Consider a concentration cell made of the following two compartments: Cl2(0.20 atm) 0 Cl2(1.0 M) and Cl2(2.0 atm) 0 Cl2(1.0 M). Platinum is used as the inert electrodes. Draw a cell diagram for the cell and calculate the emf of the cell at 25C.
Principles of Biology Professor Jensen Class Notes (Week 8) DAY 21: Cancer Biology: Nerve cells and Muscle Cells hardly ever undergo mitosis Tumor: Accumulation of cells that shouldn’t be there. G1 = Gap 1 G2 = Gap 2 S = Synthesis (making more DNA) Things that could go wrong for more mitosis: - Bad copies of cells - Mutation in DNA - Nondisjunction Signs of Cancer: - Random shapes - Large number - Small cytoplasmic volume - Multinucleated cells Cancer is a problem because it diverts resources away from cells that need them. Genes that are in control of the cell cycle: - Tumor Suppressors: Turn off the cell cycle (recessive) - Oncogenes: Turn on the cell cycle (dominant) ● Have to have the mutation of both for cancerous probability ● Cancer comes from an accumulation of misfortunate events P53: Regulates mutation (suppressor) [IMPORTANT] G1 Checkpoint: - Cell size large enough - All genetic material intact - Are you needed G2 Checkpoint: - Cell size large enough - All genetic material intact - Genetic Material duplicated - Need to use DNA repair enzymes Action Items: - Repair - Retire (G0 - Suicide Malignant vs. Benign Tumors: [both can KILL YOU!] - Benign: Contained - Malignant: Metastosizes (invades other tissue, doesn’t stay put) Size of telomere (disposable ends of chromosomes) determines cell li