What do you know about a chemical compound by looking at its chemical
formula?
a the number and kinds of atoms in the compound
b how many molecules are in a sample
20%
c the properties of the molecules in the compound
60%
d how the compound reacts with other compounds

You are given an electron micrograph of a bacterial cell. in the micrograph you can clearly see three thin layers of different densities surrounding the cell. based on the micrograph, you can infer that this cell is and would appear after application of the gram stain procedure. gram-negative / pink gram-positive / purple gram-positive / pink gram-negative / purple