ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
Publisher: PEARSON
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Chapter 9.2, Problem 4CC
Compare the roles of tubulin and actin during eukaryotic cell division with the roles of tubulin-like and actin-like proteins during bacterial binary fission.
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You discover a substance that prevents the motor protein in a centromere from attaching to a spindle fiber. What would be a consequence of adding this substance to a cell during mitosis?
Group of answer choices
A) the chromatin would not coil up to form condensed chromosomes
B) the nuclear membrane would not break down
C) sister chromatids would not form
D) sister chromatids would fail to separate
List and describe the three main types of cytoskeleton. If you wanted to do immunocytochemistry to specifically stain each type of cytoskeleton, what is a protein that could be used for each cytoskeletal type (in other words, what is a unique protein for each cytoskeletal type)?
What are three types of actin structures? Describe the involvement of actin structures in cell migration.
How is the growth and shrinking of microtubules regulated? Then describe the roles of microtubules in: chromosomal separation during mitosis and the movement of organelles and vesicles within a cell.
Describe a possible mechanism on how signaling pathways might impact the cytoskeleton, so that cell migration could be regulated in a localized manner within a multicellular organism. (hint: think about the possible transcriptional regulation of the G-protein regulators)
What are 2 main challenges of protein targeting? Then describe one way these challenges are overcome during signal-based targeting and one way…
In some eukaryote organisms, myocytes are a type of stem cell that become Muscle cells. These cells filled with a protein called myosin. Such cell products are stored in cell structures that are formed from: A) the nucleus, B) from the smooth ER as vesicles, C) are engulfed into the cell by phagocytosis, D) are released from the cell by the process of Exocytosis, E) the lysosomes.
Chapter 9 Solutions
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
Ch. 9.1 - How many chromosomes are drawn in each part of...Ch. 9.1 - WHAT IF? A chicken has 78 chromosomes in its...Ch. 9.2 - How many chromosomes are shown in the drawing in...Ch. 9.2 - Compare cytokinesis in animal cells and plant...Ch. 9.2 - Prob. 3CCCh. 9.2 - Compare the roles of tubulin and actin during...Ch. 9.3 - Prob. 1CCCh. 9.3 - Prob. 2CCCh. 9.3 - Compare and contrast a benign tumor and a...Ch. 9.3 - Prob. 4CC
Ch. 9 - Through a microscope, you can see a cell plate...Ch. 9 - In the cells of some organisms, mitosis occurs...Ch. 9 - Which of the following does not occur during...Ch. 9 - Cell A has half as much DNA as cells B, C, and...Ch. 9 - The drug cytochalasin B blocks the function of...Ch. 9 - DRAW IT Draw one eukaryotic chromosome as it would...Ch. 9 - The light micrograph shows dividing cells near the...Ch. 9 - SCIENTIFIC INQUIRY Although both ends of a...Ch. 9 - FOCUS ON EVOLUTION The result of mitosis is that...Ch. 9 - FOCUS ON INFORMATION The continuity of life is...Ch. 9 - SYNTHESIZE YOUR KNOWLEDGE Shown here are two He La...
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- 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_forwardTelophase in Mitosis a ) Chromosomes begin to uncoil into chromatin. b) Nucleolus and nuclear membrane begin to reappear. c) Spindle slowly dissolves. d) In animal cells, cytokinesis occurs with a cleavage furrow dividing one cell into two cells. e) In plant cells, cytokinesis occurs with the formation of a cell plate. This plate divides the original cell into two cells and is part of the new cell wall.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 separation of the parent cell into two daughter cells fails to occur during the process of binary fission. Based on your knowledge of cell constriction in bacteria, what protein may be missing in the system (i.e the protein was not expressed)?arrow_forwardWhich of the following is found in binary fission but not in mitosis? a) duplicated chromosomes attach to the plasma membrane b) replicated strands of DNA seperate c) the result produces 2 nuclei d) following the process, a membrane seperates the 2 copies e) replication of DNA begins at an originarrow_forwardA 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 IIarrow_forward
- Across 18.) structure consisting mainly of microtubúles that provides the framework for chromosome movement during cell division 2. 3 14 15 17 19.) the stage of cell division in which the cytoplasm divides to fórm two daughter cells 18 9. 10 11 12 13 14 Down 15 16 17 10.) a pair of small cylindrical organelles lying at right angles to each other near the nucleus in the cytoplasm of animal cells 18 19 20 11.) positively, charged proteins around which DNA is packaged 14 ०botinn th Lronaatingarrow_forwardSuppose cells in an experiment had been labeled with green fluorescent tubulin. At the onset of Anaphase B, you use your laser to bleach a stripe across all of the microtubules on one side of the spindle as shown by the dashed line. This does not hurt the function of the microtubules in any way, but the bleached, nonfluorescent subunits in the microtubules now serve to mark a fixed location relative to the (+) and (-) ends. pl. membr. spindle A. Label one of each of the following: kinetochore MT, astral MT, polar MT. Indicate (+) and (-) ends. B. As the cell progresses through anaphase B, do the bleached spots get closer to, further from, or stay the same distance from the spindle pole they are embedded in? Why? Do they get closer to, further from, or stay the same distance from the plasma membrane? Why?arrow_forwarddescribe the process of dynamic instability of the microtubule.arrow_forward
- The mitotic spindle plays a critical role in which of the following processes? a) dissolving the nuclear membrane b) triggering the compaction and condensation of chromosomes c) splitting of the cell (cytokinesis) following mitosis d) separation of sister chromatidsarrow_forwardWhich is true of Prokaryote cells? A) Because their DNA exists in a nucleoid area, the synthesis of proteins depends on random interactions between mRNA and rRNA, B) They contain membrane-bounded compartments or organelles. C) A true nucleus contains the DNA in the form of chromosomes D) Some contain mitochondria E) They contain many organelles in the cytoplasmarrow_forwardThe endosymbiotic theory pertains to which organelle within eukaryotes because of the presence of 70S ribosomes, circular DNA, and the replication of this organelle independent from mitosis? O 1) nucleus O 2) lysosomes. O 3) golgi 4) endoplasmic reticulum 5: O 5) mitochondriaarrow_forward
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