Homework Answers
Answer: signal reception, signal transduction and cellular
response
Explanation:
Firstly, cells release ligands which are signal molecules
(ligands), then message is received. Many events takes place in
cells after signal transduction such as cell division, activation
of enzymes, genes activated etc. This is a response of the cell
which takes places after receptor activation and signal
transduction.
Thetefore, stages of cell signalling are activation of receptor,
signal transduction and response.
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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...
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,
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.
Question 24 2.2 pts When a ligand is emitted and then sensed and responded to by...
Question 24 2.2 pts When a ligand is emitted and then sensed and responded to by nearby cells, this is known as ? e hormonal signaling o autocrine signaling paracrine signaling endocrine signaling synaptic signaling
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...
Question 20 2.2 pts Which of the following is a true statement concerning hydrophilic signaling molecules?...
Question 20 2.2 pts Which of the following is a true statement concerning hydrophilic signaling molecules? Its receptor is located in the cytoplasm of the target cell. It may trigger a signaling cascade that causes a response in the target cell. It is a steroid. After it enters the cell, it likely results in a modification of gene expression. o Its receptor typically contains a DNA-binding domain.
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?...
30. Harmful mutations in the mitochondrial genes coding for the electroe transport system would most atfect which of the processes? Choose the best answer A. oxygen diffusion ito red blood cells...
30. Harmful mutations in the mitochondrial genes coding for the electroe transport system would most atfect which of the processes? Choose the best answer A. oxygen diffusion ito red blood cells B. urine flow out of the urethra C. rapid beating of a hummingbirds wings D. formation of the phospholipid bilayer from free phospholipids E. the Calvin cycle CSLO6: AN 31. A specific poison blocks H' transport across the inner membrane of the mitochondria How will this directly affect the...
Question 8 0.5 pts Which of the following statements is false as it pertains to gene...
Question 8 0.5 pts Which of the following statements is false as it pertains to gene expression? O External cues have no impact on gene expression. O Specialized cells in a multi-cellular organism are capable of altering their patterns of gene expression in response to extracellular cues. O Different cell types can respond in different ways to the same extracellular signal. o Cortisol signals liver cells to boost the production of glucose. o Cortisol signals induce fat cells to reduce...
QUESTION 1 When cells stimulate other cells at long distances, it is referred to as: paracrine...
QUESTION 1 When cells stimulate other cells at long distances, it is referred to as: paracrine loops autocrine loops synaptic signaling endocrine signaling 1 points QUESTION 2 What region of a protein binds phosphorylated serines & tyrosines on another protein? SH2 domain ligand cAMP receptor monomers 1 points QUESTION 3 Activation of a serpentine receptor can lead to: cAMP generation GTP-binding of G proteins activation of Protein Kinase A all of the above 1 points QUESTION 4...
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,
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.
Question 24 2.2 pts When a ligand is emitted and then sensed and responded to by nearby cells, this is known as ? e hormonal signaling o autocrine signaling paracrine signaling endocrine signaling synaptic signaling
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...
Question 20 2.2 pts Which of the following is a true statement concerning hydrophilic signaling molecules? Its receptor is located in the cytoplasm of the target cell. It may trigger a signaling cascade that causes a response in the target cell. It is a steroid. After it enters the cell, it likely results in a modification of gene expression. o Its receptor typically contains a DNA-binding domain.
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?...
30. Harmful mutations in the mitochondrial genes coding for the electroe transport system would most atfect which of the processes? Choose the best answer A. oxygen diffusion ito red blood cells B. urine flow out of the urethra C. rapid beating of a hummingbirds wings D. formation of the phospholipid bilayer from free phospholipids E. the Calvin cycle CSLO6: AN 31. A specific poison blocks H' transport across the inner membrane of the mitochondria How will this directly affect the...
Question 8 0.5 pts Which of the following statements is false as it pertains to gene expression? O External cues have no impact on gene expression. O Specialized cells in a multi-cellular organism are capable of altering their patterns of gene expression in response to extracellular cues. O Different cell types can respond in different ways to the same extracellular signal. o Cortisol signals liver cells to boost the production of glucose. o Cortisol signals induce fat cells to reduce...
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