What do mitochondrial and thylakoid membranes have in common?

a. they both use energy carriers that were made in the krebs cycle.
b. they both are involved in cellular respiration in animal cells.
c. they both contain the chlorophyll pigment.
d. they both use atp synthase proteins in atp production.

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