I finally got through security, but oh wait... There's more! (The cell Membrane)

I arrived just outside the Cell Wall, which citizens call the Cell Membrane. It is the barrier between the Cell Wall and the entire city, keeping Cell held together and let's people in and out, protecting the city from dangerous 'people'. I was an outsider, not being oxygen, carbon dioxide, or steroid, the 'guards' didn't want to let me in, but after a little explanation of who I was and some paper work, I was in through the gates, also known as pores. Now, I am waiting to get through to the cytoplasm!
Here is a diagram of the 'gate'
Here is a picture of Cell's second 'gate'!