Which of the following best describes the kinetochore? the core of proteins that forms the metaphase plate in a dividing cell O a structure composed of several proteins that associate with the centromere region of a chromosome and that can bind to spindle microtubules the ring of actin microfilaments that will cause the appearance of the cleavage furrow the centromere region of a metaphase chromosome at which the DNA can bind with spindle proteins

Which of the following best describes the kinetochore? the core of proteins that forms the metaphase plate in a dividing cell O a structure composed of several proteins that associate with the centromere region of a chromosome and that can bind to spindle microtubules the ring of actin microfilaments that will cause the appearance of the cleavage furrow the centromere region of a metaphase chromosome at which the DNA can bind with spindle proteins

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter10: Cell Reproduction

Section: Chapter Questions

Problem 1VCQ: Figure 10.6 Which of the following is the correct order of events in mitosis? Sister chromatids line...

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During anaphase of Mitosis, how do the chromosomes travel to the opposite ends of a dividing cell? O the centrosomes are constantly digesting spindle fibers making it shorter pulling the chromosomes nearer to the opposite ends of the cell the chromosomes are constantly traveling down the spindle fibers by digesting the fibers at the kinetochore O the chromosomes are twisting the spindle fibers making it shorter so that they may travel closer to the centrosome the centrosomes "reel" in the chromosomes using the attached spindle fibers
Which of the following is an abnormality that can delay the metaphase-to-anaphase transitions?Attachments of both kinetochores to microtubules from the same spindle poleA failure of one kinetochore to attach to spindle microtubulesA mutation that inhibits the activity of the APCA lack of tension at the kinetochore
During metaphase, what may happen if spindle fibers (kinetochore microtubules) will not be attached at the centromere via the kinetochore? the cell will be arrested at G zero phase the DNA will be fully distributed to all daughter cells O the number of DNA will be divided to two daughter cells One of the daughter cells may not contain any DNA at all
Which phase is described below? The chromosomes condense, Each is made of two sister chromatids,(looks) like an "X" Each sister is a clone, the closest of kin, And acentromere connects them like siamese twinsThe nucleolus disappears it melts away, as the cell takes a ribosomeproduction holiday, the centrosomes separate, start spindle formationfor separating chromatids and cell elongation.
In Coleus , the somatic cells are diploid with 24 chromosomes. How many of each of the following is present in each cell at the stage of mitosis and meiosis indicated below? kinetochore at prophase chromosomes at anaphase chromatids at metaphase 1 chromosomes at telophase after cytokinesis centromeres at anaphase chromosomes at telophase II after cytokinesis centromere at anaphase I chromatids at metaphase
Which of the following facilitate chromosome separation during anaphase of mitosis? All of these facilitate chromosome separation. kinesin 13 - directed kinetochore microtubule depolymerization kinetochore microtubule shrinkage at the plus end dynein-dynaction motor protein- directed forces ◄ Previous Next ▸ (6L) NI S'8 X NI S'S SHO
Imagine that a cell contains a temperature-sensitive mutation such that nuclear lamins cannot be phosphorylated at the restrictive temperature. Describe the phenotype of the mutant cells during mitosis at the restrictive temperature. O The mutant cells will not be able to decondense chromosomes and will be arrested in prophase O The mutant cells will not be able to assemble the mitotic spindle and will be arrested in metaphase O The mutant cells will not be able to disassemble the nuclear envelope and will be arrested in prophase The mutant cells will go through multiple mitotic cycles without cytokinesis and will become multi-nucleated The mutant cells will be unable to reassemble the nuclear envelope and will be arrested in telophase
During meiosis, homologous sets of four chromatids are lined up along the cell's equator, attached to spindle fibers. Which of the following processes will happen next? Top of Form Anaphase I Telophase II Prophase I Metaphase II
Taxol is an anticancer drug extracted from the Pacific yew tree. In animal cells, Taxol disrupts microtubule formation. Surprisingly, this stops mitosis. Specifically, Taxol must affect formation of the centrioles the structure of the mitotic spindle chromatid assembly anaphase O00O
Which of these is occurring during the mitotic step shown here? The nuclear membrane breaks down. The sister chromatids line up at the center of the cell. The chromosomes begin to uncoil as the nuclear membrane reassembles around them. Cytoplasm is divided into the two daughter cells. The sister chromatid pairs are pulled apart by the spindle fibers.
The centromeric connections between chromatids fail to be severed. Kinetochores from sister chromatids become attached to microtubules from the same pole. A motor protein at the kinetochore is not functional. The chromosomes fail to attach to the kinetochore microtubules. Chromosomes will not move to the metaphase plate. Chromatids will not separate during anaphase. One kinetochore will detach from the spindle. Chromosomes will not move toward centrosome during prometaphase.
Which of the following marks an important event during telophase? O nuclear envelope starts to reappear movement of chromosomes at the opposite poles O movement of chromosomes at the metaphase plate chromosome condensation ооо