Chapter 8 Cell Cycle

5 Written Questions

1. any malignant growth or tumor caused by abnormal and uncontrolled cell division
2. produces 4 daughter cells that are not identical to the parent. daughter cells are haploids. there are 2 divisions. mieosis produces sex cells
3. The pairing of replicated homologous chromosomes during prophase I of meiosis.
4. cell division in which the nucleus divides into nuclei containing the same number of chromosomes
5. error in meiosis in which homologous chromosomes fail to separate

5 Matching Questions

1. chromosome
2. chromatin
3. autosome
4. homologous pair
5. G1

1. a a pair of chromosomes, one from each parent, that have relatively similar structures and gene values
2. b in interphase - cell grows rapidly, builds new organelles, phase where the cell spends most time
3. c a threadlike body in the cell nucleus that carries the genes in a linear order
4. d The complex of DNA and proteins that makes up a eukaryotic chromosome. When the cell is not dividing, chromatin exists as a mass of very long, thin fibers that are not visible with a light microscope.
5. e any chromosome that is not a sex chromosome

5 Multiple Choice Questions

1. diploid cell formed when a sperm fertilizes an egg
   1. G1
   2. G2
   3. cancer
   4. zygote
2. Cell continues to grow and copy chromosomes
   1. synapsis
   2. cytokinesis
   3. Synthesis
   4. mitosis
3. The final period of interphase during which the cell prepares for mitosis.
   1. cancer
   2. G2
   3. G1
   4. zygote
4. Chromosomes condense, spindles form in each new cell, and spindle fibers attach to chromosomes.
   1. Synthesis
   2. chromatin
   3. Prophase 1
   4. Prophase 2
5. the region of the chromosome that holds the two sister chromatids together during mitosis
   1. cancer
   2. chromosome
   3. centromere
   4. chromatin

5 True/False Questions

1. crossing over → process in which homologous chromosomes exchange portions of their chromatids during meiosis

   True        False

2. cytokinesis → organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells

   True        False

3. benign tumor → the region of the chromosome that holds the two sister chromatids together during mitosis

   True        False

4. sister chromatid → one of the two identical parts of a duplicated chromosome in a eukaryotic cell

   True        False

5. Random Fertilization → error in meiosis in which homologous chromosomes fail to separate

   True        False