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 pole A failure of one kinetochore to attach to spindle microtubules A mutation that inhibits the activity of the APC A lack of tension at the kinetochore

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 pole A failure of one kinetochore to attach to spindle microtubules A mutation that inhibits the activity of the APC A lack of tension at the kinetochore

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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Which types of microtubules are essential for the major events occurring during anaphase B ? A. Inter-polar and astral.B. Kinetochore and astral.C. Astral only.D. Kinetochore and inter-polar.E. Kinetochore only.
Which of these is paired incorrectly?a. prometaphase—the kinetochores become attached tospindle fibersb. anaphase—daughter chromosomes migrate toward spindlepolesc. prophase—the nucleolus disappears and the nuclearenvelope disintegratesd. metaphase—the chromosomes are aligned in the metaphaseplatee. telophase—a resting phase between cell division cycles
Mad protein accumulates on the kinetochores that are not attached to mitotic spindle during metaphase. What do you expect when Mad protein accumulation is artificially inhibited? lack of nuclear envelop in one of the daughter cells, sustained levels of mitotic cyclins in daughter cells. incomplete cytokinesis leading to multinucleated cell formation. increased risk of aneuploid in daughter cells. The optical resolution in fluorescence microscopy.... is enough to observe a single protein molecule. describes the ability to resolve details in the object that is being imaged. can be enhanced unlimitedly using higher magnification lens. is higher when using longer wavelength light.
Which of the following occurs during metaphase I? A. Homologous chromosomes pack tightly, pair up, and swap segments. B. Homologous chromosome pairs are aligned midway between spindle poles. C. The spindle separates the homologous chromosomes and moves them toward opposite spindle poles. D. A complete set of chromosomes cluster at each cell end, and two haploid nuclei are produced.
The figure above shows a metaphase in which one chromosome is only connected to the spindle by a single kinetochore, thus the sister chromatids may not separate correctly during anaphase. which of the following statement/s is/are correct;
which of the following represents the amount of DNA in a typical human somatic Cell at the G2 stage of the cell cycle?n= number of chromosomes n 2n 4n 8n
Figure 6.4 Which of the following is the correct order of events in mitosis?a. Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the mitotic spindle. The nucleus re-forms and the cell divides. The sister chromatids separate.b. The kinetochore becomes attached to the mitotic spindle. The sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus re-forms and the cell divides.c. The kinetochore becomes attached to metaphase plate. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus re-forms and the cell divides.d. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. The kinetochore breaks apart and the sister chromatids separate. The nucleus re-forms and the cell divides.
Which of the following is the correct order of events in mitosis? 1. Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the mitotic spindle. The nucleus re-forms and the cell divides. The sister chromatids separate. 2. The kinetochore becomes attached to the mitotic spindle. The sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus re-forms and the cell divides. 3. The kinetochore becomes attached to metaphase plate. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus re-forms and the cell divides. 4. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. The kinetochore breaks apart and the sister chromatids separate. The nucleus re-forms and the cell divides.
The assembly and function of the mitotic spindle depend on numerous microtubule-dependent motor proteins. In the mitotic spindle, these motor proteins generally operate at or near the ends of the microtubules. Four major types of motor proteins are:
What occurs during metaphase phase of mitosis? A. Microtubules can be lengthened by adding subunits at the + end to move chromosomes towards the metaphase plate B. Microtubules can be shortened to move chromosomes towards the metaphase plate. C. Motor proteins pull chromosomes along the microtubules to move them towards the metaphase plate. D. All of the above E. None of the above
Which of the following is the correct order of events in mitosis? (Arrange accordingly) Sister chromatids line up at the metaphase The kinetochore becomes attached to the mitotic spindle. The nucleus reforms and the cell divides. Cohesin proteins break down and the sister chromatids separate. The kinetochore becomes attached to the mitotic Cohesin proteins break down and the sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus reforms and the cell divides. The kinetochore becomes attached to the cohesin Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus reforms and the cell divides. The kinetochore becomes attached to the mitotic Sister chromatids line up at the metaphase plate. Cohesin proteins break down and the sister chromatids separate. The nucleus reforms and the cell divides. Chemotherapy drugs such as vincristine and colchicine disrupt mitosis by binding to…
which of the following events occurs during anaphase B in a mitotic cell a. lengthening of the overlap microtubules b. Shortening of the overlap microtubules c. Shortening of the overlap microtublues d. Shortening of the astral microtubules e. Lengthening of the kinetochore microtubules