Answer the following question given this paragraph: 

Amoebozoa The amoebozoans characteristically exhibit pseudopodia that extend like tubes or flat lobes, rather than the hair-like pseudopodia of rhizarian amoeba (Figure 23.26). The Amoebozoa include several groups of unicellular amoeba-like organisms that are free-living or parasites.


Q: The nuclear envelope is a double-layered plasma membrane like the cell membrane, although without what?


A:
membrane proteins