The primary function of Asters in mitosis is Select one: O a. The production of microfilaments spindles to separate the two sister chromatids O b. The formation of microfilaments needed to hold chromosomes O C. The formation of microtubule spindles to separate the daughter chromosomes O d. The dissociation of the nuclear envelop O e. Formation of a cleavage furrow

The primary function of Asters in mitosis is Select one: O a. The production of microfilaments spindles to separate the two sister chromatids O b. The formation of microfilaments needed to hold chromosomes O C. The formation of microtubule spindles to separate the daughter chromosomes O d. The dissociation of the nuclear envelop O e. Formation of a cleavage furrow

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter11: How Cells Reproduce

Section: Chapter Questions

Problem 15SA: Match each stage with the events listed. ___ metaphase a. sister chromatids move apart ___ prophase...

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Match the following events with the stages in mitosis: chromosomal materials condenses to form compact chromosomes. alignment of chromosomes along the equator or plate with microtubules attached to poles sister chromatids for each chromosome split and move to opposite poles chromosomes are clustered at each of the poles and give way to cytokinesis A. telophase B. anaphase C. metaphase D. prophase
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The diagram below shows a model for the normal regulation of the transition to anaphase during mitosis. 1. Signals are released by unattached kinetochores that cause MAD to bind CDC20. MAD CDC20 6. Chromatids separate as mitosis procoeds to anaphase. COHESIN 3. The APCCDC20 CDC20 complex ubiquinates Securin. APC 2. When all kinetochores are attached, MAD releases CDC20 which then combines with APC UBIQUITIN SEPARASE . Separase destroys Cohesin APC SEPARASE SECURIN 4. Securin is destroyed, releasing Separase Your analyses of cancer cells that do not regulate this transition normally indicate that: MAD is binding to CDC20; • Ubiquitin is not attached to securin; • Sister chromatids separate and move to opposite poles of the cell. Which of the following explanations could account for all of your observations? a. The cell has an alteration in MAD that prevents it from releasing CDC20 when the 'unattached kinetochore' signal stops. O b. More than one of the other answer choices are correct.…
In what stage of mitosis is the cell labeled "A"? A shutterstock B www.shutterstock.com 159810452 O prophase O telophase anaphase O metaphase
of my celle chose are wels smaller than normal. According to Model 1, what part(e) of the cell cycle is (ere) ou likely being affected? Some cancerus me 7. In Model 1, if the length of the arrow represents time, then for those cancerous cells, what hap pens to the time that is necessary for the cell cycle? What implication might this have for doctors who are treating cancer patients? Why? Living things must grow and develop. At times they suffer injuries or damage, or cells simply wear out. New cells must be formed for the organism to survive. What process must occur to make a new, properly- functioning cell? Model 1 - Mitosis as Part of the Cell Cycle Prophase Metaphase Anaphase Mitosis How do living things grow and repair themselves! Replicated chromosome (2 sister chromatids) 0000 * Centriole Spindle fibers Nuclear membrane Telophase 1. Refer to Model 1. List the four phases in the mitosis process. 2. Where is mitosis in the cell cycle? Before 3. What three phases of the cell cycle…
Illustrate the prophase2 of mitosis
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
Write the phase of mitosis that matches each phrase:a. Nuclear envelope disappearsb. Chromosome are first visiblec. Nuclear envelope reformsd. Chromosomes move towards opposite poles of the celle. Spindle fibers appearf. Cytoplasm dividesg. Sister chromatid, line up along equator of the cell
Prophase is the stage of mitosis characterized by the a. physical seperation of sister chromatids b. appearance of visible chromosomes c. occurrence of cytokinesis d. alignment of chromosomes at center of cell
What celluar events/processes are associated with G1,S,G2,and M phases of the cell cycle? With the phases of mitosis? Some example: A. DNA replication B. Beginning of mitosis C. Normal cell growth and function D. Breaksdown of nuclear membrane E.Separation of sister chromatids F.Alignment of chromosomes on the equator of the cell H.Triggering the compaction and condensation of chromosomes I. Attachment of microtubles to kinetochores
Which statement about the daughter cells of mitosis is correct? O A. They are genetically identical to one another and to the parent cell. O B. They are derived from the polar bodies during cell divison O C. They are genetically identical to one another but are different from the parent cell. O D. They differ genetically from one another and from the parent cell O E. Only one of the two daughter cells is genetically identical to the parent cell. A Moving to another question will save this response.