The hormone glucagon initiates a signal transduction pathway that leads to the activation of Group of...
The hormone glucagon initiates a signal transduction pathway that leads to the activation of
Group of answer choices
adenylate cyclase
cyclic AMP-dependent protein kinase
phosphorylase kinase
a, b, & c
a & c
Homework Answers
Hey there,
The correct answer is a, b and c.
When Glucagon is secreted by pancreatic alpha cells, it binds to its receptor, located in the liver and kidney, which activates the heterodimeric G proteins which in turn activate adenylate cyclase enzymes.
This leads to production of cyclic AMP, which activates the protein kinase pathway, this pathway then leads to Protein Kinase phosphorylating the enzyme phosphorylase kinase and further the events go on.
Add Answer to:
The hormone glucagon initiates a signal transduction pathway
that leads to the activation of
Group of...
Arrange in proper order the events of the signal-transduction cascade for glycogen degradation in muscle. Muscle...
Arrange in proper order the events of the signal-transduction cascade for glycogen degradation in muscle. Muscle contraction begins. Phosphorolysis of glycogen yields glucose l-phosphate. Answer Bank Phosphorylase kinase is phosphorylated on its and a subunits. Intracellular CAMP levels increase, which activates protein kinase A. Epinephrine is released and binds to muscle ß-adrenergic receptors. The stimulatory G, protein dissociates and activates adenylate cyclase. Phosphorylase kinase is partly activated by binding Ca2+ Glycogen phosphorylase b is converted to glycogen phosphorylase a.
You are studying a signal transduction pathway. Activation of your pathway results in activation of transcription...
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38. Which protein is not the immediate target of glucagon-derived signal transduction events for the regulation...
38. Which protein is not the immediate target of glucagon-derived signal transduction events for the regulation of blood glucose levels? A) Glycogen phosphorylase B) Glucose-6-phosphate dehydrogenase C) Isocitrate dehydrogenase D) 6-phophofructo-2-kinase/fructose-2,6-bisphosphatase
Indicate which of the events listed below belong to which part of the signal transduction pathway.*...
Indicate which of the events listed below belong to which part of the signal transduction pathway.* (6 Points) Signal Reception Signal Transduction Cellular Response Signal Termination receptor activation causes Ga to release GDP and bind GTP 0 a bind GTP TE STEEL 0 activated protein kinase enters nucleus to promote transcription. of a specific gene 0 0 adenylyl cyclase produces CAMP from ATP 0 0 0 ooo 0 0 0 adrenaline binds adrenergic receptor 0 - 0 CAMP activates protein...
In the cAMP signal transduction pathway, a protein kinase is activated. What happens next G protein...
In the cAMP signal transduction pathway, a protein kinase is activated. What happens next G protein is activated. cAMP is converted to ATP. The protein kinase activates a cellular response. GDP is replaced by GTP. Adenylyl cyclase is activated.
Which of the following statements concerning signal transduction by the insulin receptor is NOT correct? A....
Which of the following statements concerning signal transduction by the insulin receptor is NOT correct? A. The insulin receptor substrate protein IRS-1 in its phosphorylated form activates other proteins. B. The pathway for insulin-stimulated transcription of specific genes involves the protein Ras. C. The insulin receptor phosphorylates itself in the activation process. D. Insulin stimulation of the insulin receptor initiates a cascade of events causing activation of glycogen synthase. E. The receptor protein kinase activity is specific for serine residues...
Last guy got it wrong - Thank you. 2. You discover a signal transduction pathway that...
Last guy got it wrong - Thank you.
2. You discover a signal transduction pathway that regulates actin polymerization. SigC is the ligand, which binds to and activates a receptor tyrosine kinase (RTK). Activation of the RTK leads to the activation of the Ras protein, which then activates the protein kinase PK1 that phosphorylates the RingA protein on S34. When SigC plasma membrane phosphorylated, RingA binds EXTRACELLULAR to the gene regulatory SPACE inactive Ras protein activated Ras protein protein, AP1....
