Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 9, Problem 20RQ
Which type of molecule acts as a signaling molecule in yeasts?
- steroid
- autoinducer
- mating factor
- second messenger
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Students have asked these similar questions
This pertains to membrane transport and cell signaling.
Give an example in animals and in plants where the two signaling and responding cells are in direct contact.
Which statement best describes how
molecular complementarity enables
specificity during a signaling event?
The molecular shape of two molecules should
have a small amount of complementarity.
The molecular shape of two molecules should
have a large amount of overall
complementarity that involves weak
interactions at multiple different sites.
The molecular shape of two molecules should
have a large amount of overall
complementarity that involves strong
interactions at multiple different sites.
The molecular shape of two molecules should
have a large amount of overall
complementarity that involves covalent
interactions at multiple different sites.
Which is true about signaling receptors?
They are transmembrane proteins that have binding sites for extracellular activated proteinsto effect changes inside the cell.
They are transmembrane proteins that have binding sites for extracellular DNA-binding proteins to effect changes inside the cell.
They are transmembrane proteins that have binding sites for extracellular enzyme effectors to effect changes inside the cell.
They are transmembrane proteins that have binding sites for extracellular messengers to effect changes inside the cell.
Chapter 9 Solutions
Biology 2e
Ch. 9 - Figure 9.8 HER2 is a receptor tyrosine kinase. In...Ch. 9 - Figure 9.10 In certain cancers, the GTPase...Ch. 9 - Figure 9.17 Which of the following statements...Ch. 9 - Figure 9.18 What advantage might biofilm...Ch. 9 - What property prevents the ligands of cell-surface...Ch. 9 - The secretion of hormones by the pituitary gland...Ch. 9 - Why are ion channels necessary to transport ions...Ch. 9 - Endocrine signals are transmitted more slowly than...Ch. 9 - A scientist notices that when she adds a small,...Ch. 9 - Where do DAG and IP3 originate? They are formed by...
Ch. 9 - What property enables the residues of the amino...Ch. 9 - Histamine binds to the H1 G-protein-linked...Ch. 9 - A scientist observes a mutation in the...Ch. 9 - What is the function of a phosphatase? A...Ch. 9 - How does NF-kB induce gene expression? A small,...Ch. 9 - Apoptosis can occur in a cell when the cell is...Ch. 9 - What is the effect of an inhibitor binding an...Ch. 9 - How does PKC’s signaling role change in response...Ch. 9 - A scientist notices that a cancer cell line fails...Ch. 9 - Which type of molecule acts as a signaling...Ch. 9 - Quorum sensing is triggered to begin when...Ch. 9 - A doctor is researching new ways to treat biofilms...Ch. 9 - What is the difference between intracellular...Ch. 9 - How are the effects of paracrine signaling limited...Ch. 9 - What are the differences between internal...Ch. 9 - Cells grown in the laboratory are mixed with a dye...Ch. 9 - Insulin is a hormone that regulates blood sugar by...Ch. 9 - The same second messengers are used in many...Ch. 9 - What would happen if the intracellular domain of a...Ch. 9 - If a cell developed a mutation in its MAP2K1 gene...Ch. 9 - What is a possible result of a mutation in a...Ch. 9 - How does the extracellular matrix control the...Ch. 9 - A scientist notices that a cancer cell line shows...Ch. 9 - What characteristics make yeasts a good model for...Ch. 9 - Why is signaling in multicellular organisms more...Ch. 9 - Pseudomonas infections are very common in hospital...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Histamine is a chemical substance released in inflammatory and allergic response. The histamine H1 receptor is a G protein-coupled receptor that activates phospholipase C in response to the binding of histamine. Arrange the data below showing the process of histamine signal transduction from the H1 receptor. Calcium ions flow through ligand-gated ion channel. Phosphorylation cascade leads to the activation of a cellular response. Calcioum ions activate a protein, leading to a cellular response. Enzyme cleaves PIP2, forming DAG and IP3. Calcium iom concentration increases in the cytosol. IP3 binds to a ligand-gated ion channel in thw ER membrane.arrow_forwardWhy is the lifetime of second messengers so crucial to signaling efficiency? Example: Genetically engineering a second messenger by increasing its lifetime would decrease the efficiency of its signal in a cell's signaling system.arrow_forwardSignaling within organisms can occur using action potentials (short-term signaling) and/or hormones (long-term signaling). Identify situations where each type of signaling would be better. Describe why having a long-term signaling system is beneficial to organisms (2-3 sentences).arrow_forward
- The step(s) involved in cell signaling are: Signaling cell synthesizes and secretes a signaling molecule The signaling molecule binds to a receptor of the target cell O Extracellular signal is converted into O intracellular signal followed by the response All of the abovearrow_forwardThis question pertains to membrane transport & cell signaling. Give an example of animals and plants where the two signaling and responding cells are in signaling.arrow_forwardWhat characteristics make yeasts a good model for learning about signaling in humans?arrow_forward
- If a cell wants to directly affect transcription of genes by utilizing cell signaling which of the following molecules would a cell use in order to do this? O polar / charged signaling molecules steroid signaling molecules O protein signaling molecules O large hydrophilic signaling moleculesarrow_forwardHow is an extracellular signal converted to an intracellular signal in signal transduction? Give a specific example.arrow_forwardThe structure of a plant cell wall needs to loosen to accommodate cell growth. What signaling molecule controls this process?arrow_forward
- what happens when there is a a lack of a key molecule in a signalling pathwayarrow_forwardFor most signaling molecules, explain why a signal transduction pathway is necessaryarrow_forwardThe figure below illustrates a model of a signal transduction cascade, initiated by the bind- ing of a ligand to a membrane-bound receptor. ligand A partial model of a signal transduction pathway A inactivated molecules B -receptor protein A D activated molecule 1 Based on the figure, which of the following describes the most likely outcome of a mutation that changes the intracellular region of receptor protein A? activated molecule 2 activated molecule 3 The receptor will not activate molecule 1, but the activation of molecules 2 and 3 will continue at lower rates. Molecule 1 will not become activated, preventing the activation of molecules 2 and 3 and the subsequent cellular response. с The ligand will not be able to bind the membrane-bound receptor, preventing the signal transduction pathway from initiating. The ligand that binds to protein A will not enter the cell, preventing the cellular response from occurring.arrow_forward
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