Homework Answers
22)the signaling molecule is called ligand
#)receptor tyrosine kinase.Ligand binding leads
to activation of the intrinsic protein-tyrosine kinase activity of the receptor and autophosphorylation of tyrosine residue in its cytosolic domain.if phosphorylation id inhibited no activation of the receptor.
Add Answer to:
D Question 22 2.2 pts In the process of cell signaling, the signaling molecule that is...
Question 26 2.2 p The phosphorylation of specific amino acids is a characteristic of the cell...
Question 26 2.2 p The phosphorylation of specific amino acids is a characteristic of the cell producing the ligand. e a class of GTP G-protein signal receptors. secondary messengers. receptor tyrosine kinases. transcription factors. Signal transduction is initiated O when the chemical signal is released from the signaling cell. o when the signal molecule alters the receptor protein in some way. o after the target cell divides. after the ligand is degraded. o when the receptor protein is synthesized.
1. In paracrine signaling, the signaling molecules affects only: Target cells close to the cell from...
1. In paracrine signaling, the signaling molecules affects only: Target cells close to the cell from which it was secreted a. b. Target cells distant from its site of synthesis in cells of an endocrine organ Both a. and b. с. d. None of these 2. Below are listed the events that occur in cell to cell communication. Signal transduction occurs 1. 2. Plasma membrane receptor binds with a ligand A cellular response is effected 3. 4. Ligand is released...
A. B. C. D. E. F. Thank you receptors induce activation of adenlyate cyclase, which creates...
A. B. C. D. E. F. Thank you
receptors induce activation of adenlyate cyclase, which creates the second messenger(s) O G-Protein Coupled, CAMP O Tyrosine Kinase, CAMP OTyrosine Kinase, IP3 and DAG G-Protein Coupled, IP3 and DAG Which of the following is most likely to be activated by a small hydrophobic signal? OIntracellular receptor Receptor Tyrosine Kinase O G-Protein Coupled Receptor Ligand-Gated lon Channel Which of the following types of receptors require dimerization for activation? (Select any/all that apply) OLigand-gated...
Question 29 2.2 pts Which of the following indicates the stages of cell signaling after the...
Question 29 2.2 pts Which of the following indicates the stages of cell signaling after the ligand has been produced? o the paracrine, local, and synaptic stages. signal reception, signal transduction, and cellular response. o signal reception, nucleus disintegration, and new cell generation o the alpha, beta, and gamma stages signal reception, cellular response and cell division
Question 29 2.2 pts Which of the following indicates the stages of cell signaling after the...
Question 29 2.2 pts Which of the following indicates the stages of cell signaling after the ligand has been produced? the paracrine, local, and synaptic stages signal reception, signal transduction and cellular response signal reception, nucleus disintegration and new cell generation the alpha, beta, and gamma stages, e signal reception, cellular response, and cell division,
8- Which of the following can be activated by an inhibitory neurotransmiter on the postsynagtie a....
8- Which of the following can be activated by an inhibitory neurotransmiter on the postsynagtie a. Ligand-gated Na·Channels. b. Voltage-gated Na channels c. Voltage-gated K' channels d. Voltage-gated CaChannels Ligand-gated CT channels. 9- Saltatory conduction occurs when a. Sodium ions levels are highest b. Gated-sodium channels open c. The resting potential fails to be reset d. There is no synapse and the axon is continuous with the next dendrite e. The action potential jumps from node to node on a...
2. The following is a description of a signaling pathway initiated by receptor tyrosine kinases. Ligand → RTK → Sos → Ras → Raf → MEK → ERK → Transcription factor → Cell growth A. (3pts) Which of the...
2. The following is a description of a signaling pathway initiated by receptor tyrosine kinases. Ligand → RTK → Sos → Ras → Raf → MEK → ERK → Transcription factor → Cell growth A. (3pts) Which of these steps indicates the protein is activated after a GTP exchange step? B. (3pts) Which of these proteins can be deactivated by phosphatases? C. (4pts) Describe a mutation that would cause Ras to be permanently "on"? Would this mutation lead to high...
6. Lipid-soluble signaling molecules, such as testosterone, cross the plasma membranes of all cells A) by...
6. Lipid-soluble signaling molecules, such as testosterone, cross the plasma membranes of all cells A) by diffusion but affect only target cells because only target cells retain the appropriate DNA segments. B) by diffusion but affect only target cells because only target cells have the intracellular receptors for testosterone. C) through hydrophilic channels of transmembrane proteins but affect only target cells because only target cells retain the appropriate DNA segments. D) through hydrophilic channels of transmembrane proteins but affect only...
Drosopholia eye development is an example of cell differentiation directed by signal binding to a receptor...
Drosopholia eye development is an example of cell differentiation directed by signal binding to a receptor tyrosine kinase (RTK). In this pathway, R7 photoreceptor development requires a receptor (SEV, sevenless), which is activated by binding to a plasma membrane bound signal (BOSS, bride-of-sevenless) displayed on the adjacent R8 cell Receptor activation leads to activation of RAS via two proteins, Drk (down- stream of receptor kinases) and Sos (son-of-sevenless). Activated RAS leads to activation of a phosphorylation cascade that activates the...
32. Study the signaling pathway illustrated below, which involves two different receptors. Assume that a protein...
32. Study the signaling pathway illustrated below, which involves two different receptors. Assume that a protein is active only when it is activated, but not inhibited, by its upstream signaling molecules. Activation and inhibition are indicated by normal and blunt arrows, respectively. Assume that the transcription regulator can be activated by either the binding protein or the kinase that are immediately upstream of the transcription factor. Under which of the following conditions will the expression of target:gene "X" be induced?...
