SimUtext Biology mitosis

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SimUtext Biology mitosis guess which of the following life processes involves mitosis? answer is all - ANS - *healing a broken bone. *long-term acclimation to a higher altitude (increasing the red ... blood cell count). *baking bread *getting over the flu. when does the cell replicate its DNA? - ANS - Before mitosis begins. which pair of daughter cell (A, B, or C) would be produced by mitosis? (For clarity, DNA in daughter cells is shown in condensed chromosomes.) - ANS - C which is the correct order of events in mitosis? - ANS - condense DNA, dissolve nuclear envelope, separate sister chromatids, cytokinesis. In the simulation, why is it necessary to physically separate sister chromatids with your mouse so that they're on opposite side of the cell? - ANS - If sister chromatids aren't on opposite of the cell the daughter cells could end up with very different DNA. try the simulation without dissolving the nuclear envelope. One other mitosis event does not occur properly. Which is it? - ANS - Moving sister chromatids to opposite sides of the cell. which of the following occurs in plant cells but not animal cells during mitosis? a. nuclear envelope dissolves b. cell membrane pinches inward to form daughter cells during cytokinesis. c. the cell wall is constructed during cytokinesis. d. DNA is replicated - ANS - The cell wall is constructed during cytokinesis human cells have 46 condensed chromosomes at the start of mitosis. how many sister chromatids are passed on to each daughter cell? - ANS - 46 human cells have 46 condensed chromosomes at the start of mitosis. how many DNA molecules are in a cell at the start of mitosis? - ANS - 92 Which of the following statements is true? A. all chromosomes have equivalent DNA to all other chromosomes. B. All sister chromatids have equivalent DNA to all other sister chromatids. C. Chromosomes condense after the nuclear envelope dissolves. D. each chromosome is composed of two sister chromatids that have equivalent DNA. - ANS - each chromosome is composed of two sister chromatids that have equivalent DNA. which of the following occur during mitosis? A. replication of the cell's DNA B. substantial cell growth. C. division of the cell into two daughter cells with equivalent DNA D. DNA coils into condensed chromosomes. - ANS - C. and D. in which phase is the nuclear envelope ABSENT ( for part of all of the phases)? A. prophase B. prometaphase C. metaphase D. Anaphase E.Telophase - ANS - b. c. d. e. DNA is in its condensed form during every phase of mitosis. - ANS - true, DNA is condensed during prophase, and it decondenses during telophase. So, chromosomes are in condensed form during some part of the phase of mitosis. In which phases are the condensed chromosomes or sister chromatids attached to the spindle? - ANS - In which phases are the condensed chromosomes or sister chromatids attached to the spindle? a. prophase b. prometaphase c.metaphase d. anaphase e.telophase - ANS - b. c. d. e. when are the chromosomes aligned at the midline of the cell? - ANS - begininning in metaphase metaphase, through the start of anaphase. To how many spindle poles is each condensed chromosome attached in metaphase? - ANS - 2 what would happen if the spindle stopped working during anaphase? - ANS - sister chromatids would not move. why does the nuclear envelope dissolve during mitosis? a. the nuclear envelope is a barrier between the spindle and the chromosomes. b. the nuclear envelope would block movement of chromosomes, especially during anaphase and telophase. c. the spindle could not form with the nuclear envelope present. - ANS - b. c. because: the nuclear envelope is impenetrabl [Show More]

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