مطنيتيتيزتي يتيتريتيتيزي ينيتتيتيت ه
Answer:
B) stain only the thicker peptidoglycan cell walls
Explanation:
Gram staining is a technique which was developed by the Hans Christian Gram in 1884 to distinguish the bacterial strains. Based on the colour absorbed and retained by the bacteria, the bacteria are distinguished either as gram-positive or gram-negative.
He used a colour stain- crystal violet which is a positive dye and binds to the cell wall made of peptidoglycan. The crystal violet binds to the cell wall with the help of a mordant called iodine. If this dye retains inside and the cell appears purple then the cell is considered gram-positive else negative.
Thus, Option-B is correct.
A molecule or compound is made when two or more atoms form a chemical bond, linking them together. The two types of bonds are ionic bonds and covalent bonds. The distinction between them has to do with how equally the atoms participating in the bond share their electrons. hope this helps.
B. By lowering the energy need for the reaction, you increase the reaction speed or the rate.
Answer:
b. Sn2+; cation; tin(II) ion
Explanation:
Atoms of elements can either lose or gain electrons to become charged atoms i.e ions. An atom that loses electrons to become positively charged is called a CATION while one that gains electrons to become negatively charged is called an ANION.
In this case, tin element (Sn) loses 2 electrons to become positively charged with a charge number of 2 i.e Sn2+. Since it is a positively charged ion, it is called a CATION and named Tin (II) ion.