BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 10, Problem 2S
Review you knowledge of signaling pathways (chapter 9). Create an outline illustrating how a growth factor (ligand) can lead to the production of a cyclin protein that would trigger S phase.
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Chapter 10 Solutions
BIOLOGY
Ch. 10.1 - Prob. 1LOCh. 10.2 - Prob. 1LOCh. 10.2 - Distinguish between homologues and sister...Ch. 10.2 - Prob. 3LOCh. 10.3 - Describe the eukaryotic cell cycle.Ch. 10.4 - Prob. 1LOCh. 10.4 - Prob. 2LOCh. 10.5 - Describe the phases of mitosis.Ch. 10.5 - Explain the importance of metaphase.Ch. 10.5 - Compare cytokinesis in plants and animals.
Ch. 10.6 - Prob. 1LOCh. 10.6 - Prob. 2LOCh. 10.7 - Prob. 1LOCh. 10.7 - Prob. 2LOCh. 10 - Binary fission in prokaryotes does not require the...Ch. 10 - Chromatin is composed of a. RNA and protein. b....Ch. 10 - What is a nucleosome? a. A region in the cells...Ch. 10 - What is the role of cohesin proteins in cell...Ch. 10 - The kinetochore is a structure that functions to...Ch. 10 - Separation of the sister chromatids occurs during...Ch. 10 - Why is cytokinesis an important part of cell...Ch. 10 - What steps in the cell cycle represent...Ch. 10 - Cyclin-dependent kinases (Cdks) are regulated by...Ch. 10 - Prob. 2ACh. 10 - Genetically, proto-oncogenes act in a dominant...Ch. 10 - The metaphase to anaphase transition involves a....Ch. 10 - The main difference between bacterial cell...Ch. 10 - In animal cells, cytokinesis is accomplished by a...Ch. 10 - Regulation of the cell cycle is very complex and...Ch. 10 - Review you knowledge of signaling pathways...Ch. 10 - Compare and contrast how mutations in cellular...
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- How does MPF trigger M phase of the cell cycle? A. MPF phosphorylates proteins that triggers the activation of M phase B. MPF has a regulatory role in breakdown of the nuclear envelope during M phase C. MPF is a dimer subunit that is turned on during S phase to aid with chromosome replication D. MPF Cdk subunits regulate M phasearrow_forwardFor cellular transduction, why is it useful that phosphorylation cascades have a series of protein kinases? a. they amplify the original signal b. they always lead to the same cellular response c. the number of molecules used is small and fixed d. they are cell specificarrow_forwardExplain the process of C3 in plantsarrow_forward
- Consider the estrogen receptor (ER), a cell-cell signaling molecule which can be mutated to caus3 cancer. ER has a very short half life of 30 minutes. Consider a cell that starts out with 20,000 molecules of estrogen receptor at the start of your experiemnt. Ar t=0 you treat the cell. At t=0 you treat the cell with two drugs. 1)alpha-amanitin, a poisonous chemical from mushrooms that inhibits the enzymatic activity of RNA polymerase (this is why you should know your mushrooms) and 2) cycloheximide, a drug that inhibits translation by the ribosome. Under these conditions, how many molecules of ER protein will be present at the following times?arrow_forwardExplain the three stages of cell signaling. a. receptor b. transduction c. response. Attach imagesarrow_forwardCompare and contrast cell signaling in prokaryotes and eukaryotesarrow_forward
- Use the EGF Pathway passage to answer the questions. EGF signals by binding to cell surface EGF receptors. Which of these observations, if true, would BEST explain EGF's mechanism of action? A. EGF is hydrophilic and can easily diffuse through the cell membrane. B. EGF is hydrophobic and can easily diffuse through the cell membrane. C. EGF is hydrophilic and cannot diffuse through the cell membrane. D. EGF is hydrophobic and cannot diffuse through the cell membrane.arrow_forwardDescribe what happens to the G1 cell cycle check point of a skin cell that is stimulated to divide by neighboring cells following an injury. Describe the pathway from the growth factor signal to the cell cycle checkpoint regulation of gene expression resulting in cell duplication. Briefly explaining the mechanismarrow_forwardMatch each of the changes that can contribute to cancer with its correct description. Loss of function of regulators that send old or damaged cells into apoptosis Hyperactivation of signalling pathways that tell the cell to grow and divide 1. Sustaining proliferative signalling Loss of function of structural proteins that anchor cells to surrounding tissue and/or activation of cell migration 2. Evading growth suppressors 3. Activating invasion and metastasis Loss of function of 4. Enabling replicative immortality regulators that stop inappropriate growth and cell division 5. Inducing angiogenesis 6. Resisting cell death Loss of function of regulators that force aging cells to exit the cell cycle and enter GO or replicative senescence 00arrow_forward
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