Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 9, Problem 4RQ
Define the following terms: centromere, telomere, kinetochore, chromatid, and spindle.
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A cell in G1 of interphase has 8 chromatins. How many chromosomes and how many DNA molecules will be found per cell as this cell progresses through the following stages:
a) metaphase
b) anaphase
c) after cytokinesis in mitosis
d) metaphase I
e) anaphase I
f) metaphase II
g) anaphase II
h) after cytokinesis of meiosis II
Draw a single duplicated chromosome, labeling the chromatid(s) and centromere
Differentiate centromere, centrosomes, centrioles, and kinetochore. Explain in a detailed manner. Provide some sample scenarios.
Chapter 9 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 9.1 - describe the types of cells found in a...Ch. 9.1 - describe the functions of cell division in...Ch. 9.2 - describe the prokaryotic cell cycle and the major...Ch. 9.3 - describe the structure of a eukaryotic chromosome?Ch. 9.3 - describe the functions of telomeres and...Ch. 9.4 - Body, Heal Thyself Ligaments and tendons have a...Ch. 9.4 - describe the events of the eukaryotic cell cycle?Ch. 9.4 - explain the difference between mitotic cell...Ch. 9.5 - Body, Heal Thyself The precision of mitotic cell...Ch. 9.5 - describe the steps of mitotic cell division?
Ch. 9.5 - What would the consequences be if one set of...Ch. 9.5 - describe the usual outcome of mitotic cell...Ch. 9.5 - Prob. 3CYLCh. 9.6 - Body, Heal Thyself Bartolo Colns physicians wanted...Ch. 9.6 - Prob. 1CTCh. 9.6 - describe the interactions among growth factors,...Ch. 9.6 - Yesterday, when Daniel was showering after a...Ch. 9.6 - The saliva of dogs, like the saliva of most...Ch. 9.6 - What would happen if a cell suffered a mutation...Ch. 9.6 - explain how a cell protects against producing...Ch. 9 - Most nerve cells in the adult human central...Ch. 9 - The genetic material of all living organisms is...Ch. 9 - A cell that remains capable of dividing throughout...Ch. 9 - Diagram and describe the eukaryotic cell cycle....Ch. 9 - Prob. 2ACCh. 9 - Prokaryotic cells divide by a process called...Ch. 9 - Prob. 2MCCh. 9 - Prob. 2RQCh. 9 - Prob. 3FIBCh. 9 - Prob. 3MCCh. 9 - Prob. 3RQCh. 9 - Prob. 4FIBCh. 9 - How does prokaryotic fission differ from...Ch. 9 - Define the following terms: centromere, telomere,...Ch. 9 - The four phases of mitosis are _________,...Ch. 9 - Prob. 5MCCh. 9 - Prob. 5RQCh. 9 - Prob. 6FIBCh. 9 - Prob. 6RQCh. 9 - Prob. 7RQ
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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
- Define these terms: kinetochore, centromere, unduplicated chromosome, duplicated chromosome, sister chromatid.arrow_forwardKinetochores are the a) sites of spindle fiber attachment to chromosomes. b) regions where two chromosomes remain attached during mitosis. c) same as centromeres. d) structures that give support to the nuclear membranearrow_forwardSketch a mitotic prophase chromosome and label sister chromatids, sister centromeres, and sister kinetochores.arrow_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_forwardThis 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 CamScannerarrow_forwardCan be more than one answer: Select all of the following that are true of MEIOSIS but not of MITOSIS. a) cell division occurs during cytokinesis b) results in two identical daughter cells c) halves the number of chromosomes in a cell d) spindle fibers contract during anaphase e) tetrads line up on metaphase platearrow_forward
- Human cells normally have 46 chromosomes. For each of the following stages, state the number of chromosomes and the number of DNA molecules found in these chromosomes that are present in a human cell. a) Metaphase of mitosis Metaphase I of meiosis c) Telophase of mitosis (after cytokinesis)arrow_forwardName the phases of the cell cycle. b) During which phases are the chromosomes and then the cytoplasm split, respectively? c) Describe one mechanism that is used to regulate the cell cycle.arrow_forwardWhich of the following best describes the difference between interphase and mitosis? a) During interphase, DNA has a loose structure that condenses during mitosis. b) During interphase, histones help compact DNA into chromosomes. And once mitosis starts, histones are destroyed. c) During interphase, DNA is tightly packed into chromosomes that uncoil once mitosis starts. d) During interphase, DNA is packed as chromosomes. And during mitosis, DNA is called chromatin. Please I need a surely answer and a quicker responsearrow_forward
- The interphase is the part of the eukaryotic cell cycle that is most transcriptionally active. Gene regulation during this phase involves changes in the chromatin. a) What is chromatin? b) How can the chromatin structure change?arrow_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_forwardA cell in G1 of interphase has 12 chromosomes. How many chromosomes and DNA molecules (chromatids) will be found per cell when this original cell progresses to the following stages? a) G2 of interphaseb) Metaphase I of meiosisc) Prophase of mitosisd) Prophase II of meiosise) After cytokinesis following mitosis f) After cytokinesis following meiosisarrow_forward
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