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- 11. What moves the chromatids during mitosis? 12. What anchors the spindle? 13. What are the four phases of mitosis? 14. How many daughter cells are created from mitosis and cytokinesis? 15. During what phase does cytokinesis begin? 16. If a human cell has 46 chromosomes, how many chromosomes will be in ea daughter cell?13. The repeating unit a. in human DNA telomeres is TTTCAT b. in human DNA telomeres is TTACGG c. in human DNA telomeres is TTAGGG d. in humon DNA telomeres is TTACTC e. in humon DNA telomeres is TTAGGC 14. chromosomes in germ cells (egg ond sperm) a. germ cells don't replicate DNA b. do not get shorter with every division because they are not dividing C. get shorter with every division just like other cells d. do not get shorter with every division becouse the enzyme topoisomerase catalyzes the lengthening of topomers e. do not get shorter with every division becouse the enzyme telomerase catalyzes the lengthening of telomers 16. Mutagens a. gamma radiation b. All of these can be mutagens c. None of these are known to be mutagens d. Certain wavelengths of ultra violet light e. x-ray's 17. The genetic code has no redundancy but does have ombiguity b. has both redundancy and ombiguity c. has redundancy and not ombiguity d. has ambiguity e. has redundancy 19. During translation the…23. what stage of mitosis in which chromosomes begin to undergo a condensation process that will continue until metaphase?a. interphaseb. telophasec. prophased. prometaphase24. this stage of mitosis is characterized by an abrupt separation of sister chromatidsa. interphaseb. cytokinesisc. anaphased. prophase
- nase 4. Interphase occurs between mitotic divisions (inter- means between). What 3 phases of the cell cycle make up interphase? 5. Describe the major events of each stage of mitosis. A. Prophase- B. Prometaphase (or late prophase) - C. Metaphase D. Anaphase - E. Telophase - 6. When does cytokinesis occur in most types of cells relative to the stages of mitosis? - - ************* 4 1An organism s traits are determined by the specific combination of inherited. cells. genes. proteins. chromatids.The major microtubule organizing center of the animal cell is: a. chromosomes, composed of chromatids. b. the centrosome, composed of centrioles. c. the chromatin, composed of chromatids. d. chromosomes, composed of centromere. e. centrioles, composed of centrosome.
- 14. When the genetic materials are improperly replicated and error cannot be corrected the cell proceeds to: O A. Interkinesis B. Apoptosis C. Prophase I D. Mitotic division O E. Meiotic division 15. The frequency of mitosis would be greater in: O A. All types of cells B. Plant tissue than animal tissue C. Cells at the growing (meristematic) region of a plant than in other somatic (body) cells O D. Sex cells than somatic (body) cells E. Animal tissue than plant tissue O O O OO O OOOOon is a change in the DNA sequence. 0. The mRNA carries the information from the DNA to the ribosomes. 9. Mutation in eggs/sperms may not affect future generations by transmitting these changes in the offspring. 10. Mutation in non-sex (somatic) cells are hereditary. What’s In Activity 1. Analyze the diagram below and give your honest interpretation. DNA RNA PROTEIN nucleus cytoplasm Interpretation: 2.8. Select the statement that is FALSE: * O Some cells, like stem cells or skin cells, are constantly cycling, or progressing through the cell cycle. O Some cells, like newborn neurons, exit the cell cycle and enter GO, because they do not divide. O Some cells do not regularly divide but can be stimulated to divide by chemical signals called growth factors. Only some cells derive from a mitosis event.. A metastasis is : * A tumor that can grow indefinitely 1 pc The spread of calls from a tumor to a region of the body away from a primary tumor
- 8. Molecules outside and inside the cell regulate the cellcycle, making it start or stop.a. What is an example of an external molecule thatregulates the cell cycle?b. What is an example of a molecule inside the cellthat is involved in cell-cycle regulation?4. The diagram below shows cells in various phases of the cell cycle. Note the cells are not arranged in the order in which the cell cycle occurs. Use the diagram to answer the following questions. Phases of the Cell Cycle B E a. Which cell is in metaphase? b. Which cell is in the last phase of Mitosis? c. In cell A, what structure is labeled X? с. d. Which cell depicts the stage of mitosis that occurs prior to telophase? e. List the cell diagrams in order from first to last appearance in the cell cycle. f. Which of the cells, if any, is not part of mitosis?1. Which of the following describe the nuclear envelope? a. It is continuous with the endomembrane system b. It is continuous with the nucleolus c. It is continuous with the cell membrane d. It contains a cell membrane 2. During the cell cycle, when are chromosomes partitioned to daughter cells? a. G1 phase c. M phase b. G2 phase d. S phase 3. How do cancer cells differ from normal cells? a. invasiveness only – many normal cell types grow in an uncontrolled fashion b. interphase and M phase c. uncontrolled division and invasiveness d. uncontrolled division only – many normal cell types are invasive
