3. There are about 250 million molecules of hemoglobin in each red blood cell. Considering that all of the heme molecules are binding oxygen and that the red blood cell volume is about 0.1 pL, what is the concentration of O2 in a red blood cell? (For comparison, water at 37oC contains about 0.4 mM dissolved O2.) Please show work.
4. Cell Cycle (fill-in the blank with prophase, metaphase, anaphase, telophase, cytokinesis or stages of interphase (Growth 1, Synthesis, Growth 2). (some may be used more than once while others may not be used at all.)
__________ separation of sister chromatids (copied chromosomes)
__________ copied chromosomes align in the middle of the cell
__________ microtubule spindle forms
__________ nuclear membrane forms around chromatin
__________ separation of all cellular components into two different cells
__________ copied chromosomes condense
__________ duplication of DNA
__________ nuclear membrane breaks down