Thursday, June 5, 2008
Thurs-Day 1
Bio- we did the Part D lab section from the January 2007 LE Regents and then we discussed the Diffusion Through a Membrane lab by applying the concept of selective permeability to some situations that showed different initial concentrations of substances on either side of a cell membrane. We noted that the SIZE and CHARGE of a particle/nutrient/molecule/ion determined whether the particle could pass through the pores in a cell membrane. SMALL molecules can easily diffuse passively through a cell membrane without the need of active transport/ATP use. LARGE molecules must first be DIGESTED/broken down to smaller molecules before they can diffuse through a cell membrane; some larger molecules can be ACTIVELY TRANSPORTED through a TRANSPORT PROTEIN channel that is embedded in the cell membrane.
Chem 7/8- took the Nuclear Unit exam.
Chem 9- took the Nuclear Unit exam and then we did/reviewed some of the August 2006 Regents.
Chem 7/8- took the Nuclear Unit exam.
Chem 9- took the Nuclear Unit exam and then we did/reviewed some of the August 2006 Regents.
# posted by C @ 9:57 AM 
