Consider the following statements and choose the correct answer:
1. The outer membrane of the nuclear envelope forms vesicles by 'blebbing'
2. The Golgi membranes have been variously described as originating from the plasmalemma nuclear envelope, annulate lamellae and ER
3. Vesicles arising from the Golgi complex fuse to form the plasmalemma
4. The Golgi complex cisternae form primary Iysosomes by blebbing