EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Textbook Question
Chapter 9.1, Problem 1CC
Figure 9.1 Response of a yeast cell to glucose. When glucose is absent from the extracellular environment, the cell is not well prepared to take up and
What is the signaling molecule in this example?
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Chapter 9 Solutions
EBK BIOLOGY
Ch. 9.1 - Figure 9.1 Response of a yeast cell to glucose....Ch. 9.1 - Prob. 1BCCh. 9.1 - Which type of signal, paracrine or endocrine, is...Ch. 9.1 - Prob. 3CCCh. 9.2 - Prob. 1BCCh. 9.2 - Prob. 1CCCh. 9.2 - Prob. 2CCCh. 9.3 - Prob. 1BCCh. 9.3 - Prob. 1CCCh. 9.3 - Prob. 2CC
Ch. 9.3 - In the case of signaling pathways involving...Ch. 9.5 - Prob. 1EQCh. 9.5 - Prob. 2EQCh. 9.5 - Prob. 3EQCh. 9.5 - Prob. 1CCCh. 9 - Prob. 1TYCh. 9 - Prob. 2TYCh. 9 - Prob. 3TYCh. 9 - Prob. 4TYCh. 9 - Prob. 5TYCh. 9 - The relay protein Ras is part of the EGF pathway...Ch. 9 - Prob. 7TYCh. 9 - Prob. 8TYCh. 9 - Prob. 9TYCh. 9 - Prob. 10TYCh. 9 - Prob. 1CQCh. 9 - Conceptual Questions What are the three stages of...Ch. 9 - Prob. 3CQCh. 9 - Prob. 1COQCh. 9 - Prob. 2COQ
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- Signaling by soluble extracellular molecules can be classified as endocrine, paracrine, or autocrine. Describe how these three types of cellular signaling differ. Growth hormone is secreted from the pituitary, which is located at the base of the brain and acts through growth hormone receptors located on the liver. Is this an example of endocrine, paracrine, or autocrine signaling? Why?arrow_forwardCell signaling in plant and animal cells is similar in some ways and different in others. What are some examples of this?arrow_forwardCell signaling- Describe the difference between quick vs. slow responses in cell signaling. Make sure you identify which one you are describing AND determine if the NGF pathway (NGF turns on Sprouty transcription) or the GPCR pathway (sperm binds egg to release Ca+) is an example of a quick vs a slow response.arrow_forward
- Paracrine signaling is characterized by ligands that are __________. produced by the cell itself secreted by neighboring cells secreted by distant cells transported to distant cells secreted in inactive formarrow_forwardSecond-messenger systems ultimately bring about the desired cell response by inducing a change in the shape and function of particular designated intracellular proteins. (True or false?)arrow_forwardMRNA 5' AUG 3' ribosome protein signal kinase transmembrane ligand binding DNA sequence binding domain domain domain domain cytoplasm plasma membrane extracellular fluidarrow_forward
- Tumor necrosis factor (TNF) signaling Discuss the nature of the TNF ligand and the receptor for that ligand, and explain the general steps in the pathway (use figure 8.53 and explain in your own words). Make sure to include an explanation of the proteolytic and phosphorylation cascades. What advantage is there in having a cascade part of these pathways? What purpose does it serve?arrow_forwardRTK: What would the following double mutations mean for the status of the signaling pathway, and the phosphorylation of MAPKK (MEK)? 1. Ligand is bound to the receptor; MAPK T120A mutation (T120 is normally phosphorylated by MAPKK) a) Pathway ON (final output is achieved) b) Pathway OFF (no final output) c) Phosphorylation of MAPKK MEK d) NO Phosphorylation of MAPKK MEK 2) Ligand is not bound to the receptor; MAPKKK T132E mutation (T132 is normally phosphorylated by Ras) a) Pathway ON (final output is achieved) b) Pathway OFF (no final output) c) Phosphorylation of MAPKK MEK d) NO Phosphorylation of MAPKK MEKarrow_forwardWhat is the intracellular signaling molecule that causes the mechanism above to happen? said another way: you were told that smooth muscle is more responsive to hormone and that this did something to receptors. From here you had to decide above if this is up or downregulation of receptors and if this occurs via endo or exocytosis. What is the intracellular signal that makes this endo or exocytosis happen? Intracellular concentration rises for CAMP Intracellular concentration rises for calcium Intracellular concentration rises for potassium G-proteins are activated Kinases are activatedarrow_forward
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