“Chromosomes & Cell Reproduction” Ch. 6 Test Prep “Chromosomes & Cell Reproduction”

Multiple Choice Chromosomes that are similar in size, shape, and genetic content are called _____. A. autosomes B. sex chromosomes C. homologous chromosomes D. DNA

Multiple Choice If nondisjunction occurs, one of the resulting cells will receive _____. A. two homologues of a chromosome B. four homologues of a chromosome C. six homologues of a chromosome D. eight homologue of a chromosome

Multiple Choice A mutation in which the chromosome piece reattaches to the original chromosome but in the reverse orientation, is known as a(n) _____. A. duplication B. inversion C. deletion D. translocation

Multiple Choice In human sexual reproduction, a male haploid gamete and a female haploid gamete unite to form which of the following? A. an egg cell with 46 chromosomes B. a zygote with 23 chromosomes C. a zygote with 46 chromosomes D. a sperm cell with 23 chromosomes

Multiple Choice Chromosomes that determine the sex of an individual are called _____. A. autosomes B. sex chromosomes C. homologous chromosomes D. chromatids

Multiple Choice Which of the following is the LEAST likely cause of cancer? A. overproduction of growth-promoting proteins B. overproduction of control proteins that slow the cell cycle C. inactivation of control proteins that slow the cell cycle D. inactivation of control proteins that stop the cell cycle

Multiple Choice DNA replication is checked during the _____. A. cell growth (G1) checkpoint B. DNA synthesis (G2) checkpoint C. mitosis checkpoint D. cytokinesis checkpoint

Multiple Choice Cells that might never divide include which of the following? A. skin cells B. nerve cells C. sex cells D. All of the above

Multiple Choice The cell cycle controls cell division _____. A. only in eukaryotes B. only in prokaryotes C. in both eukaryotes and prokaryotes D. only in multicellular organisms

Multiple Choice Mitosis occurs _____. A. immediately after the synthesis phase B. before the second growth phase C. after the second growth phase D. after cytokinesis

Multiple Choice During telophase, the _____. A. cytoplasm divides forming two new cells B. nuclear membrane dissolves C. chromosomes line up in the center of the cell D. None of the above

Multiple Choice Plant cells _____. A. lack centrioles B. lack a cell membrane C. divide to produce cells of unequal size D. All of the above

Multiple Choice Cell division in eukaryotes differs from cell division in prokaryotes because _____. A. in eukaryotes, the organelles must also be divided between cells B. prokaryotes lack a nucleus C. prokaryotes have a circular chromosome D. All of the above

Multiple Choice Which of the following is NOT a stage of mitosis? A. prophase B. metaphase C. cytokinesis D. telophase

Multiple Choice Which of the following does NOT play a role in cytokinesis in plant cells? A. Golgi apparatus B. belt of protein threads C. cell membrane D. cell plate

Multiple Choice A B C D Which stage shows telophase? C

Multiple Choice A B C D Which stage shows anaphase? A

Multiple Choice A B C D Which stage shows prophase? B

Multiple Choice A B C D Which stage shows metaphase? D

Multiple Choice A B C D Which of the following correctly indicates the order in which mitosis occurs? A. D, C, B, A C. B, D, A, C B. A, D, C D. A, C, B, D C. B, D, A, C

Multiple Choice The structure in the center of the plant cell could NOT be formed without which of the following? A. cell plate B. Golgi apparatus C. cell membrane D. All of the above

Multiple Choice The stage of the cell cycle that these cells are entering into is _____. A. first growth (G1) phase B. synthesis (S) phase C. mitosis D. cytokinesis

Multiple Choice The structure that is helping to divide the two new plant cells that are forming is called the _____. A. belt of protein threads B. ribosomes C. centromere D. cell plate

Multiple Choice The condition in which a diploid cell has an extra (or third) chromosome is called _____. A. monosomy B. nondisjunction C. trisomy D. karyotype

Multiple Choice Not counting the sex chromosomes, humans have 22 pairs of homologous chromosomes called _____. These code for most of our traits. A. sex chromosomes B. autosomes C. somatic cells D. lysosomes

Multiple Choice The human chromosome number found in somatic cells can best be described as _____. A. 46 B. 2n C. diploid D. all of the above

Multiple Choice The human chromosome number found in sex cells can best be described as _____. A. 23 B. n C. haploid D. all of the above

Multiple Choice An extra chromosome is caused by _____. A. a point mutatuion B. nondisjunction C. monosomy D. a deletion mutation

Multiple Choice Males have the following sex chromosomes: A. XO B. XX C. YY D. XY

Multiple Choice Eukaryotes use cell division to _____. A. grow B. develop C. reproduce D. All of the above

Multiple Choice During the karyotyping activity, homologous chromosomes were paired together due to _____. A. size B. banding patterns C. both A & B D. neither A nor B

Matching 1. mutations 2. gametes 3. zygote 4. DNA 5. karyotype A. egg cells and sperm cells B. supplies information that directs a cell’s activities and determines its characteristics C. changes in an organism’s genetic material D. a diploid cell that results from the fusion of two haploid gametes E. a picture of the chromosomes found in an individual’s cells 1. C 2. A 3. D 4. B 5. E

Matching 6. synthesis (S) phase 7. first growth (G1) phase 8. cytokinesis 9. cell cycle 10. mitosis A. chromatids are formed B. nucleus is divided into two nuclei C. major portion of the cell’s life D. cytoplasm divides E. a repeating sequence of cellular growth and division 6. A 7. C 8. D 9. E 10. B

Matching 11. cell plate 12. prophase 13. centriole 14. spindle fiber 15. anaphase A. made of an individual microtubule B. nuclear envelope dissolves C. membrane-bound cell wall D. centromeres divide E. made of nine triplets of microtubules 11. C 12. B 13. E 14. A 15. D

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