Which of the following events is considered to be a long term response to receptor activation:...
Which of the following events is considered to be a long term response to receptor activation: a. Ion channels are induced to close or open b. Motility induced c. Cell division d. Degranulation
Homework Answers
The answer is option C i.e, cell division.
Cell division and programmed cell death are considered long term responses.
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Which of the following events is considered to be a long term
response to receptor activation:...
Order the following events that occur in a neuron in response to a stimulus Sodium Potassium...
Order the following events that occur in a neuron in response
to a stimulus
Sodium Potassium Pumps and Potassium Leak Channels re-establish the resting potential Voltage Gated Potassium channels close The inside of the cell becomes more negative than the original resting potential V Voltage Gated Sodium channels open Sodium ions rush into the cell The inside of the cell becomes temporarily positive Votage Cated Potatalum channels open which causes potassium to flood out of the cell
After activation by a coupled receptor, G-proteins directly regulate which of the following? 1) Ion channels...
After activation by a coupled receptor, G-proteins directly regulate which of the following? 1) Ion channels 2) Nuclear receptor superfamily members 3) Smads 4) PKC and PKA
Chemical neurotransmitters act on receptor proteins in the membrane to open channels. In the most common...
Chemical neurotransmitters act on receptor proteins in the membrane to open channels. In the most common situation (described in class), receptor activation... a. Opens Na+ channels, depolarizing the cell b. hyperpolarizing c. Opens K+ channels, depolarizing the cell d. hyperpolarizing
In order to begin the complement activation cascade in response to an antigen like LPS from...
In order to begin the complement activation cascade in response to an antigen like LPS from bacteria, the following is needed (assume LPS does NOT contain repeating epitopes but instead has a specific epitope): Select one: O a. The CCR5 receptor, on the epithelial cell, which will bind to the T cell receptor complex on the T cell O b. The T cell receptor complex on the T cell, which will bind to the B cell receptor on the B...
QUESTION 18 Following activation of a mitogenic signaling pathway, which of these events occur to promote...
QUESTION 18 Following activation of a mitogenic signaling pathway, which of these events occur to promote cell division? a. Dephosphorylation of Retinoblastoma protein. b. Increased expression of p21. c. Phosphorylation of Myc. d. Inhibition of new protein synthesis. 1 points QUESTION 19 The slow rise of S cyclin levels throughout G1 phase is due to ___________, and the abrupt decrease is caused by ___________. a. import; export b. synthesis; mitosis c. transcription; proteolysis d. phosphorylation; translation
Alveolar ventilation would be expected to increase in response to which of the following events? A....
Alveolar ventilation would be expected to increase in response to which of the following events? A. Activation of the parasympathetic nervous system B. Activation of the sympathetic nervous system C. Secretion of acetylcholine D. Secretion of serotonin E. Both a) and c) are correct
11. To have communication between cells, you must have a A) B) C) D) receptor. signaling...
11. To have communication between cells, you must have a A) B) C) D) receptor. signaling molecule. responding cell. All of these choices are correct. 12. A cell that responds to an environmental condition by the release of a chemical is an example of which of the following elements of cellular communication? A) a signaling cell B) a signaling molecule C) a receptor protein D) a responding cell E) None of the other answer options is correct 13. A chemical...
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...
11. Acetylcholine is both an excitatory and inhibitory ligand depending on the location of its receptor....
11. Acetylcholine is both an excitatory and inhibitory ligand depending on the location of its receptor. What does Acetylcholine do that makes it "excitatory"? a. It causes a cell membrane to depolarize and produce Excitatory Post Synaptic Potentials b. It opens K+ ion channels when it binds to its receptors c. It causes a cell membrane to hyperpolarize 12. The bonding of Acetylcholine to its muscarinic receptors on smooth muscle causes gated K+ channels to close. This action is described...
Which is NOT true of RTK activation A. A dominant-negative mutation of the receptor showed that...
Which is NOT true of RTK activation A. A dominant-negative mutation of the receptor showed that autophosphorylation was possible B. Whole antibody showed that crosslinking receptors was able to activate them C. Fab fragments showed that binding alone was not what activated receptors D. Activation of the receptor is accomplished when tyrosines on the tail of the receptor are phosphorylated
Order the following events that occur in a neuron in response
to a stimulus
Sodium Potassium Pumps and Potassium Leak Channels re-establish the resting potential Voltage Gated Potassium channels close The inside of the cell becomes more negative than the original resting potential V Voltage Gated Sodium channels open Sodium ions rush into the cell The inside of the cell becomes temporarily positive Votage Cated Potatalum channels open which causes potassium to flood out of the cell
After activation by a coupled receptor, G-proteins directly regulate which of the following? 1) Ion channels 2) Nuclear receptor superfamily members 3) Smads 4) PKC and PKA
In order to begin the complement activation cascade in response to an antigen like LPS from bacteria, the following is needed (assume LPS does NOT contain repeating epitopes but instead has a specific epitope): Select one: O a. The CCR5 receptor, on the epithelial cell, which will bind to the T cell receptor complex on the T cell O b. The T cell receptor complex on the T cell, which will bind to the B cell receptor on the B...
11. To have communication between cells, you must have a A) B) C) D) receptor. signaling molecule. responding cell. All of these choices are correct. 12. A cell that responds to an environmental condition by the release of a chemical is an example of which of the following elements of cellular communication? A) a signaling cell B) a signaling molecule C) a receptor protein D) a responding cell E) None of the other answer options is correct 13. A chemical...
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...
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