What is a lysosome? Select the single best answer. a. the cleft or groove in the...
What is a lysosome? Select the single best answer.
a. the cleft or groove in the surface of an enzyme that is the site of substrate binding
b. a hydrolytic enzyme
c. an enzyme that has an effector binding site as well as an active site
d. a membrane-bound vesicle in the cytoplasm of cells that contains approximately fifty hydrolases
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What is a lysosome? Select the single best answer.
a. the cleft or groove in the...
What is the activation energy of a reaction? Select the single best answer. the energy...
What is the activation energy of a reaction? Select the single best answer. the energy required for an enzyme to overcome competitive inhibition the energy used up by an enzyme in a reaction the energy required for a reaction to take place the energy required in order for an enzyme to catalyze a reaction What is the relationship between pepsin and pepsinogen? Select all that apply. pepsin is the inactive form of the enzyme; pepsinogen...
What is the correct answer? Please explain. Consider the kinetic plot of an enzyme catalyzed reaction...
What is the correct answer? Please explain.
Consider the kinetic plot of an enzyme catalyzed reaction to the right. Which of the following is not correct concerning the this enzyme? a. Compound stabilizes the ''R state'' of this enzyme. This enzyme exhibits ''cooperative binding'' of the substrate. This enzyme is probably composed of multiple catalytic and regulatory subunits. d. This enzyme is composed of a single polypeptide chain with one one binding site for substrate. Compound binds to a regulatory...
Select the single best answer. What is the role of cholesterol in biological membranes? A. It...
Select the single best answer. What is the role of cholesterol in biological membranes? A. It regulates the fluidity of the membrane. B. It serves as a "marker" that identifies a cell to other cells. C. It provides shape to the cell. D. It acts as a molecular signal that allows cells to communicate with each other.
Question 3 Answer saved Points out of 5 P Flag question FIND THE BEST FIT AMONG...
Question 3 Answer saved Points out of 5 P Flag question FIND THE BEST FIT AMONG THE FOLLOWING PAIRS ENZYME SUBSTRATE COMPLEX ILLUSTRATES THE INDUCED FI MODEL OF OPERATION • ENZYME COMPETITIVE INHIBITION SUBSTRATE Choose... PREVENTS SUBSTRATE BINDING VIA ACTIVE SITE INVOLVES AN ALLOSTERIC MOLECULE OF INHIBITION ILLUSTRATES THE INDUCED FIT MODEL OF OPERATION LOWERS ACTIVATION ENERGY FOR A REACTION ALWAYS CONSUMED IN AN ENZYMATIC REACTION NONCOMPETITIVE INHIBITION
For the following six questions, answer using the single best description of the following five options...
For the following six questions, answer using the single best description of the following five options a.-e. You may use each option as often as you wish, including multiple times or not at all, but each question has ONE answer. Reversible inhibitors b. Irreversible inhibitors c. Uncompetitive inhibitors d. Competitive inhibitors Non-competitive (allosteric) inhibitors inhibitors have structural similarity to substrates, intermediates, or products of the reaction catalyzed by the target enzyme blocking the active site of the enzyme. inhibitors form...
eurtansmitteenzyme found in the synaptic cleft and required for degrading a. glycosyltransferase c hemoglobin b. PDH...
eurtansmitteenzyme found in the synaptic cleft and required for degrading a. glycosyltransferase c hemoglobin b. PDH complex e.catalase d. acetylcholinesterase 44. Which of the following is a tenet of the endosymbiotic theory? a autophagolysosomes are the source of substantial protein production viruses at some time i incorporated into the mitochondrial genome engulfed bacteria may be the original source of m more than one of the above pped in vesicles in the cytoplasm contribute to the cell's ATP supply e. the...
Please answer ALL questions or I'll thumbs down! 2) Imagine an enzyme that has a histidine...
Please answer ALL questions or I'll thumbs
down!
2) Imagine an enzyme that has a histidine in the substrate binding pocket that regulates substrate binding based on its protonation state to control enzyme function. Substrates can only bind in the unprotonated state; in other words, substrate binding is blocked when the histidine is protonated and when the substrate is bound, the histidine cannot be protonated. This enzyme exhibits classical Michaelis-Menten behavior. a) Assume that the pka of the histidine in...
8. The movement of protons out of the mitochondrial matrix establishes an electrochemical H gradient across...
8. The movement of protons out of the mitochondrial matrix establishes an electrochemical H gradient across the inner mitochondrial membrane. The electrochemical potential of this gradient is harnessed to synthesize ATP. This is known as the (A) Hydrophobic effect IqChemiosmotic theory (B) Acid catalysis (0) Michaelis-Menten mechanism _9. Which of the following statements about mitochondria and their lon and metabolite transporters is FALSE? (A) Controlled impermeability of the inner mitochondrial membrane to most ions and metabolites allows for the generation...
