Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 11.1, Problem 1CC
Explain how signaling is involved in ensuring that yeast cells fuse only with cells of the opposite mating type.
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Students have asked these similar questions
Identify which of the following statements is a lie?
Select one:
a. Yeasts use paracrine signaling to communicate information on mating with other yeast cells.
b. Yeasts are single-celled eukaryotes; therefore, they have a nucleus and organelles characteristic of more complex life forms.
c. Yeast can reproduce sexually through a signaling pathway known as the mating factor pathway.
When a single celled slime mold has run out of food source, the cell will initiate the cell signaling process that results in the release of cyclic-AMP (CAMP). CAMP then
acts as a signal that has two results
1) the cell tells itself it is still in fact without food and to continue the signal
2) the cell tells other local/neighboring single celled slime molds that there is not food near by so they too can scream the CAMP signal of hunger.
What type of signal distance is accomplished in result 17?
O a.
autocrine
O b
endocrine
рarасrine
O d. synaptic
e.
contact dependent
Explain a mechanism for how a nuclear-encoded protein is targeted to the inner membrane of the mitochondrion. Explain the mechanism for how a nuclear-encoded protein is targeted to the thylakoid membrane.
Describe an experiment that could be conducted to show that there is a targeting system for a nuclear encoded protein that ultimately finds its way to a specific organelle.
Chapter 11 Solutions
Campbell Biology
Ch. 11.1 - Explain how signaling is involved in ensuring that...Ch. 11.1 - In liver cells, glycogen Phosphorylase acts in...Ch. 11.1 - Prob. 3CCCh. 11.2 - Prob. 1CCCh. 11.2 - WHAT IF? What would the effect be if a cell made...Ch. 11.2 - MAKE CONNECTIONS How is ligand binding similar to...Ch. 11.3 - What is a protein kinase, and what is its role in...Ch. 11.3 - When a signal transduction pathway involves a...Ch. 11.3 - What is the actual signal that is being transduced...Ch. 11.3 - WHAT IF? If you exposed a cell to a ligand that...
Ch. 11.4 - How can a targct cell's response to a single...Ch. 11.4 - WHAT IF? If two cells have different scaffolding...Ch. 11.4 - Prob. 3CCCh. 11.4 - Prob. 4CCCh. 11.5 - Give an example of apoptosis during embryonic...Ch. 11.5 - WH AT IF? If apoptosis occurred when it should...Ch. 11 - What determines whether a cell responds to a...Ch. 11 - How are the structures of a GPCR and an RTK...Ch. 11 - What is the difference between a protein kinase...Ch. 11 - What mechanisms in the cell terminale its response...Ch. 11 - What is an explanation for the similarities...Ch. 11 - Binding of a signaling molecule to which type of...Ch. 11 - The activation of receptor tyrosinc kinases is...Ch. 11 - Lipid-soluble signaling molecules, such as...Ch. 11 - Consider this pathway: epinephrine G...Ch. 11 - Apoptosis involves all but which of the following?...Ch. 11 - Which Observation suggestcd to Sutherland the...Ch. 11 - Prob. 7TYUCh. 11 - DRAW IT Draw the following apoptotic pathway,...Ch. 11 - EVOLUTION CONNECTION Identify the evolutlonary...Ch. 11 - Prob. 10TYUCh. 11 - SCIENCE, TECHNOLOGY, AND SOCIETY The aging process...Ch. 11 - WRITE ABOUT A THEME: ORGANIZATION The properties...Ch. 11 - SYNTHESIZE YOUR KNOWLEDGE There are five basic...
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- Describe the process by which the forespore influences gene expression in the mother cell during sporulation in B. subtilis. To which of the eukaryotic signaling events described in the book are analogous?arrow_forwardDiagram a pathway of signal transduction including aligand, receptor, and ultimately a transcription factor thatactivates a gene that inhibits the receptor.arrow_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_forward
- Identify which of the following statements is a lie?Select one: a. Budding yeasts first start from being a haploid cell and further becomes a diploid cell. b. Budding yeasts secrete a signaling molecule called a “mating factor”. c. The mating factor in the sexual reproduction of yeast is directed to all yeast cells in the vicinity.arrow_forwardIn Xenopus, one of the substrates of mitotic CDKs is the phosphatase Cdc25. When phosphorylated by mitotic CDKs, Cdc25 is activated. What is the substrate of Cdc25? How does this information help to explain the rapid rise in mitotic CDK activity as cells enter mitosis?arrow_forwardThe figure below shows the life cycle of the fungus Neurospora. The adult stage of the Neurospora is a multicellular haploid: a. Between which two stages of the Neurospora life cycle do most mitotic cell divisions occur? b. Neurospora has an arginine amino acid synthesis pathway shown below: Suppose I have a neurospora strain that has a mutation such that it will not grow unless I supplement the media (food) with arginine (but not with citrulline or ornithine). What gene is mutated? Explain your reasoning. c. Suppose I take the strain above that only grows with arginine supplements and cross it to a different mutant Neurospora strain that grows with arginine and citrulline supplements but not ornithine supplements. Assming genes A, B and C are unlinked and there is only one mutation per strain: i) What percentage of the progeny will grow on ornithine? ii) What percentage on citrulline? iii) What percentage on arginine? Show your work for i), ii) and iii). [Can be answered in less…arrow_forward
- What is the ploidy and equation for a typical S. pombe cell? Describe specifically how the ploidy of the yeast cells, and the phase in which the cells have been arrested, will increase the success of creating cells that will express the phenotype of the silenced target gene.arrow_forwardWhich of the following is false about cyclin-cdk complexes? OCdk's do not have to bind to cyclin proteins for complex to be active. OCdk/cyclin complexes phosphorylates proteins required to trigger next cell cycle phase. Process acts as molecular brakes to ensure cell is ready to continue with cell cycle. O Cyclin concentrations increase gradually, but cdk must be phosphorylated by specific kinase for complex to be activearrow_forwardExplain how gibberellin “removes the brakes” from some cellular processes.arrow_forward
- How is the purpose of cell signaling different in unicellular organisms vs. multicellular organisms? Provide an example of each.arrow_forwardWhat characteristics make yeasts a good model for learning about signaling in humans?arrow_forwardYou stimulated the cell with a ligand and analyzed the response. Upon ligand treatment, the cell increased the expression of gene α and decreased expression of gene β. When you inhibit cyclic AMP production by treating the cell with an inhibitor of Adenylyl cyclase, the increased expression of gene α was not observed but the decrease gene β expression was still observed. a) What you can expect for gene α regulation by this ligand? What signaling mechanism could be used? b) To determine how gene β is regulated by the ligand via what signaling mechanism, provide your hypothesis and indicate a potential experiment that you can perform to test that.arrow_forward
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Intro to Cell Signaling; Author: Amoeba Sisters;https://www.youtube.com/watch?v=-dbRterutHY;License: Standard youtube license