# Temperature and Respiration in Crickets

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 respiration at different temperatures and conditions. The variables that affect the rate of respiration are: v Size of cricket (the greater the mass the greater amount of respiration needed) v Surface area of the cells (the greater the surface area the more space for respiration to occur) v Metabolic rate (the lower, the less respiration required) v Activity (the less, the less respiration required) v Temperature of surroundings (the lower the temperature the less respiration occurs) v Amount of oxygen present (less oxygen means less aerobic respiration can take place) v The amount of glucose present (less glucose present means less respiration can occur) Insects? respiratory systems use a system called Tracheal Systems. Tracheae are tubes that carry air to cells for gas exchange.