Under a microscope, a series of cells are observed that lack membrane-bound internal organelles . Which is most likely the cell type

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

to figure the total magnification of an image that you are viewing through the microscope is really quite simple. to get the total magnification take the power of the objective (4x, 10x, 40x) and multiply by the power of the eyepiece, (usually 10x)