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Biology Chapter 9

Cellular Reproduction

QuestionAnswer
What is the longest of the major parts of the cell cycle? Interphase
___ is the stage during the cell cycle where the cell's nucleus and nuclear material divide. Mitosis
____ is the stage during the cell cycle in which the cytoplasm and the organelles except for the nucleus of the cell divide and make 2 new cells cytokinesis
What is the product of cytokinesis? Daughter cells
When the DNA is spread out in the nucleus while it is being used to make mRNA and copy itself, the DNA is called: chromatin
During prophase of mitosis, the chromatin condenses into structures called ___. chromosomes
During ___ of mitosis, the chromosomes line up in the center of the cell. metaphase
During__ of mitosis, the nuclear envelope and the nucleolus disappear while the chromatin condenses into chromosomes. prophase
Sister chromatids are attached to the spindle fibers by____. centromere
During which stage of mitosis do the chromosomes begin moving to the opposite poles of a cell? Anaphase
During __ of mitosis, the sister chromatids arrive at opposite sides of the cell, the nuclear envelop reappears as well as the nucleolus. telophase
____ is anything in an organism's environment that can cause cells to begin dividing out of control. carcinogen
____ is uncontrolled cell division. Cancer
_______ are normal genes in normal cells that are constantly telling the cell to divide but are shut off if the cell is touching a neighboring cell. Oncogenes
______ are normal genes in normal cells that code for sensors on the surface of the cell that tell the cell if its touching another cell. If the cell is touching another cell, the cell will not divide. Tumor suppressor genes.
____ is a very important event that occurs in prophase I of meiosis in which homologous chromosomes exchange chromosomal segments. This increases the genetic variation of the organism. Crossing over
Cells that contain pairs of chromosomes are said to be ___. Body cells of organisms are this. diploid
Cells that only contain one chromosome of a pair are said to be ___. Gamete cells are this. haploid
__________ is the process of a sperm and an egg fusing together. fertilization
The process of _____ creates haploid gametes. meiosis
During ____ chromosome pairs are pairing up, aligning in the center of the cell, then traveling to opposite sides of the cell. Meiosis I
During ____ individual chromosomes (sister chromatids) are aligning in the center of the cell then traveling to opposite sides of the cell. Meiosis II
Created by: abolvin