What is Life? A Guide to Biology with Physiology
3rd Edition
ISBN: 9781464157745
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 24, Problem 6MC
Summary Introduction
Introduction:
Steroid hormones are a group of lipid based signal chemicals that exert their effect fairly quickly, when compared to other types of hormones.
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4) Myostatin-PTC
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6) Nucleosome-acetylations, methylations
a) translational
b) transcriptional
c) post-translational
d) post-transcriptional
The receptors for lipid-soluble signaling molecule, such as steroid hormones, are located:
A) in the nucleus of the target cell
B) in the cytoplasm of the target cell
C) in the bloodstream
D) inserted into the membrane of the target cell
E) Lipid-insoluble hormones do not need receptors
The one i have to use to answer these questions are Prolactin please :)
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What is Life? A Guide to Biology with Physiology
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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
- The hormones known as "catecholamines" (adrenaline, noradrenaline, and dopamine) are not lipid-soluble. Therefore their receptor sites are: O a) On the inside of the plasma membrane O b) On the outside of the plasma membrane O c) In the cell cytoplasm O d) In the cell nucleusarrow_forwardAlthough insulin initially acts through a tyrosine kinase receptor it also subsequently results in activation of a Ser/Thr protein kinase. Which one? A) Protein kinase A B) Protein kinase B C) Protein kinase C D) Ras E) Phosphoinositide-3-kinasearrow_forwardSignaling by tyrosine kinase receptors is generally associated with all of the following except: OA) receptor dimerization B) growth factor responses C) heterotrimeric G proteins OD) cross phosphorylation E) generating protein binding sites due to phosphorylationarrow_forward
- Which signaling molecule or molecules bind to a G-protein coupled receptor? (note: there may or may not be more then one answer) a) cortisol b) insulin c) glucagon d) calcium e) cyclic AMP f) epinephrinearrow_forward4. Receptors for steroid hormones … a) are typically expressed on the plasma membrane. b) are ligand-activated transcription factors. c) are associated with trimeric G-proteins. d) a and c e) a, b and carrow_forwardSignaling by tyrosine kinase receptors is generally associated with all of the following except: A) receptor dimerization B) growth factor responses C) heterotrimeric G proteins D) cross phosphorylation E) generating protein binding sites due to phosphorylationarrow_forward
- Which of the following statements is true? Question 2 options: a) All cells will respond to the hormonal signal because hormones are broadcast throughout the body. b) The regulation of inflammatory responses at the site of an infection is an example of paracrine signaling. c) Paracrine signaling involves the secretion of stimuli into the bloodstream for distribution throughout the organism. d) The axons of neurons typically signal target cells using membrane-bound signaling molecules that act on receptors in the target cells.arrow_forwardCellular signaling follows a cascade of events and has multiple points of regulation. Which of the following could be a reason(s) why a signalling cascade is interrupted, or turned 'off', once it has been turned 'on'? A) a protein gets tagged with an ubiqutin group and gets degraded B) a chemical modification occurred on serine, threonine, or tyrosine side chains to turn on/off proteins C) allosteric regulation causes an active site to be hidden D) All of the other answers are correct E) The ligand is prevented from reaching the binding sitearrow_forwardWhat is the purpose of having a sex hormone binding protein within the blood stream? What is the purpose of having a specific receptor for estrogen within the cell? The estrogen receptor binding domain has many known mutations that effect estrogen binding and result in breast cancer. One particular mutation found at aspartic acid is changed to glycine in cancer patients. Draw a potential interaction with the side chain of this aspartic acid with estrogen (name and label it) and how a mutation to glycine could affect this ability to efficiently bind to estrogen. 6.arrow_forward
- Fat-soluble signaling molecules cross the cell membrane; but they affect only the target cells because: A) Only in target cells is the signaling molecule capable of initiating the phosphorylation chain that activates ion channels. B) only target cells have enzymes that break down the signaling molecule C) intracellular receptors are present only on target cells D) only targets have the appropriate DNA segmentsarrow_forwardSelect any of the regulator mechanisms that would amplify cAMP signaling. A) Cell produces more adenylyl cyclase B) Cell produces more phosphodiesterase C) A drug inhibits phosphodiesterase D) A drug inhibits phospholipasearrow_forwardOne such laboratory study investigated the binding of a hormone to three different receptor proteins in the cell membrane. The data collected are shown in the table below 1) Provide a brief explanation as to why ligand binding toproteins must be a reversible process. 2) Calculate the dissociation constant (Kd) for the hormone binding to each of the three proteins.arrow_forward
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