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163. Transgenic technology includes all of the following except... (a) factor 9 gene in sheep (b)...
26. Synthesis of a repressible enzyme is stopped by: a. the allosteric transition. b. the substrate...
26. Synthesis of a repressible enzyme is stopped by: a. the allosteric transition. b. the substrate binding to the repressor c. the corepressor (product) binding to the operator d. the corepressor-repressor (product-repressor) complex binding to the operator. e. the end-product binding to the promoter 27. Glucose effect or catabolite repression is an inhibition of the metabolism of alternative carbon sources by glucose Truel False 28. microRNA regulate gene expression on post-transcriptional level True False 29. A low rate of spontaneous...
30) E. colt' (illustrated in the figure below). Thus, the first enzyme of the pathway will...
30) E. colt' (illustrated in the figure below). Thus, the first enzyme of the pathway will have an active site that binds to the amino acid aonine and an allosteric site that binds to the amino acid s metabolic pathway synthesizing isoleucine from threonine is subject to feedback inhibition Threonine 31) You are interested in harnessing E. coli for the large scale commercial production of the amino acid isoleucine from threonine. You Enzyme A have optimized the growth conditions, but...
12. Which of the following statements is true of enzyme catalysts? A B C To be...
12. Which of the following statements is true of enzyme catalysts? A B C To be effective, they must be present at the same concentration as their substrate. They can increase the equilibrium constant for a given reaction by a thousand-fold or more. They lower the activation energy for conversion of substrate to product. Their catalytic activity is independent of pH. They are generally equally active on D and L isomers of a given substrate. D E 13. In competitive...
Enzyme 6. Where do substrates bind on an enzyme? A. allosteric site B. active site C....
Enzyme 6. Where do substrates bind on an enzyme? A. allosteric site B. active site C. receptor D. ion channel 7. Enzymes are capable of increasing the rate of a chemical reaction through which of the following means? A. changing AG from positive to negative B. reducing the activation energy C. changing the equilibrium point of the reaction D. increasing kinetic energy 8. When a molecule can occupy the same active site as the substrate, a situation called can result...
All of the following apply to enzyme structure and function EXCEPT: (choose what does not apply...
All of the following apply to enzyme structure and function EXCEPT: (choose what does not apply to the question) A. enzyme active sites function to lower the activation energy of substrate molecules B. enzymes may require coenzymes that change the shape of the active site C. enzymes increase the speed of chemical reactions D. enzymes may have allosteric sites that are used to regulate substrate-active site binding E. enzymes may require cofactors such as Ca++ that improve the binding of...
Which of the following is true about allosteric enyzmes? A) They typically catalyze the last reaction...
Which of the following is true about allosteric enyzmes? A) They typically catalyze the last reaction in a metabolic pathway since it is the critical step in the synthesis of the desired end product. B) They can have one subunit or several, depending on their catalytic needs. C) Their activity is often altered by a downstream product to form a feedback regulatory loop. D) They show a hyperbolic activity curve that increases with high levels of substrate. E) A and...
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...
biochemistry if you could please help me answer the following questions! * 1. (5 pts) Which...
biochemistry
if you could please help me answer the following questions!
* 1. (5 pts) Which of the following is a catalytic mechanism utilize by enzymes? Multiple answers may be correct. Select all that are correct. 1. Acid-base a) acid-base catalysis d. metal-ion catalysis 12. Covalent b covalent catalysis e. transition state binding c. heterogeneou 3. Metalion . Proximin onentation, E 2. 76 pts) What is the "steady-state" assumption in the derivation of the s.clectrosch? Tynsin Michaelis-Menten equation? Sie binding...
answer questions 15) An apoenzyme + cofactor(s) - a) Inhibitor b) active site c) substrate d)...
answer questions
15) An apoenzyme + cofactor(s) - a) Inhibitor b) active site c) substrate d) holoenzyme 16) Aspartate-transcarbamylase is an enveloved in a pathway that may produces molecule called Cytidine triphosphate. Cytidine triphosphate can bind to anot t o this enzyme, rendering the active site nonfunctional. This is an example of a) ATP hydrolysis b) competitive inhibition c) feedback inhibition d) allosteric activation 17) Which of the following is false regarding fermentation? a) fermentation occurs in the absence of...
