Tuesday, March 11, 2008
Tues-Day 2
Bio- we looked at the hormonal negative feedback mechanisms and the hormone secretion-receptor molecules of target glands by which the menstrual cycle is regulated. There is a lot to keep track of but we were able to see, step by step, the cause and effect of each of the hormones on their effectors/glands and on the uterus as it is prepared for a possible fertilized egg implantation.
We then began to discuss the process by which sex cells, sperm and ova, are made. This process, by which the number of chromosomes per cell is HALVED, is called meiosis.
We will map out the various phases and note other very important features that result in the adaptive advantages of creating cells that can unite in sexual reproduction.
Chem 7/8- we used many of our learned chemistry skills today in solving multi-step chemical equation and stoichiometry problems. To do well at this advanced part of the course, naming compounds and writing the respective formulas must be second nature, otherwise you must practice heavily (see past Blackboard worksheets) until you can do so. Once you can name and write formulas correctly, you can then focus on balancing, mole conversions, and stoichiometry. This unit combines many of your past chem skills.
We will continue with these problems tomorrow; if you are having trouble with these, I can easily go over problems with you at extra help.
We did a stoichiometry lab in which we reacted an acid and a salt to produce a different salt along with carbon dioxide and water. Based on our measurements, we can predict the expected quantity of the salt produced versus the actual quantity recovered and then we can calculate our percent yield for this experiment.
Chem 9- we used many of our learned chemistry skills today in solving multi-step chemical equation and stoichiometry problems. To do well at this advanced part of the course, naming compounds and writing the respective formulas must be second nature, otherwise you must practice heavily (see past Blackboard worksheets) until you can do so. Once you can name and write formulas correctly, you can then focus on balancing, mole conversions, and stoichiometry. This unit combines many of your past chem skills.
We will continue with these problems tomorrow; if you are having trouble with these, I can easily go over problems with you at extra help.
We then began to discuss the process by which sex cells, sperm and ova, are made. This process, by which the number of chromosomes per cell is HALVED, is called meiosis.
We will map out the various phases and note other very important features that result in the adaptive advantages of creating cells that can unite in sexual reproduction.
Chem 7/8- we used many of our learned chemistry skills today in solving multi-step chemical equation and stoichiometry problems. To do well at this advanced part of the course, naming compounds and writing the respective formulas must be second nature, otherwise you must practice heavily (see past Blackboard worksheets) until you can do so. Once you can name and write formulas correctly, you can then focus on balancing, mole conversions, and stoichiometry. This unit combines many of your past chem skills.
We will continue with these problems tomorrow; if you are having trouble with these, I can easily go over problems with you at extra help.
We did a stoichiometry lab in which we reacted an acid and a salt to produce a different salt along with carbon dioxide and water. Based on our measurements, we can predict the expected quantity of the salt produced versus the actual quantity recovered and then we can calculate our percent yield for this experiment.
Chem 9- we used many of our learned chemistry skills today in solving multi-step chemical equation and stoichiometry problems. To do well at this advanced part of the course, naming compounds and writing the respective formulas must be second nature, otherwise you must practice heavily (see past Blackboard worksheets) until you can do so. Once you can name and write formulas correctly, you can then focus on balancing, mole conversions, and stoichiometry. This unit combines many of your past chem skills.
We will continue with these problems tomorrow; if you are having trouble with these, I can easily go over problems with you at extra help.
# posted by C @ 2:45 PM 
