Experiment
This morning we just dissected either a cockroach or crickets during our biology practical. Our aim for this experiment is to learn how to preserve insects and plant as well as ways to dissect the insect. Unfortunately we were not given any practice before our practical due to the holiday we were having last Wednesday. So our biology teacher just brief us briefly what to do before the practical. Things just went little haywire during the first period of experiment as not all students knows how to deal with their 'pets' using chloroform. Somehow they just went over 'excited' watching their cockroaches suffering to death due to over dosage of chloroform given.(p.s : there's certain factor which causes them to behave as such.. think XP) Oh well the cockroach got to be killed before we preserve it. *amen*
Besides, Aaron had also bought a basket of crickets approximately 80 where about 20% of them died due to lack of oxygen or got bullied by the bigger size crickets. Those crickets killed by chloroform were placed in a oven to 'cook' it up about 5 minutes to harden it. As for cockroach (bigger size than cricket) we got to dissect around it's abdomen to remove their internal organs (can't seem to find any because i only saw slimy fluid and it's intestine which is black it color). It takes some effort for me to remove all those stuff from the cockroach as this is my first time dissecting an insect. *yuck* Then we need to stuff in some cotton wool into the cockroach to maintain it's original shape and then harden it using the oven. Then we need to pin up our specimen on a polystyrene board and marks will be given. Although it seems gross when you hear about dissecting cockroach as it's filthy, full of germs etc but now i manage to overcome my fear towards cockroach. p.s : i mean dead cockroach not those alive ones ....
In addition, we also preserved moss and ferns. For moss we used FAA solution as type of perservation. The solution smells horrible as it's type of chemical. As for chloroform, CHCl3 also known as trichloromethane and methyl trichloride able to remove the paint on the table due to it's acidic medium, air conditioning business but it may cause ozone depletion, anesthetic and produce dyes and also pesticides etc. Anyway, this is totally a new experience for me. Am looking forward for more challenges.
Blessed ..
This morning we just dissected either a cockroach or crickets during our biology practical. Our aim for this experiment is to learn how to preserve insects and plant as well as ways to dissect the insect. Unfortunately we were not given any practice before our practical due to the holiday we were having last Wednesday. So our biology teacher just brief us briefly what to do before the practical. Things just went little haywire during the first period of experiment as not all students knows how to deal with their 'pets' using chloroform. Somehow they just went over 'excited' watching their cockroaches suffering to death due to over dosage of chloroform given.(p.s : there's certain factor which causes them to behave as such.. think XP) Oh well the cockroach got to be killed before we preserve it. *amen*
Besides, Aaron had also bought a basket of crickets approximately 80 where about 20% of them died due to lack of oxygen or got bullied by the bigger size crickets. Those crickets killed by chloroform were placed in a oven to 'cook' it up about 5 minutes to harden it. As for cockroach (bigger size than cricket) we got to dissect around it's abdomen to remove their internal organs (can't seem to find any because i only saw slimy fluid and it's intestine which is black it color). It takes some effort for me to remove all those stuff from the cockroach as this is my first time dissecting an insect. *yuck* Then we need to stuff in some cotton wool into the cockroach to maintain it's original shape and then harden it using the oven. Then we need to pin up our specimen on a polystyrene board and marks will be given. Although it seems gross when you hear about dissecting cockroach as it's filthy, full of germs etc but now i manage to overcome my fear towards cockroach. p.s : i mean dead cockroach not those alive ones ....
In addition, we also preserved moss and ferns. For moss we used FAA solution as type of perservation. The solution smells horrible as it's type of chemical. As for chloroform, CHCl3 also known as trichloromethane and methyl trichloride able to remove the paint on the table due to it's acidic medium, air conditioning business but it may cause ozone depletion, anesthetic and produce dyes and also pesticides etc. Anyway, this is totally a new experience for me. Am looking forward for more challenges.
Blessed ..