Question 26 2.2 p The phosphorylation of specific amino acids is a characteristic of the cell producing the ligand. e a class of GTP G-protein signal receptors. secondary messengers. receptor tyrosine kinases. transcription factors. Signal transduction is initiated O when the chemical signal is released from the signaling cell. o when the signal molecule alters the receptor protein in some way. o after the target cell divides. after the ligand is degraded. o when the receptor protein is synthesized.
1. In paracrine signaling, the signaling molecules affects only: Target cells close to the cell from which it was secreted a. b. Target cells distant from its site of synthesis in cells of an endocrine organ Both a. and b. с. d. None of these 2. Below are listed the events that occur in cell to cell communication. Signal transduction occurs 1. 2. Plasma membrane receptor binds with a ligand A cellular response is effected 3. 4. Ligand is released...
A. B. C. D. E. F. Thank you
receptors induce activation of adenlyate cyclase, which creates the second messenger(s) O G-Protein Coupled, CAMP O Tyrosine Kinase, CAMP OTyrosine Kinase, IP3 and DAG G-Protein Coupled, IP3 and DAG Which of the following is most likely to be activated by a small hydrophobic signal? OIntracellular receptor Receptor Tyrosine Kinase O G-Protein Coupled Receptor Ligand-Gated lon Channel Which of the following types of receptors require dimerization for activation? (Select any/all that apply) OLigand-gated...
Question 29 2.2 pts Which of the following indicates the stages of cell signaling after the ligand has been produced? o the paracrine, local, and synaptic stages. signal reception, signal transduction, and cellular response. o signal reception, nucleus disintegration, and new cell generation o the alpha, beta, and gamma stages signal reception, cellular response and cell division
Question 29 2.2 pts Which of the following indicates the stages of cell signaling after the ligand has been produced? the paracrine, local, and synaptic stages signal reception, signal transduction and cellular response signal reception, nucleus disintegration and new cell generation the alpha, beta, and gamma stages, e signal reception, cellular response, and cell division,
8- Which of the following can be activated by an inhibitory neurotransmiter on the postsynagtie a. Ligand-gated Na·Channels. b. Voltage-gated Na channels c. Voltage-gated K' channels d. Voltage-gated CaChannels Ligand-gated CT channels. 9- Saltatory conduction occurs when a. Sodium ions levels are highest b. Gated-sodium channels open c. The resting potential fails to be reset d. There is no synapse and the axon is continuous with the next dendrite e. The action potential jumps from node to node on a...
2. The following is a description of a signaling pathway initiated by receptor tyrosine kinases. Ligand → RTK → Sos → Ras → Raf → MEK → ERK → Transcription factor → Cell growth A. (3pts) Which of these steps indicates the protein is activated after a GTP exchange step? B. (3pts) Which of these proteins can be deactivated by phosphatases? C. (4pts) Describe a mutation that would cause Ras to be permanently "on"? Would this mutation lead to high...
6. Lipid-soluble signaling molecules, such as testosterone, cross the plasma membranes of all cells A) by diffusion but affect only target cells because only target cells retain the appropriate DNA segments. B) by diffusion but affect only target cells because only target cells have the intracellular receptors for testosterone. C) through hydrophilic channels of transmembrane proteins but affect only target cells because only target cells retain the appropriate DNA segments. D) through hydrophilic channels of transmembrane proteins but affect only...
Drosopholia eye development is an example of cell differentiation directed by signal binding to a receptor tyrosine kinase (RTK). In this pathway, R7 photoreceptor development requires a receptor (SEV, sevenless), which is activated by binding to a plasma membrane bound signal (BOSS, bride-of-sevenless) displayed on the adjacent R8 cell Receptor activation leads to activation of RAS via two proteins, Drk (down- stream of receptor kinases) and Sos (son-of-sevenless). Activated RAS leads to activation of a phosphorylation cascade that activates the...
32. Study the signaling pathway illustrated below, which involves two different receptors. Assume that a protein is active only when it is activated, but not inhibited, by its upstream signaling molecules. Activation and inhibition are indicated by normal and blunt arrows, respectively. Assume that the transcription regulator can be activated by either the binding protein or the kinase that are immediately upstream of the transcription factor. Under which of the following conditions will the expression of target:gene "X" be induced?...
Most questions answered within 3 hours.
-
1. convert the following number of to minheap using min heap
down.
for (k=n/2;k>0;k--)
minheapdn;
array:...
asked 11 minutes ago -
biochem question
1. Distinguish between β-barrel and α-helical structures used
for membrane transport
asked 13 minutes ago -
1.
Without changing the chemical composition of a material, how can
you change the properties of...
asked 13 minutes ago -
Using 3 digital pins as binary bits, the user should have the
ability to select a...
asked 19 minutes ago -
A cruise ship with a mass of 1.33 ✕ 107 kg strikes a pier at a...
asked 32 minutes ago -
a red ball of mass m and a blue ball of mass 2m have
the same...
asked 35 minutes ago -
Use the systematic treatment of equilbria to determine the pH of
a 50 mM solution of...
asked 36 minutes ago -
C++ Programming: Customer file
Can same one help me out with a example finsih and working...
asked 53 minutes ago -
You look at the hourly salary (in USD/hour) of employees
at 2 different companies in Antwerp....
asked 54 minutes ago -
what are some of the reinforcers do yoh respond to that shapes your
behaviors (negative and...
asked 53 minutes ago -
in
the laboratory, a student measured the pH of a 0.463 M aqueous
solution of diethylamine,...
asked 1 hour ago -
Information about Q-mart's inventory appears in the following
table. When LCM is applied to the whole...
asked 1 hour ago