Tuesday, May 6, 2008
Tues-Day 2
Bio- we reviewed for tomorrow's Evolution exam. We discussed the five fields of science from which supporting evidence for the Theory of Evolution is found: Comparative Anatomy, Comparative Embryology, Biochemistry, Geology/Archaeology/Fossil Record, and Comparative Cytology. We reviewed evolutionary trees as a means to see evolutionary relationships as well as the natural EXTINCTION of species that occur when that species' traits lose their adaptive value in a changed environment or when the species is out-competed by other species.
We reviewed how a dichotomous key (see Blackboard for all answers) is used to help classify various organisms by using a series of yes/no questions.
We discussed divergent evolution which sees species separate and evolve in very different environments with different selecting agents (which can lead to homologous structures in species that had a common ancestor) and convergent evolution (which can lead to analogous structures in species that are not closely related) due to similar environmental selecting agents.
I'll post some more worksheets by this evening. Study, review, practice writing the FOUR scenarios that show evolution via natural or via artificial selection: peppered moth, antibiotic resistance in bacteria, insecticide resistance in insects, and necks of giraffes.
Chem 7/8- we reviewed the naming of acids and then drew out several acid-base neutralization reactions to see whether a given salt is acidic, basic, or neutral.
Doing so requires the knowledge of the 6 strong acids and the 8 strong bases.
We then did a lab procedure that experimentally determined the acidity, basicity, or neutrality of six different salts.
Chem 9-we reviewed the naming of acids and then drew out and balanced several acid-base neutralization reactions. We later used these neutralization reactions to see whether a given salt is acidic, basic, or neutral.
Doing so requires the knowledge of the 6 strong acids and the 8 strong bases.
We reviewed how a dichotomous key (see Blackboard for all answers) is used to help classify various organisms by using a series of yes/no questions.
We discussed divergent evolution which sees species separate and evolve in very different environments with different selecting agents (which can lead to homologous structures in species that had a common ancestor) and convergent evolution (which can lead to analogous structures in species that are not closely related) due to similar environmental selecting agents.
I'll post some more worksheets by this evening. Study, review, practice writing the FOUR scenarios that show evolution via natural or via artificial selection: peppered moth, antibiotic resistance in bacteria, insecticide resistance in insects, and necks of giraffes.
Chem 7/8- we reviewed the naming of acids and then drew out several acid-base neutralization reactions to see whether a given salt is acidic, basic, or neutral.
Doing so requires the knowledge of the 6 strong acids and the 8 strong bases.
We then did a lab procedure that experimentally determined the acidity, basicity, or neutrality of six different salts.
Chem 9-we reviewed the naming of acids and then drew out and balanced several acid-base neutralization reactions. We later used these neutralization reactions to see whether a given salt is acidic, basic, or neutral.
Doing so requires the knowledge of the 6 strong acids and the 8 strong bases.
# posted by C @ 2:12 PM 
