Sp figures: 12-5, 6, 10, 11, 12, 16. Vocabulary:nuclear pore complex/nuclear matrix/chromatin nuclear envelope/nucleoporins/nuclear localization signal/ importins/histones/nucleosomes/scaffold/topoisomerases. There are yellow fibers in the nucleus which are essentially dna molecules; they exist with protein components to make up what biochemist"s call chromatin fibers: chromatin fibers exist all over the nucleus. The nucleus has a double membrane inner membrane and outer membrane known as the nuclear envelope. Nulcear pores exist as a variety of openings; a typical eukaryote consists of 1 to 3,000- 4,000 of these pores per nucleus: it is the gateway to get materials in and out of the nucleus. Nucleoplasm is the soluble ( liquid ) portion of the nuclear material which contains the chromatin. Nuclear matrix is the skeleton/fibrous network through which things must move; on which certain types of activities are thought to be organized. Chromatin: dna/protein complex that constitutes (makes up) chromosomes. There are approximately equal amounts of dna/protein proteins by mass; there are.