Some schools even offer bilingual instruction, typically Spanish and English. But the concept of bilingual education has evolved through the ages, given the immigrant make up of the U.S. The following information covers the basic types of bilingual education and conflicts over how language is used in the classroom.
Gram staining is a type of differential staining in which two types of bacteria are differentiated on the basis of their cell wall either gram positive or gram negative althouâ¦gh all the steps in gram staining are crucial , the most important step the most crucial step in the performance of the Gram staining procedure is the decolorization step ...
Gram's iodine - fixes the stain in gram positive bacteria Ethanol or acetone - washes the stain from gram negative bacteria Safranin - counterstain, will restain gram negative bacteria while not interfering with the previous stain in gram positive bacteria The mechanism is as follows, gram positive bacterial membrane pores shrink in response to the ethanol or acetone and prevent the stain from being washed.