Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 12, Problem 9TYK
Summary Introduction
Introduction: Cytokinesis is the process by which the cytoplasm of a cell divides to form two daughter cells. Cytokinesis in plant and animal cells differs slightly. The main difference is due to the presence of a cell wall in plants, which is absent in the animals.
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Which of the following statements about mitosis is incorrect?
a. Microtubules from the spindle poles attach to the kinetochores on the chromosomes.
b. In anaphase, the spindle separates sister chromatids and pulls them apart.
c. In metaphase, spindle microtubules align the chromosomes at the spindle midpoint.
d. Cytokinesis describes the movement of chromosomes.
e. Both the animal cell furrow and the plant cell plate form at their former spindle midpoint.
Which of the following statements is FALSE?
A.
Centrosomes are anchor points for microtubules and are essential to form the mitotic spindle.
B.
In the eukaryotic cell cycle the cell spends much more time in the interphase than in the mitotic phase.
C.
In telophase two nuclear envelopes are fully formed and the cell splits in two via cytokinesis.
D.
The contraction of the kinetochore microtubules leads to the separation of the sister chromatids during anaphase.
E.
In the prophase chromatin condenses into X-shaped chromosomes.
Part of cell division is that chromosomes are moved the center of the cell and then back to the poles of each newly made daughter cell. These chromosomes are moved to the center of the cell by..
Select one:
a. Myosin walking on microtubules towards the center of the cell (slow growing end of microtubule)
b. Oar-like motion of myosin with microfilaments causing each half of the cell to move closer together
c. kinesins walking on microtubules towards the center of the cell (fast growing end of microtubule)
d. vesicles floating on microfilaments of the cortical cytoskeleton
Chapter 12 Solutions
Study Guide for Campbell Biology
Ch. 12 - a. How many chromosomes are in your somatic cells?...Ch. 12 - a. What event is common to all three subphases of...Ch. 12 - The following diagrams will depict the five stages...Ch. 12 - a. What is MPF? b. Describe the relative...Ch. 12 - In the following photomicrograph of onion root tip...Ch. 12 - Describe one chromosome as it proceeds through an...Ch. 12 - Draw a sketch of one half of a mitotic spindle....Ch. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - Prob. 3TYKF
Ch. 12 - Prob. 4TYKFCh. 12 - Prob. 5TYKFCh. 12 - Prob. 6TYKFCh. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - Prob. 8TYKFCh. 12 - Prob. 9TYKFCh. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - One of the differences between prokaryotic binary...Ch. 12 - Prob. 2TYKCh. 12 - Prob. 3TYKCh. 12 - Prob. 4TYKCh. 12 - Prob. 5TYKCh. 12 - In eukaryotic organisms, chromosomes are...Ch. 12 - Prob. 7TYKCh. 12 - Prob. 8TYKCh. 12 - Prob. 9TYKCh. 12 - Prob. 10TYKCh. 12 - During cell division, cyclin combines with...Ch. 12 - Prob. 12TYKCh. 12 - Prob. 13TYKCh. 12 - Prob. 14TYKCh. 12 - Vinblastine is a chemotherapeutic drug used to...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In the mitosis experiment, in what stage were most of the onion root tip cells in? Based on what you know about cell cycle division, what does this imply about the life span of a cell? Were there any stages of the cell cycle that you did not observe? How can you explain this using evidence from the cell cycle?arrow_forwardWhich of the following occurs during metaphase II? A. The chromosomes align midway between spindle poles. B. The sister chromatids separate and move toward the spindle poles. C. Spindle microtubules attach to each sister chromatid as the nuclear envelope breaks up. D. A nuclear envelope forms around each set of chromosomes to form four haploid nuclei.arrow_forwardIn the image, you can see one cell that is in the process of mitosis. (Note that chromosomes are stained dark blue.) In which stage is this cell currently? A. Telophase B. Metaphase C. Interphase D. Prophase E. Cytokinesis F. Anaphasearrow_forward
- The metaphase to anaphase transition involves a. new force being generated to pull the chromatids apart. b. an increase in force on sister chromatids to pull them apart. c. completing DNA replication of centromeres allowing chromosomes to be pulled apart. d. loss of cohesion between sister chromatids.arrow_forwardA parent cell divides to form two genetically identical daughter cells in the process of mitosis. For mitosis to take place: A. the parent cell must divide its DNA in half so each daughter cell gets only the genes needed to carry out its functions. In this way, differentiation occurs. B. the parent cell must reproduce its DNA during telophase C. the parent cell must first be fertilized D. the parent cell must replicate its entire genome prior to mitosis E. crossover must be delayed until the second cell divisionarrow_forwardWhich of the following statements are true (Select all that apply) A. The nuclear envelope dissolves in the metaphase and reforms in telophase B. In prophase, chromosomes condense into compact structures C. The spindle forms and attaches to chromosomes in prometaphase D. In anaphase, each sister chromatid moves toward the spindle pole to which it is attached.arrow_forward
- With regard to the process of mitosis, which of the following pairs is NOT matched correctly? a. Interphase - the cell grows, chromosomes replicate, and proteins are produced to prepare the cell to divide Ob. Prophase - chromosomes condense, and the nuclear membrane dissociates/breaks down c. Metaphase - chromosomes move toward opposite poles (or sides) of the cell d. Anaphase - sister chromatids separate e. Telophase - two distinct nuclei are formed; this is the stage immediately before cytokinesis O O Oarrow_forwardBelow are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a.The role of centrosomes in the plant cell is not clear since it can proceed cell division with or without it. b.The central vacuole's function includes serving as a lysosome in the plant cell. c.Metabolic processes in the prokaryotic cell are all done in its cytoplasm.arrow_forwardPart of G1 is for the cell to enlarge, this growth can cause internal signaling from desmosomes which may stop cell division. What is the connection between desmosomes and progression of the cell cycle? Select one: a. Desmosomes are linked to the MPF. When the cell grows it will turn on the MPF through the desmosomes which will turn off the APC, stopping cell division. b. Desmosomes have nothing to do with regulating the cell cycle. c. Desmosomes are linked to microfilaments that make up the cellular cortex. When pulled, they stop kinesins from walking on microtubules, halting cell division. d. Desmosomes are connected to intermediate filaments (the skeleton of the cell). As the cell grows, if the cell receives signals (mechanical through touching) from the desmosomes that there are cells on all sides, this will halt cell division at the G1 checkpoint as part of density-dependent inhibition.arrow_forward
- 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.arrow_forwardTwo cells from an animal’s heart are removed and studied. One cell has twice the amount of DNA as the other cell. Which statement is best explains why the second cell has twice the amount of DNA as the first? A The cell is in G1 and the extra DNA is needed now that the cell entering mitosis. B The cell is in G2 of interphase and now has all the DNA it needs function correctly. C The cell has just gone through S phase of interphase and will eventually divide in mitosis. D The cell is in G0 and no longer in a dividing state and has all the DNA needs to function correctly.arrow_forwardWhen does cell plate form during cell division. A. At the completion of animal cells- mitosis during cytokinesis B- at the completion of plant cell mitosis- during cytokinesis C- during interphase D- in the middle of animal cell mitosisarrow_forward
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cell division of meiosis and mitosis; Author: Stated Clearly;https://www.youtube.com/watch?v=A-mFPZLLbHI;License: Standard youtube license