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Cell_Cycle_Practice Name: 1. Which usually occurs in the rst meiotic division of a primary sex cell? A. 2. B. polyploidy C. crossing-over D. di erentiation crossing-over B. gene mutation C. polyplody D. nondisjunction The transfer of a section of one chromosome to a nonhomologous chromosome is known as A. 4. fertilization During egg cell production in a human female, the 21st pair of chromosomes may fail to separate. This failure to separate is known as A. 3. Date: synapsis B. deletion C. translocation D. disjunction Normal mitosis results in the formation of two nuclei that are genetically A. identical to each other and identical to the original nucleus B. identical to each other but di erent from the original nucleus C. di erent from each other but identical to the original nucleus D. di erent from each other and di erent from the original nucleus 5. The egg cells of a species are most similar to the sperm cells of that species in their A. 6. B. amount of stored food C. chromosome number D. shape and size The two parts of a double-stranded chromosome are held together by a A. 7. degree of motility nucleolus B. spindle ber C. centromere The formation of a tetrad during meiosis occurs as a result of A. nondisjunction B. C. chromosomal alterations D. cell plate formation page 1 synapsis D. centriole Cell_Cycle_Practice 8. The distribution of chromosomes in one type of cell division is shown in the diagram below. Which process is represented in the diagram? A. 9. asexual reproduction 11. C. mitosis D. vegetative propagation B. C. D. The process of meiotic cell division in a human male usually forms A. one diploid cell, only B. C. one monoploid cell, only D. four monoploid cells four diploid cells Each root cell of a giant redwood tree contains 22 chromosomes. Two new cells that each contain 11 pairs of chromosomes are produced when one of these cells undergoes cell division involving the process of A. 12. meiosis Which diagram represents a sperm that can unite with a normal egg to produce a zygote that will develop into a normal human male embryo? A. 10. B. oogenesis B. meiosis C. mitosis D. synapsis The extra chromosome found in the cells of humans with Down's syndrome is the result of A. failure of the developing embryo to undergo meiotic cell division B. failure of the chromatids to replicate between mitotic cell divisions C. nondisjunction during meiotic cell division in the gonads of a parent D. nondisjunction during mitotic cell division in the muscle cells of a parent page 2 Cell_Cycle_Practice 13. The horse, Equus caballus, has 64 chromosomes in its body cells. The donkeys, Equus asinus, has 62. How many chromosomes would most likely be found in the body cells of a hybrid mule resulting from a mating of these two animals? A. 14. 126 63 D. 32 + B. + C. + D. + 3 B. 6 C. 12 D. 24 C. budding D. sporulation Uncontrolled cell division is characteristic of A. 17. C. If the diploid chromosome number of a cloned plant is 12, the chromosome number of the plant cell used to produce the cloned plant is A. 16. 95 The diagram shown represents a cell that will undergo mitosis. Which diagrams below best illustrate the nuclei of the daughter cells that result from a normal mitotic cell division of the parent cell shown? A. 15. B. cancer B. meiosis Which statement best describes a di erence between cell division in plant and animal cells? A. In animal cells, cytoplasmic division is accomplished by “pinching in” of the cell membrane, while in plant cells a cell plate is synthesized. B. In plant cells, cytoplasmic division is accomplished by a “pinching in” of the cell membrane, while in animal cells a cell plate is synthesized. C. In plant cells, centrosomes have a distinct role in spindle formation, while in animal cells centrosomes do not function during cell division. D. In animal cells, replication of chromosomes occurs during the nondividing phase, while in plant cells replication occurs when the nuclear membrane disintegrates. page 3 Cell_Cycle_Practice 18. Which diagram below represents a plant cell close to the nal stage of mitotic cell division? B. A. 19. 20. 21. C. D. Which diagram best represents mitotic cell division? A. B. C. D. What would most likely result if mitosis was not accompanied by cytoplasmic division? A. two cells, each with one nucleus B. two cells, each without a nucleus C. one cell with two identical nuclei D. one cell without a nucleus Which is the correct sequence for the stages of mitotic cell division represented by the diagrams shown? A. A! B! C! D B. A! C!D! B C. B! A! D! C D. B ! C ! D ! A A 22. B C D In the diagrams of mitotic cell division shown, which structure is present in diagram B but not in diagram A? A. centriole B. cell plate C. cell membrane D. cytoplasm page 4 Cell_Cycle_Practice 23. The diagrams shown represent stages of a cellular process. Which is the correct sequence of these stages? A. 24. A! B! C! D B. B! D! C!A C. C!B !D! A D. D ! B ! A ! C A photomicrograph of cells involved in various stages of nuclear division is shown. Which title is most appropriate for this photomicrograph? A. Mitosis in an Onion Root Tip B. C. Meiosis in Male Gametes D. Gametogenesis in Yeast Cells page 5 Cell Division in Human Blood Cells Cell_Cycle_Practice 25. The cell in the diagram below illustrates a stage of mitotic cell division. Letter B indicates the A. 26. C. cell plate D. endoplasmic reticulum reduction division B. mitotic cell division C. meiotic cell division D. nondisjunction nucleolus B. ribosome C. centriole D. centromere The diagram shown represents a microscopic structure observed during the process of cell division. Letter B indicates a A. 29. centrioles The diagram shown represents a microscopic structure observed during the process of cell division. Letter A indicates a A. 28. B. Normally, a complete set of chromosomes (2n) is passed on to each daughter cell as a result of A. 27. paired chromosomes centrosome B. spindle ber C. chromatid D. cell plate The mitotic cell division of tomato cells di ers from the mitotic cell division of earthworm cells in that dividing tomato cells A. form a spindle B. form a cell plate C. page 6 have centrioles D. have cell membranes Cell_Cycle_Practice 30. Which diagram most correctly represents the process of mitosis? A. B. C. page 7 D. Acces format version 4.4.170 c 1997–2011 EducAide Software _ Licensed for use by greg poruban Cell_Cycle_Practice 04/08/2013 1. Answer: C 21. Answer: B 2. Answer: D 22. Answer: B 3. Answer: C 23. Answer: C 4. Answer: A 24. Answer: A 5. Answer: C 25. Answer: B 6. Answer: C 26. Answer: B 7. Answer: B 8. Answer: 27. Answer: D B 9. Answer: 28. Answer: C B 10. Answer: 29. Answer: B D 11. Answer: 30. Answer: B B 12. Answer: C 13. Answer: C 14. Answer: A 15. Answer: C 16. Answer: A 17. Answer: A 18. Answer: D 19. Answer: A 20. Answer: C