Homework Answers
D. Removes phosphate group from target molecules.
Phosphatase uses water to cleave a phosphoric acid monoester into phosphate ion and alcohol. They catalyze the hydrolysis of phospho-ester bonds and releases inorganic phosphorous in the form of orthophosphates.
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Question 40 (1 point) A phosphatase is an enzyme that serves as a receptor for various...
Question 33 (1 point) Cholera is an infections disease that causes extreme diarrhea, what cell to...
Question 33 (1 point) Cholera is an infections disease that causes extreme diarrhea, what cell to cell surface receptor and subsequent confirmation change is associated with this? O G-protein linked receptor O G-protein linked receptor and an ion channel O Enzyme linked receptor and ion channel Enzyme liked receptor Question 36 (1 point) Second messengers are... small molecules that turn GTP into GDP for singal transduction small molecules that propagate a signal after it has been initiated by the signaling...
1. Alkaline phosphatase is an enzyme which a. transfers electrons to orthophosphate, converting it to elemental...
1. Alkaline phosphatase is an enzyme which a. transfers electrons to orthophosphate, converting it to elemental phosphorous b. adds a phosphate group to adenosine diphosphate c. reacts an organic phosphate compound with water, producing an alcohol and inorganic phospahte 2. In this assay for acid phosphatase activity, we use the spectrophotometer to measure the rate of appearance of a. nitrophenol, which is yellow b. potassium phosphate c. hydroxide ions, raising the pH d. protons, lowing the pH 3. The Triton...
1. In allosteric enzyme inhibition, the active site is blocked by another molecule a. True b....
1. In allosteric enzyme inhibition, the active site is blocked by another molecule a. True b. False 2. In the second-messenger system of hormonal action, a. The presence of a small amount of one hormone (the second messenger) is essential to permit another hormone (the first messenger) to exert its full effect. b. A tropic hormone (the first messenger) stimulates secretion of another hormone (the second messenger). c. The hormone first binds to a specific surface receptor (the first messenger),...
help with 7-10 Question 7 1 pts Phosphorylation of kinases in one location can result in activation, while phosphor...
help
with 7-10
Question 7 1 pts Phosphorylation of kinases in one location can result in activation, while phosphorylation in another location on the same protein can result in deactivation of the enzyme. True False Question 8 2 pts Dephosphorylation, or removal of a phosphate group, is accomplished with the help of a both kinases and phosphatases neither kinases not phosphatases phosphatase kinase Question 9 1 pts Select all of the following that act as second messengers. D DAG CAMP...
Question 45 (1 point) Put the following events in the process of signal-transduction in order: i)...
Question 45 (1 point) Put the following events in the process of signal-transduction in order: i) A conformational change in the signal-receptor complex activates an enzyme, ii) Protein kinases are activated. ill) A signal molecule binds to a receptor. iv) Target proteins are phosphorylated iii), i), ii), iv) i), ii), iii), iv) i), ill), iv), ii) iii), iv), i), ii)
Question 13 0.5 pts Protein phosphorylation is catalyzed by? Protein kinase Protein Phosphatase Antibodies Antigens None...
Question 13 0.5 pts Protein phosphorylation is catalyzed by? Protein kinase Protein Phosphatase Antibodies Antigens None of the above Question 14 0.5 pts In an aqueous solution, which amino acid will orient itself inside the center of the protein? Valine Aspartic Acid Arginine Serine Glutamine Question 15 0.5 pts Enzymes in the enzyme class "kinase": Break down nucleic acids by hydrolying bonds between nucleotides O Catalyze the addition of phosphate groups to molecules Break down proteins by hydrolyzing peptide bonds...
4. The protein shown below is an enzyme-linked receptor. This means that this protein... Circle your...
4. The protein shown below is an enzyme-linked receptor. This means that this protein... Circle your answer a) can speed up chemical reactions. b) can bind to certain signaling molecules. c) all of the above. D. Think about the enzyme-linked receptor we discussed in class. After the signaling molecules binds to this receptor, it causes the active site on the receptor to become available. What binds to this active site? E. Consider the molecule you named in the previous question....
Help with these bio questions please.Thank you 1 Secretory protein leave the cell by b Exoctossthey...
