Question

The nucleus of the eukaryotic cell is important because it A. Serves as the powerhouse of the cell B. Controls the passing of substances through the cell membrane C. Its rigidity controls the passing of substances through the cell wall D. Contains DNA and controls the cell

Answer 1

So let's eliminate some answer choices.

Do you know what the mitochondria is or what it does?

Answer 2

Well since you're offline, when you come back

Go look these terms up in your book (or just Google them)

mitochondria
nucleus
plasma membrane

(also remember that not all eukaryotic cells have cell walls- only plant cells have cell walls, while animal cells do not. However, all eukaryotes do have cell membranes)

Answer 3

and don't forget what these things look like in a cell