BIOS-251: Exam 2 Review question and answers graded A+

Cell division in which the nucleus divides into nuclei containing the same number of chromosomes - Answer- Mitosis The resting phase of mitosis. Cell grows, performs its normal functions, and prepares for division; consists of G1, S, and G2 phases - Answer- Interphase Cells that have left the cycle and cease dividing for a long time (or permanently) - Answer- G Zero (G0) Phase The first gap, or growth phase, of the cell cycle, consisting of the portion of interphase before DNA synthesis begins. - Answer- G1 Phase The synthesis phase of the cell cycle; the portion of interphase during which DNA is replicated. - Answer- S Phase The second gap, or growth phase, of the cell cycle, consisting of the portion of interphase after DNA synthesis occurs. Growth and preparation for mitosis - Answer- G2 Phase First and longest phase of mitosis, during which the chromosomes become visible and the centrioles separate and take up positions on the opposite sides of the nucleus - Answer- Prophase Second phase of mitosis, during which the chromosomes line up across the center of the cell - Answer- Metaphase The third phase of mitosis, during which the chromosome pairs separate and move toward opposite poles - Answer- Anaphase