Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 12, Problem 14TYK
Summary Introduction
Introduction: Cell division is a procedure in which a parent cell divides into two daughter cells. There are many phases of cell cycle. Broadly, cell cycle is divided into interphase and mitotic phase. Interphase is divided into gap1 (G1) phase, synthetic phase (S-phase), and gap 2 (G2) phase. There are control points that regulate the process of cell cycle and are called cell cycle checkpoints. There are three important checkpoints present in the cell cycle. These are G1 checkpoints, G2 checkpoints, and M phase checkpoints.
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Which of the following is the primary method by which cyclin proteins are regulated to influence entry into the cell cycle or transition from one stage to the next?
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Transcriptional upregulation and translation followed by targeted ubiquitin-mediated degradation by a proteasome.
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Phosphorylation to regulate the activity of the kinase site.
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Describe the use of stem cells in medicine and cosmetology, analyze the advantages and disadvantages of these methods *.
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Chapter 12 Solutions
Study Guide for Campbell Biology
Ch. 12 - a. How many chromosomes are in your somatic cells?...Ch. 12 - a. What event is common to all three subphases of...Ch. 12 - The following diagrams will depict the five stages...Ch. 12 - a. What is MPF? b. Describe the relative...Ch. 12 - In the following photomicrograph of onion root tip...Ch. 12 - Describe one chromosome as it proceeds through an...Ch. 12 - Draw a sketch of one half of a mitotic spindle....Ch. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - Prob. 3TYKF
Ch. 12 - Prob. 4TYKFCh. 12 - Prob. 5TYKFCh. 12 - Prob. 6TYKFCh. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - Prob. 8TYKFCh. 12 - Prob. 9TYKFCh. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - One of the differences between prokaryotic binary...Ch. 12 - Prob. 2TYKCh. 12 - Prob. 3TYKCh. 12 - Prob. 4TYKCh. 12 - Prob. 5TYKCh. 12 - In eukaryotic organisms, chromosomes are...Ch. 12 - Prob. 7TYKCh. 12 - Prob. 8TYKCh. 12 - Prob. 9TYKCh. 12 - Prob. 10TYKCh. 12 - During cell division, cyclin combines with...Ch. 12 - Prob. 12TYKCh. 12 - Prob. 13TYKCh. 12 - Prob. 14TYKCh. 12 - Vinblastine is a chemotherapeutic drug used to...
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- How does gene activation lead to cell differentiation? Explain the correct answer and explain why the others are wrong. A. Different genes are activated in different cells, causing each cell to have a unique funcation B. The same genes are actives in every cell of your body, causing every cell to function the same C. Certain cells only have parts of DNA that causes cell deferentiation D. Unique genes are in different cells, causing each cell to have a unique functionarrow_forwardWhy do stem cells that have been damaged prefer apoptosis over repairing the genome? a. Stem cells cannot repair the damaged genome b. The repair machinery is not perfect and therefore prone to make mistakes c. They don't d. None of the abovearrow_forwardDiscuss the principles that govern the presence and maintenance of stem cells both in vivo and in vitro? What is the current status of the technology, and its possible applications? What are the pros and cons of the technology, and how do these issues personally affect people?arrow_forward
- Vinblastine is a standard chemotherapeutic drug used to treat cancer. Because it interferes with the assembly of microtubules, its effectiveness must be related to Select one: a. inhibition of DNA synthesis. O b. myosin denaturation and inhibition of cleavage furrow formation. c. suppression of cyclin production. Od. inhibition of regulatory protein phosphorylation. O e. disruption of mitotic spindle formation. Next pagearrow_forwardDefine the following terms:a. tumor promoterb. guanine nucleotide exchange factorc. DAGd. steady statee. IP3arrow_forwardA research laboratory uses a cancer cell line that has undergone thousands of cell cycle divisions in the laboratory without any change in the length of its chromosomes. The most likely reason the chromosomes aren’t shortening is that the cancer cells are expressing Select one: a. very low levels of telomerase. b. high levels of telomerase. c. high levels of RNA polymerase. d. DNA polymerases with high fidelity. e. high levels of ligase activity.arrow_forward
- 5)What are the characteristics of stem cells? (Select ALL that apply) Select one or more: a. They have the potential to develop into different cell types. b. They have the ability to make more stem cells. c. They have the potential to develop into any cell type in the human body. d. When certain genes are turned on, stems cell undergo differentiation. e. Stem cells can divide indefinitelyarrow_forwardWhat is an induced pluripotent stem cell? a. A cell from which the nucleus has been removed b. A cell extracted from an early embryo c. A specially treated somatic cell that can develop into any cell type d. A specially treated embryonic stem cell that develops into one specialized cell typearrow_forwardTranscription factors such as myoD control gene expression in which of the following ways? Group of answer choices A. direct control of transcription of specific genes B. control of the cell cycle C. general control of transcription through chromatin modification D. control of RNA splicing E. control of translationarrow_forward
- You have a newly plant extract and you want to know if the extract can possibly cause cancer in humans and other animals. How do you go about the experiment? Outline the general procedure you will perform please include the step by step process of your experiment.arrow_forwardWhich of the following is not an example of constitutively expressed gene? a. genes for cell division and growth b. genes involved in DNA repair c. genes for cellular respiration d. genes that function in ATP synthesisarrow_forwardNew treatments for several conditions are being developed using stem cells in medical waste, such as biopsy material, teeth, menstrual blood, umbilical cords, and fatty tissue removed in liposuction. For example, fat samples from injured horses are used to grow stem cells to treat tendon injuries. Explain how the two defining characteristics of stem cells enable them to be used to replace damaged or diseased tissue, so that the new tissue functions as opposed to forming a scar.arrow_forward
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