29. Based on the endosymbiont theory which was once a free living prokaryote? A. Chloroplast B....
29. Based on the endosymbiont theory which was once a free living prokaryote? A. Chloroplast B. Golgi C. Lysosome D. rough endoplasmic reticulum E. B and D 30. Exporting large substances out of the cell can be accomplished by A. exocytosis B. facilitated diffusion C. endocytosis D. osmosis 31. Lipase is an enzyme which breaks down A. Sugar B. Proteins C. DNA D. Fats 32. Which is not true of the plasma membrane? A. Composed of triglycerides B. Has proteins...
What is a prosthetic group? Select the single best answer. a nonprotein group attached to a...
What is a prosthetic group? Select the single best answer. a nonprotein group attached to a protein, but not required in order for the protein to function a second protein group required in order for a protein to function an enzyme group required in order for a protein to function an amino acid group required in order for a protein to function an amino acid group attached to a protein, but not required in order for the protein to function...
What is the correct answer? Please explain.
Consider the kinetic plot of an enzyme catalyzed reaction to the right. Which of the following is not correct concerning the this enzyme? a. Compound stabilizes the ''R state'' of this enzyme. This enzyme exhibits ''cooperative binding'' of the substrate. This enzyme is probably composed of multiple catalytic and regulatory subunits. d. This enzyme is composed of a single polypeptide chain with one one binding site for substrate. Compound binds to a regulatory...
Question 3 Answer saved Points out of 5 P Flag question FIND THE BEST FIT AMONG THE FOLLOWING PAIRS ENZYME SUBSTRATE COMPLEX ILLUSTRATES THE INDUCED FI MODEL OF OPERATION • ENZYME COMPETITIVE INHIBITION SUBSTRATE Choose... PREVENTS SUBSTRATE BINDING VIA ACTIVE SITE INVOLVES AN ALLOSTERIC MOLECULE OF INHIBITION ILLUSTRATES THE INDUCED FIT MODEL OF OPERATION LOWERS ACTIVATION ENERGY FOR A REACTION ALWAYS CONSUMED IN AN ENZYMATIC REACTION NONCOMPETITIVE INHIBITION
For the following six questions, answer using the single best description of the following five options a.-e. You may use each option as often as you wish, including multiple times or not at all, but each question has ONE answer. Reversible inhibitors b. Irreversible inhibitors c. Uncompetitive inhibitors d. Competitive inhibitors Non-competitive (allosteric) inhibitors inhibitors have structural similarity to substrates, intermediates, or products of the reaction catalyzed by the target enzyme blocking the active site of the enzyme. inhibitors form...
eurtansmitteenzyme found in the synaptic cleft and required for degrading a. glycosyltransferase c hemoglobin b. PDH complex e.catalase d. acetylcholinesterase 44. Which of the following is a tenet of the endosymbiotic theory? a autophagolysosomes are the source of substantial protein production viruses at some time i incorporated into the mitochondrial genome engulfed bacteria may be the original source of m more than one of the above pped in vesicles in the cytoplasm contribute to the cell's ATP supply e. the...
Please answer ALL questions or I'll thumbs
down!
2) Imagine an enzyme that has a histidine in the substrate binding pocket that regulates substrate binding based on its protonation state to control enzyme function. Substrates can only bind in the unprotonated state; in other words, substrate binding is blocked when the histidine is protonated and when the substrate is bound, the histidine cannot be protonated. This enzyme exhibits classical Michaelis-Menten behavior. a) Assume that the pka of the histidine in...
8. The movement of protons out of the mitochondrial matrix establishes an electrochemical H gradient across the inner mitochondrial membrane. The electrochemical potential of this gradient is harnessed to synthesize ATP. This is known as the (A) Hydrophobic effect IqChemiosmotic theory (B) Acid catalysis (0) Michaelis-Menten mechanism _9. Which of the following statements about mitochondria and their lon and metabolite transporters is FALSE? (A) Controlled impermeability of the inner mitochondrial membrane to most ions and metabolites allows for the generation...
29. Based on the endosymbiont theory which was once a free living prokaryote? A. Chloroplast B. Golgi C. Lysosome D. rough endoplasmic reticulum E. B and D 30. Exporting large substances out of the cell can be accomplished by A. exocytosis B. facilitated diffusion C. endocytosis D. osmosis 31. Lipase is an enzyme which breaks down A. Sugar B. Proteins C. DNA D. Fats 32. Which is not true of the plasma membrane? A. Composed of triglycerides B. Has proteins...
What is a prosthetic group? Select the single best answer. a nonprotein group attached to a protein, but not required in order for the protein to function a second protein group required in order for a protein to function an enzyme group required in order for a protein to function an amino acid group required in order for a protein to function an amino acid group attached to a protein, but not required in order for the protein to function...
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