A gas is compressed from an initial volume of 5.55 L to a

Bio221-Exam#2 ● Endomembrane System: ○ Nuclear envelope (encloses the nucleus), ER, golgi apparatus, lysosomes, vacuoles and peroxisomes. ○ Also includes the plasma membrane ○ Organelles pass material to each other ■ Vesicles​: Small membrane-enclosed spheres. ● Nucleus: ○ Internal compartment that is enclosed by a double membrane structure ​(Nuclear Envelope) ○ Large organelle~10-20% of total cell volume ○ Nuclear Pores​: Formed where the inner and outer nuclear membranes make contact with each other. ■ Passageway for the movement of molecules and macromolecules into and out of the nucleus. ○ Chromosome:​ Composed of genetic material (DNA) and many proteins that help to compact the chromosome to fit inside the nucleus. ■ Ex: Histone Proteins ■ Chromatin ○ Nuclear Matrix: ■ #1.NuclearLamina:​Composed of intermediate filaments that line the inner nuclear membrane. ■ #2.InnerNuclearMatrix:​ Connected to the lamina and fills the interior of the nucleus. ■ Organizes chromosomes in a nucleus ○ Nucleolus:​ Prominent region in the nucleus that is in charge of the assembly of ribosomal subunits. ■ One small & large subunit ■ RNA molecules & several types of proteins ■ Ribosomal proteins are produced in the cytosol and imported into