Help with these bio questions please.Thank you
1 Secretory protein leave the cell by b Exoctossthey remain in the cytoplasm c) pinocytosis d) receptor mediated 2 If proteins lack a c) Ras d) Signal-recognition particle b) Sorting signal 3 What purpose does the protein coat serve a) Capture molecules to remain in the cytosol b) Shapes the membrane into a phospholipid bilayer membrane c) Provides extra protection and support to the organelles d) none of these are correct cells response...
Question 1 (1 point)d A molecule that binds to a protein receptor in the plasma membrane,...
Question 1 (1 point)d A molecule that binds to a protein receptor in the plasma membrane, cytosol or nucleus is a cytosolic receptor modulator ligand carboxyl group protein kinase Save
Question 1 (1 point) Vasoconstriction occurs when epinephrine (adrenaline) binds to the a-adrenergic receptor on vascular...
Question 1 (1 point) Vasoconstriction occurs when epinephrine (adrenaline) binds to the a-adrenergic receptor on vascular smooth muscle cells. One way to treat high blood pressure is to administer competitive inhibitors that bind to this receptor. The Kd for binding of epinephrine to this receptor is ~UM. Based on the measured affinity (Kd) of the following drugs for the a-adrenergic receptor, which might be good candidates for high blood pressure medication? Drug A: Kd = 0.6 M; Drug B: Kd...
Question 33 (1 point) Cholera is an infections disease that causes extreme diarrhea, what cell to cell surface receptor and subsequent confirmation change is associated with this? O G-protein linked receptor O G-protein linked receptor and an ion channel O Enzyme linked receptor and ion channel Enzyme liked receptor Question 36 (1 point) Second messengers are... small molecules that turn GTP into GDP for singal transduction small molecules that propagate a signal after it has been initiated by the signaling...
help
with 7-10
Question 7 1 pts Phosphorylation of kinases in one location can result in activation, while phosphorylation in another location on the same protein can result in deactivation of the enzyme. True False Question 8 2 pts Dephosphorylation, or removal of a phosphate group, is accomplished with the help of a both kinases and phosphatases neither kinases not phosphatases phosphatase kinase Question 9 1 pts Select all of the following that act as second messengers. D DAG CAMP...
Question 45 (1 point) Put the following events in the process of signal-transduction in order: i) A conformational change in the signal-receptor complex activates an enzyme, ii) Protein kinases are activated. ill) A signal molecule binds to a receptor. iv) Target proteins are phosphorylated iii), i), ii), iv) i), ii), iii), iv) i), ill), iv), ii) iii), iv), i), ii)
Question 13 0.5 pts Protein phosphorylation is catalyzed by? Protein kinase Protein Phosphatase Antibodies Antigens None of the above Question 14 0.5 pts In an aqueous solution, which amino acid will orient itself inside the center of the protein? Valine Aspartic Acid Arginine Serine Glutamine Question 15 0.5 pts Enzymes in the enzyme class "kinase": Break down nucleic acids by hydrolying bonds between nucleotides O Catalyze the addition of phosphate groups to molecules Break down proteins by hydrolyzing peptide bonds...
4. The protein shown below is an enzyme-linked receptor. This means that this protein... Circle your answer a) can speed up chemical reactions. b) can bind to certain signaling molecules. c) all of the above. D. Think about the enzyme-linked receptor we discussed in class. After the signaling molecules binds to this receptor, it causes the active site on the receptor to become available. What binds to this active site? E. Consider the molecule you named in the previous question....
Help with these bio questions please.Thank you
1 Secretory protein leave the cell by b Exoctossthey remain in the cytoplasm c) pinocytosis d) receptor mediated 2 If proteins lack a c) Ras d) Signal-recognition particle b) Sorting signal 3 What purpose does the protein coat serve a) Capture molecules to remain in the cytosol b) Shapes the membrane into a phospholipid bilayer membrane c) Provides extra protection and support to the organelles d) none of these are correct cells response...
Question 1 (1 point)d A molecule that binds to a protein receptor in the plasma membrane, cytosol or nucleus is a cytosolic receptor modulator ligand carboxyl group protein kinase Save
Question 1 (1 point) Vasoconstriction occurs when epinephrine (adrenaline) binds to the a-adrenergic receptor on vascular smooth muscle cells. One way to treat high blood pressure is to administer competitive inhibitors that bind to this receptor. The Kd for binding of epinephrine to this receptor is ~UM. Based on the measured affinity (Kd) of the following drugs for the a-adrenergic receptor, which might be good candidates for high blood pressure medication? Drug A: Kd = 0.6 M; Drug B: Kd...
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