C6H12O6 6CO2 +6H2O + (J)

I will do the experiment safely by making sure that the water will not

be too hot or too cold, this is a safety precaution for me as well as

the crickets. As we don't want to cause the crickets too much distress

or pain.

It will be a fair test and accurate because I will:

v Use the same crickets

v Same mass of crickets

v Let the crickets return to room temperature

v Reset the measuring device after each experiment

v Do each experiment 3 times to get an average

I predict that the lower the temperature the lower the rate of

respiration.

Equipment list:

v 2 beakers- a lager one that will hold the different temperatures of

water, a smaller one to hold the ink marker.

v Crickets- to test on

v Bung- containing delivery tube and waste (reset) tube

v Ink- to mark distance on the scale

v Delivery tube with scale on- to mark distance

v CO2 remover- to remove the CO2

v Excess tube for reset.

I will measure the amount of oxygen used by the crickets by measuring

how far the ink marker has traveled up the scale, the rate of