Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 12.3, Problem 3CC
MAKE CONNECTIONS → Explain how receptor tyrosine kinases and intracellular receptors might function in triggering cell division. (Review Figures 11.8 and 11.9 and Concept 11.2.)
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Chapter 12 Solutions
Campbell Biology: Custom Edition
Ch. 12.1 - How many chromosomes are drawn in each part of...Ch. 12.1 - WHAT IF? A chicken has 78 chromosomes in its...Ch. 12.2 - How many chromosomes are shown in the illustration...Ch. 12.2 - Compare cytokinesis in animal cells and plant...Ch. 12.2 - During which stages of the cell cycle does a...Ch. 12.2 - Compare the roles of tubulin and actin during...Ch. 12.2 - A kinetochore has been compared to a coupling...Ch. 12.2 - MAKE CONNECTIONS What other functions do actin...Ch. 12.3 - In Figure 12.14, why do the nuclei resulting from...Ch. 12.3 - How does MPF allow a cell to pass the G2 phase...
Ch. 12.3 - MAKE CONNECTIONS Explain how receptor tyrosine...Ch. 12 - Differentiate between these terms: chromosome,...Ch. 12 - In which of the three phases of interphase and the...Ch. 12 - Explain the significance of the G1, G2, and M...Ch. 12 - Through a microscope, you can see a cell plate...Ch. 12 - Vinblastine is a standard chemotherapeutic drug...Ch. 12 - One difference between cancer cells and normal...Ch. 12 - The decline of MPF activity at the end of mitosis...Ch. 12 - In the cells of some organisms, mitosis occurs...Ch. 12 - Which of the following does not occur during...Ch. 12 - Cell A has half as much DNA as cells B, C, and D...Ch. 12 - The drug cytochalasin B blocks the function of...Ch. 12 - VISUAL SKILLS The light micrograph shows dividing...Ch. 12 - DRAW IT Draw one eukaryotic chromosome as it would...Ch. 12 - EVOLUTION CONNECTION The result of mitosis is that...Ch. 12 - SCIENTIFIC INQUIRY Although both ends of a...Ch. 12 - WRITE ABOUT A THEME: INFORMATION The continuity of...Ch. 12 - SYNTHESIZE YOUR KNOWLEDGE For selected answers,...
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- Q41arrow_forwardDiscuss Concepts Why do you suppose cells evolved internal response mechanisms using molecules that bind GTP instead of ATP?arrow_forwardMAKE CONNECTIONSPDGF signals cells by binding toa cell-surface receptor tyrosinekinase. If you added a chemicalthat blocked phosphorylation,how would the results differ?(See Figure 11.8.)arrow_forward
- What does the ability to produce iPSCs tell scientists about the differences between ES cells and differentiated cells? Do these findings argue against the principle of nuclear equivalence? Explain your answer.arrow_forwardMAKE CONNECTIONS Review Figure 12.16 on cell cyclecontrol. Would you expect MPF (maturation-promotingfactor) activity to remain steady during cleavage? Explain.arrow_forwardBIOC 384 Nuclear Receptor Signaling Q8.3: Glucocorticoids are potent anti-inflammatory molecules that repress inflammation through transcriptional mechanisms. Beginning with inhalation of the asthma drug fluticasone, describe how this treatment reduces inflammation at the molecular level.arrow_forward
- BIOC 384 Overview of Cell Signaling Pathways Q7.2: A first messenger molecule activates a receptor that stimulates Enzyme A, which synthesizes 100 second messenger molecules. In turn, each second messenger activates only one molecule of Enzyme B, which once activated, phosphorylates 100 molecules of Enzyme C that each phosphorylate 75 molecules of Enzyme D. In the last step, each Enzyme D phosphorylates 50 transcription factors. How many transcription factors are phosphorylated in response to the first messenger binding to the receptor? How many transcription factors would be phosphorylated if one copy of the Enzyme D gene were inactivated (heterozygous genotype) so that there were only half the number of functional Enzyme D molecules in the cell? Explain.arrow_forwardHow can a cell use an extracellular peripheral protein as the receptor to transmit a signal into the cell?arrow_forwardAsaparrow_forward
- More than 500 genes have been identified in the human genome that code for protein kinases. What does such identification imply regarding the role of protein kinases in cellular functions? Explain your answer.arrow_forwardQ How can quorum sensing be considered a regulatorymechanism for conserving cell resources?arrow_forwardShow all working explaining detailly each step Solution should be typewritten with a computer keyboard!arrow_forward
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