What molecules enable cells to respond to a specific extracellular signaling molecule? a. Specific receptor carbohydrates...
What molecules enable cells to respond to a specific extracellular signaling molecule? a. Specific receptor carbohydrates localized to the inner plasma membrane surface b. Plasma lipid bilayer c. Ion channels d. Receptors that specifically recognize and bind that particular messenger molecule
Homework Answers
Answer. (D) Receptors that specifically recognize and bind that particular messenger molecule. The extracellular signal molecule may be a growth factor, hormone, neurotransmitter and cytokine. Each extracellular matrix molecule has receptor present on the cell plasma membrane surface. When it binds with the receptor then it initiate a cascade of signal mechanism which further convey signal to the central part called nucleus which further transcribe the information.
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What molecules enable cells to respond to a specific
extracellular signaling molecule? a. Specific receptor
carbohydrates...
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...
D Question 22 2.2 pts In the process of cell signaling, the signaling molecule that is...
D Question 22 2.2 pts In the process of cell signaling, the signaling molecule that is specifically detected by the target cell o is called a signal transducer. o is called a polymer is known as a secondary messenger. is called a ligand. e terminates the signal reception If phosphorylation were inhibited, this would most affect the activity of G-protein-linked receptors. e ligand-gated ion channels. transcription factors e phosphatase enzymes. O receptor tyrosine kinases.
1)The primary function(s) of the endocrine system is/are to a. regulate fuel selection during exercise. b....
1)The primary function(s) of the endocrine system is/are to a. regulate fuel selection during exercise. b. produce and secrete hormones. c. control blood glucose levels. d. All of the above. 2) Hormone receptor specificity means that a. hormones can bind to any receptor to stimulate its effects. b. hormones must bind to an appropriate receptor specifically structured for that particular hormone. c. hormones can bind to different receptors to elicit different effects. d. receptors for each hormone only exist in...
What does a target cell require to respond to an extracellular signal molecule? Choose ONE OR...
What does a target cell require to respond to an extracellular
signal molecule?
Choose ONE OR MORE:
appropriate intracellular signaling pathways
a receptor that recognizes the signal molecule
access to the signal molecule
the appropriate machinery to produce and secrete the signal
molecule
effector molecules that alter cell behavior in response to the
signal molecule
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...
Acetylcholine is a signaling molecule that elicits responses from heart asclc cells, salivary gland cells, and...
Acetylcholine is a signaling molecule that elicits responses from heart asclc cells, salivary gland cells, and skeletal muscle cells. Which of the follow ng statements is/ ? Heart muse'e cells decrease their rate and force of contraction when they receive acetylcholine, whereas skeletal muscle cells contract Active acetylcholine receptors on salivary gland cells and heart muscle cells activate different intracellular signaling pathways. Heart muscle cells, salivary gland cells, and skeletal muscle cells all express an receptor that belongs to the-...
Which of these statements about the composition of membranes is true?
Which of these statements about the composition of membranes is true?A) All biological membranes contain cholesterol.B) Free fatty acids are major components of all membranes. C) The inner and outer membranes of mitochondria have different protein compositions.D) The lipid composition of all membranes of eukaryotic cells is essentially the same.E) The lipid: protein ratio varies from about 1: 4 to 4: 1Membrane proteins:A) ere sometimes covalently attached to lipid moieties:B) are sometimes covalently attached to carbohydrate moieties.C) are composed of...
What structures are found in the cytoplasm, near the plasma membrane, at the axonal end of...
What structures are found in the cytoplasm, near the plasma membrane, at the axonal end of neuron: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors c) Secretory vesicles d) mitochondria e) nucleus What protein is found (evenly distributed) along the entire length of the cell's plasma membrane: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors c) Secretory vesicles d) nucleus e) mitochondria Proteins found exclusively at the dendritic end of the neuron: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors...
6) In unstimulated muscle cells, the glucose transporter Glute is present in the membrane of endosomes....
6) In unstimulated muscle cells, the glucose transporter Glute is present in the membrane of endosomes. Upon stimulation of these cells with insulin, the endosomes fuse with the plasma membrane, thereby depositing Glut4 in the plasma membrane, where it serves to transport glucose into the cells. In order for insulin to elicit this change in Glute localization, insulin must bind to its receptor, present in the plasma membrane of some cells. To determine if a stem cell line can be...
Hgs is a major target of the Ire1-dependent RNA decay pathway. Mutation of a particular stem-loop...
Hgs is a major target of the Ire1-dependent RNA decay pathway. Mutation of a particular stem-loop sequence in the Hgs mRNA abolishes its degradation during ER stress. What would you conclude from this result? the stem-loop is necessary and sufficient for degradation the stem-loop is sufficient for degradation the stem-loop is necessary but not sufficient for degradation the stem-loop is necessary for degradation Which of the following processes is most likely to be affected by lysosome localization/positioning in the cell?...
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...
D Question 22 2.2 pts In the process of cell signaling, the signaling molecule that is specifically detected by the target cell o is called a signal transducer. o is called a polymer is known as a secondary messenger. is called a ligand. e terminates the signal reception If phosphorylation were inhibited, this would most affect the activity of G-protein-linked receptors. e ligand-gated ion channels. transcription factors e phosphatase enzymes. O receptor tyrosine kinases.
What does a target cell require to respond to an extracellular
signal molecule?
Choose ONE OR MORE:
appropriate intracellular signaling pathways
a receptor that recognizes the signal molecule
access to the signal molecule
the appropriate machinery to produce and secrete the signal
molecule
effector molecules that alter cell behavior in response to the
signal molecule
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...
Acetylcholine is a signaling molecule that elicits responses from heart asclc cells, salivary gland cells, and skeletal muscle cells. Which of the follow ng statements is/ ? Heart muse'e cells decrease their rate and force of contraction when they receive acetylcholine, whereas skeletal muscle cells contract Active acetylcholine receptors on salivary gland cells and heart muscle cells activate different intracellular signaling pathways. Heart muscle cells, salivary gland cells, and skeletal muscle cells all express an receptor that belongs to the-...
What structures are found in the cytoplasm, near the plasma membrane, at the axonal end of neuron: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors c) Secretory vesicles d) mitochondria e) nucleus What protein is found (evenly distributed) along the entire length of the cell's plasma membrane: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors c) Secretory vesicles d) nucleus e) mitochondria Proteins found exclusively at the dendritic end of the neuron: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors...
6) In unstimulated muscle cells, the glucose transporter Glute is present in the membrane of endosomes. Upon stimulation of these cells with insulin, the endosomes fuse with the plasma membrane, thereby depositing Glut4 in the plasma membrane, where it serves to transport glucose into the cells. In order for insulin to elicit this change in Glute localization, insulin must bind to its receptor, present in the plasma membrane of some cells. To determine if a stem cell line can be...
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