Place the following mechanisms to generate ATP in order starting with the one that produces the...
Place the following mechanisms to generate ATP in order starting with the one that produces the few ATP's and ending with the one that produces the most ATP's per glucose molecule a anacrobic, fermentation, aerobic b) fermentation, aerobic, anaerobic c) acrobic, fermentation, anaerobic d) fermentation, anaerobic, acrobic e) anaerobic, aerobic, fermentation 2) Ry what type of phosphorylation are ATPs made by fermentation? a) substrate-level phosphorylation b) oxidative phosphorylation c) a combination of both types 3) This diagram represents a biochemical...
26. Synthesis of a repressible enzyme is stopped by: a. the allosteric transition. b. the substrate binding to the repressor c. the corepressor (product) binding to the operator d. the corepressor-repressor (product-repressor) complex binding to the operator. e. the end-product binding to the promoter 27. Glucose effect or catabolite repression is an inhibition of the metabolism of alternative carbon sources by glucose Truel False 28. microRNA regulate gene expression on post-transcriptional level True False 29. A low rate of spontaneous...
30) E. colt' (illustrated in the figure below). Thus, the first enzyme of the pathway will have an active site that binds to the amino acid aonine and an allosteric site that binds to the amino acid s metabolic pathway synthesizing isoleucine from threonine is subject to feedback inhibition Threonine 31) You are interested in harnessing E. coli for the large scale commercial production of the amino acid isoleucine from threonine. You Enzyme A have optimized the growth conditions, but...
12. Which of the following statements is true of enzyme catalysts? A B C To be effective, they must be present at the same concentration as their substrate. They can increase the equilibrium constant for a given reaction by a thousand-fold or more. They lower the activation energy for conversion of substrate to product. Their catalytic activity is independent of pH. They are generally equally active on D and L isomers of a given substrate. D E 13. In competitive...
Enzyme 6. Where do substrates bind on an enzyme? A. allosteric site B. active site C. receptor D. ion channel 7. Enzymes are capable of increasing the rate of a chemical reaction through which of the following means? A. changing AG from positive to negative B. reducing the activation energy C. changing the equilibrium point of the reaction D. increasing kinetic energy 8. When a molecule can occupy the same active site as the substrate, a situation called can result...
Which of the following is true about allosteric enyzmes? A) They typically catalyze the last reaction in a metabolic pathway since it is the critical step in the synthesis of the desired end product. B) They can have one subunit or several, depending on their catalytic needs. C) Their activity is often altered by a downstream product to form a feedback regulatory loop. D) They show a hyperbolic activity curve that increases with high levels of substrate. E) A and...
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...
biochemistry
if you could please help me answer the following questions!
* 1. (5 pts) Which of the following is a catalytic mechanism utilize by enzymes? Multiple answers may be correct. Select all that are correct. 1. Acid-base a) acid-base catalysis d. metal-ion catalysis 12. Covalent b covalent catalysis e. transition state binding c. heterogeneou 3. Metalion . Proximin onentation, E 2. 76 pts) What is the "steady-state" assumption in the derivation of the s.clectrosch? Tynsin Michaelis-Menten equation? Sie binding...
answer questions
15) An apoenzyme + cofactor(s) - a) Inhibitor b) active site c) substrate d) holoenzyme 16) Aspartate-transcarbamylase is an enveloved in a pathway that may produces molecule called Cytidine triphosphate. Cytidine triphosphate can bind to anot t o this enzyme, rendering the active site nonfunctional. This is an example of a) ATP hydrolysis b) competitive inhibition c) feedback inhibition d) allosteric activation 17) Which of the following is false regarding fermentation? a) fermentation occurs in the absence of...
Place the following mechanisms to generate ATP in order starting with the one that produces the few ATP's and ending with the one that produces the most ATP's per glucose molecule a anacrobic, fermentation, aerobic b) fermentation, aerobic, anaerobic c) acrobic, fermentation, anaerobic d) fermentation, anaerobic, acrobic e) anaerobic, aerobic, fermentation 2) Ry what type of phosphorylation are ATPs made by fermentation? a) substrate-level phosphorylation b) oxidative phosphorylation c) a combination of both types 3) This diagram represents a biochemical...
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