G proteins are involved whenever A. Binding of messenger molecules to cell surface receptors triggers a target cell response. B. Binding of ligand molecules to cell surface receptors triggers activation or inhibition of enzymes, C. Binding of ligand molecules to cell surface receptors triggers synthesis of second messengers, D. Binding of ligand molecules to cell surface receptors triggers a change. E. All of the above.

G proteins are involved whenever A. Binding of messenger molecules to cell surface receptors triggers a target cell response. B. Binding of ligand molecules to cell surface receptors triggers activation or inhibition of enzymes, C. Binding of ligand molecules to cell surface receptors triggers synthesis of second messengers, D. Binding of ligand molecules to cell surface receptors triggers a change. E. All of the above.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter6: Cell Communication

Section: Chapter Questions

Problem 5TYU

See similar textbooks

Similar questions

A biochemist is designing a new drug that will mimic the shape and function of a particular intercellular signaling molecule. Therefore she must produce a molecule that will bind to the receptor protein and... A. produce a cellular response by altering the Na+/K+ pump located near the receptor site. B. induce a change in the receptor molecule shape, which will ultimately prevent a cellular response. C. induce a change in the receptor molecule shape, which will ultimately produce a cellular response. D. induce a change in the phospholipid bilayer that causes a polar reversal allowing the molecules to be endocytose (engulfed).
G proteins (a) relay a message from an activated receptor to an enzyme that activates a second messenger (b) are GTP molecules (c) terminate cell signaling (d) directly activate protein kinases (e) function as first messengers
Scaffold proteins (a) release kinases and phosphatases into the extracellular fluid (b) bind G proteins to cell membranes (c) increase accuracy but slow signaling cascades (d) organize groups of intracellular signaling molecules into signaling complexes (e) are transcription factors found mainly in plant cells
Scaffold proteins (a) release kinases and phosphatases into the extracellular fluid (b) bind G proteins to cell membranes (c) increase accuracy but slow signaling cascades (d) organize groups of intracellular signaling moleculesinto signaling complexes (e) are transcription factors found mainly in plant cells
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 above
In intercellular signaling pathways, some receptor proteins can also act as a transcription factor (changing gene expression), because these receptors are ________. A) Group of answer choices B) Intracellular receptors C) Membrane bound receptors D) G protein coupled receptors E) Enzyme linked receptors F) Fast ligand-gated ion channels
a universal feature of cell signaling receptors is that they? a. undergo a structural (shape) change when the signal molecule is bound b. are present only in the plasma membrane c. are only ion channels d. are protein kinases e. aer only nuclear receptors
Paracrine signaling is characterized by ligands that are a. produced by the cell itself. b. secreted by neighboring cells. c. present on the plasma membrane of neighboring cells. d. secreted by distant cells.
Researchers use a technique call RNA interference to knock down (i.e. not completely gone) the Bcl-2 gene in the amygdala of lab animals. What cellular response would you expect to occur? Question 1 options: A) An increase in apoptosis; many cells in the area would die B) An increase in axon regrowth after injury C) A decrease in cytochrome c levels released from the mitochondria D) A decrease in glial cell infiltration after injury
For 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 specific
All cells of a multicellular organism may not respond in the same wayto a particular ligand (signaling molecule) that binds to a cell surfacereceptor. The difference in response may be due toa. the type of receptor for the ligand that the cell expresses.b the affinity of the ligand for the receptor in a given cell type.c. the type of signal transduction pathways that the cell expresses.d. the type of target proteins that the cell expresses.e. all of the above.
A researcher tested Compound A on chemotaxing cells and measured the relative amount of filamentous actin found in the cells at different times. 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. C. The cell first moved toward and then away from the signaling molecule after the addition of Compound A. D. The cell did not move toward or away from the signaling molecule after the addition of Compound A.