WHAT IS LIFE? A GUIDE TO BIO 3E+LAUNCHPA
3rd Edition
ISBN: 9781319103316
Author: PHELAN
Publisher: Macmillan Higher Education
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Chapter 6, Problem 6MC
Summary Introduction
Introduction:
DNA is prominently visible only when it is in the form of chromosomes.
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In cell division, each chromosome is copied entirely.
a.) true
b.) false
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.
which of the following is not true about mitosis?
a.) chromosomes line up in metaphase by connecting to kinetechore proteins
b.) the process starts out as a diploid cell
c.) dna replicates in M phase
d.) cells can be 4n if cytokenisis does not occur at the end
Chapter 6 Solutions
WHAT IS LIFE? A GUIDE TO BIO 3E+LAUNCHPA
Ch. 6 - Prob. 1SACh. 6 - Prob. 2SACh. 6 - Prob. 3SACh. 6 - Prob. 4SACh. 6 - Prob. 5SACh. 6 - Prob. 6SACh. 6 - Prob. 7SACh. 6 - Prob. 8SACh. 6 - Prob. 9SACh. 6 - Prob. 10SA
Ch. 6 - Prob. 11SACh. 6 - Prob. 12SACh. 6 - Prob. 13SACh. 6 - Prob. 14SACh. 6 - Prob. 15SACh. 6 - Prob. 16SACh. 6 - Prob. 17SACh. 6 - Prob. 1MCCh. 6 - Prob. 2MCCh. 6 - Prob. 3MCCh. 6 - Prob. 4MCCh. 6 - Prob. 5MCCh. 6 - Prob. 6MCCh. 6 - Prob. 7MCCh. 6 - Prob. 8MCCh. 6 - Prob. 9MCCh. 6 - Prob. 10MCCh. 6 - Prob. 11MCCh. 6 - Prob. 12MCCh. 6 - Prob. 13MCCh. 6 - Prob. 14MCCh. 6 - Prob. 15MCCh. 6 - Prob. 16MCCh. 6 - Prob. 17MC
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- 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_forwardA cell is shown during the anaphase stage of mitosis. Which of the following statements best explains what would be different if the diagram showed anaphase I of meiosis instead of anaphase of mitosis? Select one: a. Homologous chromosomes would be moving to the same end of the cell. b. Homologous chromosomes would form a tetrad. c. Each chromosome would have two sister chromatids. d. The sister chromatids would be pulled apart.arrow_forwardUsing the symbols above: 1. Given: Adult diploid cell (2n = 8) 2. Show the condition of the chromosomes in the following Mitosis phases (illustrate): a. prophase b. metaphase c. anaphase d. telophase/cytokinesisarrow_forward
- The following diagram is meant to help you understand how the amount of DNA in a cell changes as the cell cycle progresses. On the diagram, identify two of the stages of the cell cycle being described and identify how much DNA exists per cell, where a cell is defined as a distinct nucleus. Note that the sequence of images highlights one of the chromosomes of the cell. The other chromosomes, while also present, are faded in the background. Stage in Cell Cycle: A Status of Chromosomes: (Only one of the chromosomes is intensely colored) NANA INNNNNNN wwwww wwwNYA wwwww WXXXX VANNNNNN www Amount of DNA Per Cell: C NNNNA NNNNNN WWXXXXX NNNNNNE WNNNN www B NNNNN Between 1X and 2X 2X D 1Xarrow_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_forward1) Examine the picture of an onion root tip with cells in various stages of the cell cycle. A student claims that interphase is the longest stage of the cell cycle. Another student claims that mitosis is the longest stage. Using evidence from the photo, determine which student is correct and why. A) Mitosis is the longest stage because anaphase requires more time to separate chromatids. B) Interphase is the longest stage because chromosomes are visible in the majority of the cells. C) Mitosis is the longest stage because the majority of the cells in the photo are replicating their DNA. D) Interphase is the longest stage because the majority of the cells in the photo have uncondensed chromatin and are not dividing. Not Gradedarrow_forward
- Match the stage of mitosis with the correct description. a.Microtubles that are attached to each chromosome shorten, pulling the sister chromatids apart. b.The chromosomes line up single file in the middle of the cell. Sister chromatids are clearly visible in this stage. c.The chromosomes that were pulled apart reach therir respective poles. The chromosomes decondense. The nuclear envelope re-forms. The cytoplasm with organelles divides. d.Chromosomes have replicated and appear as an "X". The nuclear envelope begins to break down. The chromosomes begin to condense into individual structures. e.Centrosomes move to the opposite ends of the cell and establish two spindle poles.The nuclear envelope is completely degraded by the end of this stage. The chromosomes are completely consensed by the end of this stage. f.Not actually part of mitosis; this stage is the part of the cell cycle that is not the mitotic phase. DNA is decondensed and appears diffuse throughout the…arrow_forwardA bivalent consists of: A Two chromatids and one centromere B Four chromatids and two centromeres C Two chromatids and two centromeres D Four chromatids and four centromeresarrow_forwardMatch the descriptions below with the following stages of mitosis, in the correct order:Prophase; Anaphase; and Cytokinesis.A. Centrioles are found at the poles; Microtubules attach to centromeres; ChromosomescondenseB. Chromosomes align along the metaphase plate; Chromosomes split at the centromere;Microtubules attach to centromereC. Chromosomes shorten and thicken; Chromosomes split at the centromere; Cytoplasm dividesD. Centrioles are found at the poles; Chromosomes split at the centromere; Chromosomes arriveat opposite polesE. Chromosomes shorten and thicken; Chromosomes arrive at opposite poles; Cytoplasmdividesarrow_forward
- The same chromosome can look very different depending on when in meiosis it is observed. Explain fully why this is so and also why the chromosome is less condensed during some parts of the cell cycle? How many DNA molecules does each chromosome contain at the beginning of Prophase I? Use the following terms in your explanation: chromatin, histone, chromatid, centromere.arrow_forwardWhich of the following is/are reason(s) that sells an organism would undergo mitosis? A. During organismal growth(for multicellular organisms). B. During wound heal. C. When mutation develop in genes that caused the cell to self-destruct. D. To make haploid gametes.arrow_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
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