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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Which type of molecule acts as a signaling molecule in yeasts? a. steroid b. autoinducer c. mating factor d. second messenger
Receptors often activate signaling molecules that are __________. This property helps to increase signaling efficiency of this pathway.
bound to the plasma membrane
floating in the cytosol
locked in the endoplasmic reticulum
inside the mitochondria
all of the above
Which of the following utilizes receptors that are located in the cytosol?
Steroid Hormone Signaling
GPCR Singaling
Ion channel signaling
RTK Singaling
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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- 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.arrow_forwardSteroid hormones ______. bind to receptors in the cytoplasm or nucleus trigger a signal transduction pathway when they bind to a receptor bind to mRNA in the cytoplasm to initiate transcription all of the abovearrow_forwardA cell releases a ligand that travels through the extracellular matrix to a nearby target cell. There, the ligand binds to a receptor on the target cells membrane. This is an example of _______ signaling using a _______ ligand. paracrine ; hydrophobic paracrine ; hydrophillic endocrine ; hydrophobic endocrine ; hydrophillic autocrine ; hydrophobic autocrine ; hydrophillicarrow_forward
- Relaying a message from a receptor protein to a molecule that performs a specific function within a cell is called ______. selective permeability signal transduction inhibition self-recognitionarrow_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_forwardWhich 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.arrow_forward
- During cell signaling, binding of a ligand to the outside of a cell leads to: A. A signal being sent inside the cell B. The ligand being transported into the cell C. A and B D. None of the abovearrow_forwardWhat type of cell signaling receptor is depicted below a. Cytoplasmic Receptor b. Transmembrane Receptor c. Intracellular Receptor d. Nuclear Receptorarrow_forwardHow Receptor Tyrosine Kinases activated different types of downstream proteins? (Cell signaling topic )(bio chemistry) (Cell signaling book)arrow_forward
- Which of the following signaling mechanisms is not a switch mechanism? a. Changes in phosphorylation state b. Binding of GTP c. Binding of Ca2+ ion d. Protease activityarrow_forwardHow machinery of gene regulation is controlled by cell signaling? (Cell signaling books ) (Signal transduction books)arrow_forwardParacrine 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_forward
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