Select all the correct answers. Based on these images, what can you say about the tentacles of an octopus and the limbs of a lizard?

They’re homologous structures.
They’re analogous structures.
They’re vestigial structures.
They’re neither homologous nor analogous structures.
They’re neither vestigial or homologous structures.

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