Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 5TYU
The drug cytochalasin B blocks the function of actin. Which of the following aspects of the animal cell cycle would be most disrupted by cytochalasin B?
- A. spindle formation
- B. spindle attachment to kinetochores
- C. cell elongation during anaphase
- D. cleavage furrow formation and cytokinesis
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Students have asked these similar questions
Which of the following statements about the cell cycle is TRUE?
a. The protein APC blocks cells from entering anaphase
b. CDKs are degraded after each cell cycle phase by the addition of a ubiquitin chain to the proteins
c. A kinase is a protein that adds a ubiquitin chain to other proteins Cyclin activity is necessary, but not always sufficient, for CDK activation
d. Cyclin proteins must be degraded before Cdk proteins can be activated
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.
DNA or deoxyribonucleic acid is the hereditary material in humans and almost all other organisms. Nearly every cell in a person's body has the same DNA. This, in turn, replicates in the non-dividing phase of the cell cycle which is
a. telophase
b. cytokinesis
c. metaphase
d. interphase
Chapter 9 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 9.1 - WHAT IF? A chicken has 78 chromosomes in its...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. 4CCCh. 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 - Prob. 4TYUCh. 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 - SYNTHESIZE YOUR KNOWLEDGE Shown here are two He La...Ch. 9 - FOCUS ON INFORMATION The continuity of life is...
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- Attachment of the mitotic spindle fibers to the kinetochores is a characteristic of which stage of mitosis? a. prophase b. prometaphase c. metaphase d. anaphasearrow_forward1) What phase of mitosis is this? Answer: 2) What is the indicated structure 1? select one. a. chromosome b. chromosome with two sister chromatids c. centrioles/centrosome d. spindle fibres e. metaphase plate 3)If the diploid (2n) number of this cell is 8 how many chromosomes are present? 4) If the diploid (2n) number of this cell is 8 how many sister chromatids are present? 5) If the diploid (2n) number of this cell is 8 how many homologous pairs are present?arrow_forwardMatch the following events with the stages in mitosis: chromosomal materials condenses to form compact chromosomes. alignment of chromosomes along the equator or plate with microtubules attached to poles sister chromatids for each chromosome split and move to opposite poles chromosomes are clustered at each of the poles and give way to cytokinesis A. telophase B. anaphase C. metaphase D. prophasearrow_forward
- What is necessary for a cell to pass the G2 checkpoint? a. cell has reached a sufficient size b. an adequate stockpile of nucleotides c. accurate and complete DNA replication d. proper attachment of mitotic spindle fibers to kinetochoresarrow_forwardWhat celluar events/processes are associated with G1,S,G2,and M phases of the cell cycle? With the phases of mitosis? Some example: A. DNA replication B. Beginning of mitosis C. Normal cell growth and function D. Breaksdown of nuclear membrane E.Separation of sister chromatids F.Alignment of chromosomes on the equator of the cell H.Triggering the compaction and condensation of chromosomes I. Attachment of microtubles to kinetochoresarrow_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_forward
- If cells in the process of dividing are subjected to colchicine, a drug that interferes with the functioning of the spindle apparatus, at which stage will mitosis be arrested?arrow_forwardIn 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_forwardThe phases of cell cycles in order are O a. Metaphase, anaphase, telophase, interphase, prophase and cytokinesis O b. Metaphase, anaphase, interphase, prophase, telophase and cytokinesis O c. Interphase, telophase, cytokinesis, prophase, metaphase and anaphase O d. Cytokinesis, telophase, anaphase, metaphase, prophase and interphase O e. Anaphase, telophase, cytokinesis, interphase, prophase and metaphase O f. Interphase, prophase, metaphase, anaphase, telophase and cytokinesis g. Prophase, interphase, metaphase, anaphase, telophase and cytokinesis What is the purpose of using sodium bicarbonate (NaHCO3) in the photosynthesis experiment? a. None of the other choices is valid O b. To provide dissolved dissolved 02 O c. To provide dissolved dissolved CO2 O d. To provide dissolved waterarrow_forward
- Which of the following statements is true of the cell cycle? a The current model of the cell cycle is made up of two main stages. b The cell cycle is a sequential pattern of cell growth, DNA replication, and cell division that takes place in prokaryotic cells. c Knowledge of the cell cycle has remained the same over the last several decades. d The cell cycle is often modeled as a circular diagram, because it is a continuous cycle.arrow_forwardWhich of the following would be expressed at varying levels during different parts of the cell cycle? A. cyclin-dependent kinases B. RNA polymerase C. cyclins D. Glycolysis enzymesarrow_forwardMatch 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_forward
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