During neuronal transduction, neurotransmitters are released through__
a. regulated exocytosis
b. constitute exocytosis
c. ligand-gated channel
d. active transporter
ANSWER :
During the neuronal transduction, when an action potential reach to the terminal end of axon, it triggers the Ca++ and lead to further release of neurotransmitters (e.g.- acetylcholine) from synaptic vesicles into the synaptic cleft. This process is termed as regulated exocytosis because it requires an external signal to trigger the increase Ca++ in the intracellular matrix. Hence option (a) is the correct answer.
During neuronal transduction, neurotransmitters are released through__ a. regulated exocytosis b. constitute exocytosis c. ligand-gated channel...
Multiple Choice Electrical signals reaching the axon terminal causes A) Exocytosis of neurotransmitters into synaptic cleft B) Opening of ligand gated Ca channels C) IPSP or EPSP at axon terminal D) Release of neurotransmitter
Question 5 3 pts Regulated secretion of neurotransmitters is accomplished in part by membrane fusion allows Upon A) sorting in the TGN, clathrin coat formation, exocytic vesicles to merge with the plasma membrane O B) inhibition of SNARE interactions, opening of voltage-gated Ca2+ channels, release of vesicle contents C) COPI-coated vesicles, merging with vesicular tubular clusters, O-linked glycosylation of cargo D) the recycling endosome, invagination of endosome membrane, formation of a multivesicular body 3 pts Question 6
B C). F Fotch G I Anind A [Choose) B [Choose ] Acetyl-choline gated sodium channels open, causing a graded potential on the sarcolemma An action potential moves across the sarcolemma and down the t-tubules An action potential arrives in the muscle cell via gap junctions The calcium ATPase is always active Ca++ is released from the sarcoplasmic reticulum through the opening of voltage gated calcium channels (DHP- Calcium diffuses through the cytosol and binds with troponin Acetylcholine binds with...
Neurotransmitters are released into locations called A. Axon Hillocks B. Glial Grooves C. Neuron somas D. Synapses E. Subarachnoid spaces
Assume a mutation of the gene coding for the voltage-gated sodium channel resulted in channels that do not have the ball and chain part of the protein. Which of the following would you expect to see? a. A change in the ion selectivity of the channel of the mutated channels, allowing ions other than sodium to move through it. b. A change in the voltage sensitivity of the channel so that it does not open until more depolarized voltages. c....
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...
34. Side A of a Beaker contains 500 mOsmols/liter. Side B of the beaker contains 100 m/Osmols/liter. A membrane permeable only to water is placed between Side A and B. Describe what will happen. a. Water will move by osmosis from side A to B b. Water will move by osmosis from side B to A c. Water will move from the hypertonic side to the hypotonic side d. Solute will move from side A to side B 35. The...
Animal Viruses are released from the host cell by which method A. Budding B. Lysis C. Exocytosis D. All of the above . E. None of the above
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...
Part a)
Part b)
Part c)
In contrast to the small-molecule neurotransmitters, where are peptide transmitters fully synthesized? Select one: a. The axon hillock. b. The cell body. c. The dendritic spine. d. The axon terminal. A glomeruleus contains the dendrites of mitral cells and the axon terminals from olfactory receptor cells. What best describes the innervation pattern from the olfactory receptor neurons to the mitral cells? Select one: a. One-to-one. b. Convergent. c. Congruent. d. Divergent Which transmembrane domains...