7. A researcher examining a root tip observes a plant cell with condensed sister chromatids, kinetochores with attached microtubules, and individual chromosomes that are aligned at the equatorial plate of the cell. Which of the following best describes what the next process will be in the cell? (A) Homologous chromosomes (each with two sister chromatids) will move toward opposite poles of the cell. (B) Paired chromatids will separate, and the new daughter chromosomes will move toward opposite poles of the cell. (C) The nuclear envelope will break down, and the spindle will begin to form. (D) The chromatin will decondense, and the daughter cell will enter interphase.

7. A researcher examining a root tip observes a plant cell with condensed sister chromatids, kinetochores with attached microtubules, and individual chromosomes that are aligned at the equatorial plate of the cell. Which of the following best describes what the next process will be in the cell? (A) Homologous chromosomes (each with two sister chromatids) will move toward opposite poles of the cell. (B) Paired chromatids will separate, and the new daughter chromosomes will move toward opposite poles of the cell. (C) The nuclear envelope will break down, and the spindle will begin to form. (D) The chromatin will decondense, and the daughter cell will enter interphase.

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 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.
3. Identify the phase of mitosis that is being described by each statement. Some phases will be described by multiple statements. (P) Prophase _(PR) Prometaphase (M) Metaphase (A) Anaphase (T) Telophase Sister chromatids are pulled apart Chromosomes begin to disappear Nuclear envelope reforms Chromatids align in the center of the cell Chromatids attach to spindles Nuclear envelop breaks down Chromosomes condense and become visible Cell begins to split into daughter cells
1.What phase of mitosis is this? 2.What is the indicated structure 1? chromosome chromosome with two sister chromatids centrioles/centrosome spindle fibres metaphase plate 3.If the diploid (2n) number of this cell is 8 how many chromosomes are present Answer. 4.If the diploid (2n) number of this cell is 8 how many sister chromatids are present Answer. 5.If the diploid (2n) number of this cell is 8 how many homologous pairs are present Answer.
A researcher examining a root tip observes a plant cell with condensed daughter chromo- somes at each pole and a cell plate at the central plane of the cell. Which of the following best describes what will occur next in the cell? A The nuclear envelopes will break down, and the spindle fibers will begin to form. B с D Sister chromatids will align at the central plane via spindle fibers. The nuclear envelope will break down, and the spindle will begin to form. The chromosomes will decondense, and the daughter cells will enter the interphase.
This form of cell division involves segregation of sister chromatids. (Choose one answer.) O A) mitosis only O B) meiosis only C) both mitosis and meiosis D) neither mitosis or or meiosis CS Scanned with CamScanner
个 Following graph shows number of chromosomes (N) and amount of DNA (C) in a cell undergone different stage of cells cycle. 4C 30+ 2C C+2N 2N 2N 2N ABCDEFGH Phase Which amongst the following statements should be correct on the basis of above given information? I. C' represents the phase just before prophase. II. H represents haploid stage of cell. III. G stage of cell has double the number of chromosomes as compared to C' stage. IV. A cannot be represented as acquiescent stage.
4. Figure below shows drawings of a cell at various stages in the mitotic cell cycle. A B E (a) List the letters shown in figure above in the order in which these stages occur during a mitotic cell cycle. [2] (b) Explain what is happening in stage D in figure above. [2]
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.
The cell above is a lung cell of a salamander. In which stage of mitosis is it? What are the structures visible in green and blue fluorescence?
Figure 10.6 Which of the following is the correct order of events in mitosis? Sister chromatids line up at the metaphase plate. 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 spindle. 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 proteins. 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 spindle. Sister chromatids line up at the metaphase plate. Cohesin proteins break down and the sister chromatids separate. The nucleus reforms and the cell divides.
The mitotic spindles arise from which cell structure? centromere centroscme kinetochore cleavage furrow
When Paramecium conjugate: a. cytoplasmic division produces four daughter cells, eachhaving two micronuclei and two macronuclei. b. one haploid micronucleus in each cell remains intact; theother three degenerate. The micronucleus of each cell divides once, producing two nuclei, and each cell exchanges one nucleus with the other cell. In each partner the two micronuclei fuse, forming a diploid zygote micronucleus in each cell. c. the micronucleus of each of the disengaged partners divides meiotically. Macronuclei divide again in each cell, and the original micronucleus breaks down. Each cell has two haploid micronuclei; one of the macronuclei develops into a micronucleus. d. the mating cells join together at opposite sites of their oral depression. e. the micronucleus in each cell undergoes mitosis. When mitosis is complete, there are four diploid macronuclei; the micronucleus then breaks down.