Section 12.3 20) Which process is NOT a feature of visual signal transduction? e. activation of...
Section 12.3 20) Which process is NOT a feature of visual signal transduction? e. activation of a cGMP phosphodiesterase 1. replacement of all-trans-retinal catalyzed by transducin 8. light absorption by 11-cis-retinal h. change in cell membrane potential Section: 12.3 GPCRs in Vision, Olfaction, and Gustation Section 12.4 21) Receptor tyrosine kinases: e. are dimers. f. do not regulate gene expression. 8. engage in extensive cross talk with other signal transduction systems. h. bind insulin. Section: 12.4 Receptor Tyrosine kinases Section...
Signal amplification is an essential step in signal transduction. Which of the following steps of signal...
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Place in the right order the sequence of biochemical events between the release of epinephrine by...
Place in the right order the sequence of biochemical events between the release of epinephrine by the adrenal glands and the breakdown of glycogen in the liver. (1) Epinephrine is released by the adrenal glands. ( ) Activated beta-adrenergic receptors cause GTP for GDP exchange in the alpha subunits of Gs G proteins ( ) The activated catalytic subunits of PKA phosphorylate the inactive phosphorylase kinase b, activating it. ( ) Epinephrine travels in the bloodstream ( ) Two cAMP...
Arrange in proper order the events of the signal-transduction cascade for glycogen degradation in muscle. Muscle contraction begins. Phosphorolysis of glycogen yields glucose l-phosphate. Answer Bank Phosphorylase kinase is phosphorylated on its and a subunits. Intracellular CAMP levels increase, which activates protein kinase A. Epinephrine is released and binds to muscle ß-adrenergic receptors. The stimulatory G, protein dissociates and activates adenylate cyclase. Phosphorylase kinase is partly activated by binding Ca2+ Glycogen phosphorylase b is converted to glycogen phosphorylase a.
38. Which protein is not the immediate target of glucagon-derived signal transduction events for the regulation of blood glucose levels? A) Glycogen phosphorylase B) Glucose-6-phosphate dehydrogenase C) Isocitrate dehydrogenase D) 6-phophofructo-2-kinase/fructose-2,6-bisphosphatase
Indicate which of the events listed below belong to which part of the signal transduction pathway.* (6 Points) Signal Reception Signal Transduction Cellular Response Signal Termination receptor activation causes Ga to release GDP and bind GTP 0 a bind GTP TE STEEL 0 activated protein kinase enters nucleus to promote transcription. of a specific gene 0 0 adenylyl cyclase produces CAMP from ATP 0 0 0 ooo 0 0 0 adrenaline binds adrenergic receptor 0 - 0 CAMP activates protein...
In the cAMP signal transduction pathway, a protein kinase is activated. What happens next G protein is activated. cAMP is converted to ATP. The protein kinase activates a cellular response. GDP is replaced by GTP. Adenylyl cyclase is activated.
Last guy got it wrong - Thank you.
2. You discover a signal transduction pathway that regulates actin polymerization. SigC is the ligand, which binds to and activates a receptor tyrosine kinase (RTK). Activation of the RTK leads to the activation of the Ras protein, which then activates the protein kinase PK1 that phosphorylates the RingA protein on S34. When SigC plasma membrane phosphorylated, RingA binds EXTRACELLULAR to the gene regulatory SPACE inactive Ras protein activated Ras protein protein, AP1....
Section 12.3 20) Which process is NOT a feature of visual signal transduction? e. activation of a cGMP phosphodiesterase 1. replacement of all-trans-retinal catalyzed by transducin 8. light absorption by 11-cis-retinal h. change in cell membrane potential Section: 12.3 GPCRs in Vision, Olfaction, and Gustation Section 12.4 21) Receptor tyrosine kinases: e. are dimers. f. do not regulate gene expression. 8. engage in extensive cross talk with other signal transduction systems. h. bind insulin. Section: 12.4 Receptor Tyrosine kinases Section...
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