Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 10.3, Problem 2C
Summary Introduction
To explain: The molecular controls that trigger the onset of different stages of the cell cycle.
Introduction: The sequence of events that takes place in the cell leading to cell division and
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What are two molecular controls that trigger the onset of different stages of the cell cycle?
Which of the following is true with respect to cyclins and CDKs?
A) CDKs promote progression of the cell cycle, cyclins function to inhibit progression of the cell cycle
B) CDKs are the checkpoints in the cell cycle, and when bound to cyclins, they stop progression of the cell cycle
C) CDKs will only work to promote progression of the cell cycle when complexed with their designated cyclins
D) CDKs are rarely expressed during a cell's cycle, unless cyclins are present to act as transcription factors
.
What are the two broadest divisions of the cell cycle? What two processes are involved in the actual duplication of the cell?
Chapter 10 Solutions
Biology (MindTap Course List)
Ch. 10.1 - Discuss the significance of chromosomes in terms...Ch. 10.1 - Explain how DNA is packed into chromosomes in...Ch. 10.1 - What are the informational units on chromosomes...Ch. 10.1 - How is the large discrepancy between DNA length...Ch. 10.2 - Identify the stages in the eukaryotic cell cycle...Ch. 10.2 - Describe the structure of a duplicated chromosome,...Ch. 10.2 - Prob. 5LOCh. 10.2 - Prob. 1CCh. 10.2 - What are the stages of mitosis, and what happens...Ch. 10.3 - Prob. 6LO
Ch. 10.3 - What are cell-cycle checkpoints?Ch. 10.3 - Prob. 2CCh. 10.4 - Prob. 7LOCh. 10.4 - Distinguish between haploid and diploid cells, and...Ch. 10.4 - Prob. 9LOCh. 10.4 - 10.2 What are the stages of mitosis, and what...Ch. 10.4 - Prob. 1CCh. 10.4 - Prob. 2CCh. 10.4 - Can haploid cells divide by mitosis? by meiosis?Ch. 10.5 - Prob. 11LOCh. 10.5 - Prob. 1CCh. 10.5 - Prob. 2CCh. 10 - A nucleosome consists of (a) DNA and scaffolding...Ch. 10 - Test Your Understanding 2. At which of the...Ch. 10 - In a cell at __________, each chromosome consists...Ch. 10 - The molecular tether that links sister chromatids...Ch. 10 - In an animal cell at mitotic metaphase, you would...Ch. 10 - A diploid nucleus at early mitotic prophase has...Ch. 10 - You would expect to find a synaptonemal complex in...Ch. 10 - A chiasma links a pair of (a) homologous...Ch. 10 - VISUALIZE Sketch a mitotic prophase chromosome and...Ch. 10 - CONNECT Does the DNA content of the cell change...Ch. 10 - Fill out the following table for a cell with 5...Ch. 10 - Fill out the following table for a diploid cell...Ch. 10 - In questions 13 and 14, decide whether each is an...Ch. 10 - Prob. 14TYUCh. 10 - EVOLUTION link How does mitosis provide evidence...Ch. 10 - Prob. 16TYU
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- If the most basic function of the cell cycle is to accurately duplicate the DNA in the chromosomes and distribute the copies precisely to the daughter cells, why are there gaps between S-phase and M-phase?arrow_forwardIn cell cycle, under the control system, explain in details (including roles of related proteins): a) How mitogens trigger transcription of genes for entry into S phase. b) During M phase, how M-Cdk can trigger cohesin dissociation as well as Mad2 triggers mitotic checkpoint to delay metaphase to anaphase transition.arrow_forwardWhat are four external factors that play a role in cell cycle control?arrow_forward
- What are the three protein families that regulate the cell cycle? give an example for each:arrow_forwardDuring cell cycle there are checkpoints. They best way to define a checkpoint is? a) a location within the cell where proteins are inspected for mutations b) G1, S, G2, prophase metaphase anaphase or telophase c) specific stages where further progress of the cell cycle can be halted d) any step where the cell cycle is blocked by a mutated proteinarrow_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_forward
- Explain why we can say that M-phase of the cell-cycle is triggered by a positive feedback loop. a) What would the consequences be if cohesins were working normally but condensins were not? and b) what stage of the cell cycle would this cause problems in? Why is it important for the centrosome to duplicate during G1-G2 (interphase) before M phase? The kinetochores serve as a link between the sister chromatids and the microtubules attached to the mitotic spindle. a) How are microtubules still able to exhibit dynamic instability after they are bound to the sister chromatids and b) why is this important to mitosis? As the name suggests, the Anaphase-promoting-complex (APC), promotes the 4th phase of mitosis by separating the sister chromatids so they can travel to separate poles of the cell, and prevents them from being re-zipped together. Describe how APC does these two things (Hint: one involves M-cyclin and the other involves…arrow_forwardWhat aspects of the cell cycle are controlled by the G1, G2, and M checkpoints? How are cyclins and cyclin-dependent protein kinases involved in cell cycle regulation at checkpoints?arrow_forwardThe cell cycle control system is a cycling set of molecules in the cell that triggers and coordinates key events in the cell cycle. This is all controlled by growth factors. a) Identify the major checkpoints in a cell and its function. b)Explain the role of the growth factor.arrow_forward
- Which phases of the cell cycle is generally the longest in the cells of a mature eukaryote? What steps make it longest phase?arrow_forwardWhat is the function of a centromere? At what stage of the cellcycle would you expect the centromere to be the most important?arrow_forwardWhich of the following statements is true about cell cycle checkpoints? Question 5 options: A) G1 checkpoint check for cell size, nutrients, and growth factors availability. B) G2 checkpoint check for cell size, nutrients, growth factors, & DNA damage. C) G2 checkpoint check for chromosome attachment to spindle at metaphase D) All the above are true.arrow_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