A gas is compressed from an initial volume of 5.55 L to a final volume of 1.22 L by an external pressure of 1.00 atm. During the compression the gas releases 124 J of heat. What is the change in internal energy of the gas?
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