AP BIOLOGY

Detailed explanation-1: -The nuclear envelope has a complex structure, consisting of two nuclear membranes, an underlying nuclear lamina, and nuclear pore complexes (Figure 8.1). The nucleus is surrounded by a system of two concentric membranes, called the inner and outer nuclear membranes.

Detailed explanation-2: -Nuclear Membrane The nuclear membrane is a double layer that encloses the cell’s nucleus, where the chromosomes reside. The nuclear membrane serves to separate the chromosomes from the cell’s cytoplasm and other contents.

Detailed explanation-3: -Every nucleus is girdled and covered by a double-layered membrane, known as the nuclear envelope or nuclear membrane. It separates the nucleoplasm (the fluid present in the nucleus), from the cytoplasm. The nuclear membrane is present in both the plant and animal cells.

Detailed explanation-4: -Nucleus – central structure in a cell that contains the cell’s genetic material. Lipid bilayer – a double layer of lipid molecules; the outer cell membrane and the nuclear envelope are each made up of a lipid bilayer.