3.Cell surface receptors used in cell signalling are usually proteins that extene of the membrane to the other side of the membrane. What is the role of the extracellular part of the protein? A. binding the signalling molecule B. functioning as an enzyme C. increasing the solubility of the receptor D transmitting the signal from the target cell

3.Cell surface receptors used in cell signalling are usually proteins that extene of the membrane to the other side of the membrane. What is the role of the extracellular part of the protein? A. binding the signalling molecule B. functioning as an enzyme C. increasing the solubility of the receptor D transmitting the signal from the target cell

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter9: Cell Communication

Section: Chapter Questions

Problem 8TYK

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Similar questions

Which of the following could not elicit a signal transduction response? a. a protein kinase b. a virus mimicking a normal signal molecule c. a peptide hormone d. a steroid hormone e. a neurotransmitter
In signal transduction, which of the following is not a target protein? a. proteins that regulate gene activity b. hormones that activate the receptor c. enzymes of pathways d. transport proteins e. enzymes of cell reactions
Which of the following would not inhibit signal transduction? a. Phosphate groups are removed from proteins. b. Endocytosis acts on receptors and their bound signals. c. Receptors and signaling molecules separate. d. Receptors and bound signaling molecules enter lysosomes. e. Autophosphorylation targets the cytoplasmic portion of the receptor.
3. Hydrophobic signal molecules typically ... a) bind to receptor proteins in the cytosol. b) bind to plasma membrane receptors then move inside the cell. c) activate pathways that drive gene transcription. d) a and c e) a, b and c
6. A researcher isolates and collects a particular cell membrane protein and injects a pure solution of these proteins into a laboratory animal. The laboratory animal most likely ______. A. incorporates the proteins into its own cell membranes B. digests the proteins as a food source C. produces antibodies that bind specifically to that membrane protein D. goes into shock and die
During signal transduction (a) the cell converts an extracellular signal into an intracellular signal that leads to a change in some cell process (b) a signaling molecule directly activates or represses several genes (c) each enzyme catalyzes production of one molecule of product (d) enzymes in the signal cascade remain active until the last component of the pathway alters a cellular process (e) the signal is terminated by cyclic AMP
When growth hormone binds to an enzyme-linked receptor, (a) G proteins are amplified into a cascade of molecules (b) the enzyme portion of the receptor becomes dephosphorylated (c) the receptor becomes activated and phosphorylates signaling proteins in the cell (d) an ion channel is opened (e) an immediate signal is sent into the nucleus, and specific genes are activated or inhibited
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
3. There were a variety of different types of control methods used into today’s lab (i.e. hot sauce, mouth wash, alcohol, etc.). Which one(s) do you think will work effectively and why? Think about what part of the cell would be affected by the control and explain.
A) Draw a FtsZ mutant cell.B) Draw a MinD mutant cell.C) Draw a MinE mutant cell.
1. The four steps in the signal transduction pathway are listed below, a-d. Label the diagram above with the letters a-d to indicate where on the diagram each step is taking place, and answer the two questions below. a. Signal transmission i. Describe what is taking place during the signal transmission step. b. Reception i. Describe what is taking place during the reception step. Be sure to use the terms ligand, receptor, and target cell. C. Signal transduction d. Response
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