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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Use the EGF Pathway passage to answer the questions.
Part A
Which of these structures, if present in a prokaryote, would prevent the organism from using this type of actin polymerization to chemotax toward a signal?
A.
cell wall
B.
flagellum
C.
mitochondrion
D.
ribosome
Part B
In the model proposed, which of these events MOST likely occurs to facilitate chemotaxis?
A.
Integrins anchor the cell to extracellular components.
B.
Motor proteins move actin toward the leading edge.
C.
Mitochondria migrate away from the leading edge.
D.
Desmosomes anchor the cell to other cells.
Part C
Based on the researcher’s observations on filamentous actin, what other observation regarding cell chemotaxis was MOST likely observed?
A.
The cell moved toward the source of the signaling molecule only after the addition of Compound A.
B.
The cell moved away from the source of the signaling molecule only after the addition of Compound A.…
What is the difference between cyclins and kinase proteins?
A.
Kinases regulates MPF dimer formation and cyclins phosphorylates the kinases in a negative feedback loop
B.
Cyclins regulate cell cycle, while kinases are enzymes that catalyze phosphorylation of cyclins
C.
Kinases are enzymes that convert MPF into CDK and the cyclins bind to CDK to send cells into M phase
D.
Cyclins are enzymes and kinase are proteins that regulate M phase
Protein kinases activated , ardently Cyclades activated, camp produced, proteins phosphorylation, G protein activated. Which are the correct sequence? Chapter 6
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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- 1.create a Graphical Abstract to summarise the role of ALP in cancer?With imagearrow_forwardModify the diagram above to illustrate specific protein(s) that would participate in regulating this pathway if DNA damage was detected in these cells. What effect would this have on the progression of the cell cycle? If there is more than one possible outcome be sure to outline each one.arrow_forwardWhen a mitogen binds to a receptor on a cell, the signal is transported via a signaling pathway into the cell and a new cell cycle can start. Describe this signal path. Explain what would happen to this one signal path if the cell simultaneously detects that there is damaged DNA in the cell.arrow_forward
- make a claim about the effects of external signals on cell division.arrow_forwardThe specific type of signaling molecule used by haploid yeast cell is ?arrow_forwardHow 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_forward
- Explain the process of C3 in plantsarrow_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_forwardDescribe the cells that make up the ascending loop of Henle. Include a clear explanation of how the cell’s unique features enable its unique action.arrow_forward
- Explain the action of cyclin-dependent kinases inregulation of the cell cycle.arrow_forwardConsider 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_forward
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