An oncologist is studying HeLa cell cultures using high-resolution confocal microscopy to model cell volume changes during the cell cycle.
Cell X is a spherical cell in early G1 phase with a radius of 7.2 μm7.2\text{ }\mu\text{m}7.2 μm.
Cell Y is a dividing cell approximated as a cylinder of length 38 μm38\text{ }\mu\text{m}38 μm and radius 6.4 μm6.4\text{ }\mu\text{m}6.4 μm.
State the stage of mitosis during which chromosomes line up individually along the equator (metaphase plate) of the cell.
Calculate the volume of the spherical Cell X. Use the formula:
volume of sphere=43πr3 \text{volume of sphere} = \frac{4}{3}\pi r^3 volume of sphere=34πr3Give your answer in standard form to 2 significant figures, in μm3\mu\text{m}^3μm3.
Calculate the volume of the cylindrical Cell Y. Use the formula:
volume of cylinder=πr2h \text{volume of cylinder} = \pi r^2 h volume of cylinder=πr2hGive your answer in standard form to 2 significant figures, in μm3\mu\text{m}^3μm3.
