Monday, April 6, 2009
Mon-Day 1
AP Chem- related the value of the STANDARD free energy change for a reaction to its K, equlibrium constant. BOTH values qualitatively tell you the SAME information. A NEGATIVE standard free energy change INDICATES a K value GREATER THAN ONE i.e. products are favored AT EQUILIBRIUM (when delta G for the reaction (NOT DELTA G STANDARD) or process reaches zero).
We did some qualitative and quantitative comparisons of delta G standard values and their corresponding K values.
We then learned to compute the Gibbs Free Energy change for a reaction STARTING WITH NON-STANDARD concentrations/pressures of the reactants and products, using the RTlnQ equation. TWO important things can be seen from this calculation:
1. whether the reaction will favor products (NEGATIVE delta G) or reactants (POSITIVE delta G) as the reaction goes to equilibrium.
2. the MAXIMUM quantity of USABLE energy to do WORK that can be extracted from this reaction until it reaches equilibrium.
I've posted the answer to AP exam question from this weekend; it has a thermo question relevant to the upcoming test.
Bio 6/7- Study your notes and the posted extra help worksheets tonight.
We discussed the Law of Independent Assortment and the combinations of alleles in the sperm or egg that can be formed as a result. We looked at an exception to this law called GENE LINKAGE, in which two or more genes are "linked"/found on the same chromosome and , barring crossing over between these genes, the genes will be inherited together because they stay together in a given sex cell.
We discussed cloning, the process by which the DNA of a diploid donor nucleus is fused with an egg that has NO nucleus in order to form a diploid cell that can undergo embryonic development. The "clone" that forms is genetically identical to the organism that DONATED its nucleus to the egg and thus will look almost exactly or exactly like the nucleus-donating organism.
We also discussed in-vitro fertilization in which an egg is fertilized by sperm in a nutrient medium in a petri dish instead of "in-vivo" in the oviducts. The embryo formed is then implanted in a uterus that is hormonally prepared for pregnancy i.e. thick with blood vessels/capillaries and ready to embed the embryo.
We discussed cloning, the process by which the DNA of a diploid donor nucleus is fused with an egg that has NO nucleus in order to form a diploid cell that can undergo embryonic development. The "clone" that forms is genetically identical to the organism that DONATED its nucleus to the egg and thus will look almost exactly or exactly like the nucleus-donating organism.
Bio 8- Study your notes and the posted extra help worksheets tonight.
We discussed the Law of Independent Assortment and the combinations of alleles in the sperm or egg that can be formed as a result. We looked at an exception to this law called GENE LINKAGE, in which two or more genes are "linked"/found on the same chromosome and , barring crossing over between these genes, the genes will be inherited together because they stay together in a given sex cell.
We did some qualitative and quantitative comparisons of delta G standard values and their corresponding K values.
We then learned to compute the Gibbs Free Energy change for a reaction STARTING WITH NON-STANDARD concentrations/pressures of the reactants and products, using the RTlnQ equation. TWO important things can be seen from this calculation:
1. whether the reaction will favor products (NEGATIVE delta G) or reactants (POSITIVE delta G) as the reaction goes to equilibrium.
2. the MAXIMUM quantity of USABLE energy to do WORK that can be extracted from this reaction until it reaches equilibrium.
I've posted the answer to AP exam question from this weekend; it has a thermo question relevant to the upcoming test.
Bio 6/7- Study your notes and the posted extra help worksheets tonight.
We discussed the Law of Independent Assortment and the combinations of alleles in the sperm or egg that can be formed as a result. We looked at an exception to this law called GENE LINKAGE, in which two or more genes are "linked"/found on the same chromosome and , barring crossing over between these genes, the genes will be inherited together because they stay together in a given sex cell.
We discussed cloning, the process by which the DNA of a diploid donor nucleus is fused with an egg that has NO nucleus in order to form a diploid cell that can undergo embryonic development. The "clone" that forms is genetically identical to the organism that DONATED its nucleus to the egg and thus will look almost exactly or exactly like the nucleus-donating organism.
We also discussed in-vitro fertilization in which an egg is fertilized by sperm in a nutrient medium in a petri dish instead of "in-vivo" in the oviducts. The embryo formed is then implanted in a uterus that is hormonally prepared for pregnancy i.e. thick with blood vessels/capillaries and ready to embed the embryo.
We discussed cloning, the process by which the DNA of a diploid donor nucleus is fused with an egg that has NO nucleus in order to form a diploid cell that can undergo embryonic development. The "clone" that forms is genetically identical to the organism that DONATED its nucleus to the egg and thus will look almost exactly or exactly like the nucleus-donating organism.
Bio 8- Study your notes and the posted extra help worksheets tonight.
We discussed the Law of Independent Assortment and the combinations of alleles in the sperm or egg that can be formed as a result. We looked at an exception to this law called GENE LINKAGE, in which two or more genes are "linked"/found on the same chromosome and , barring crossing over between these genes, the genes will be inherited together because they stay together in a given sex cell.
# posted by C @ 3:13 PM 
