Under what circumstances may the enzyme arginase in the liver change its shape and become inactive?...
Under what circumstances may the enzyme arginase in the liver change its shape and become inactive?
Select the correct answer below:
when the pH is 9.7
when the pH is around 7.4
when the pH is around 12.0
B and C
Homework Answers
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Under what circumstances may the enzyme arginase in the liver
change its shape and become inactive?...
D Each enzyme is specihic of and because its shape catalyzes on certain reactions. The chemical reactions taking place in a cell will most likely speed up if the 3. A genetic material stops re...
D Each enzyme is specihic of and because its shape catalyzes on certain reactions. The chemical reactions taking place in a cell will most likely speed up if the 3. A genetic material stops replicating. B the size of the cell increases. C the enzymes involved become inactive. D the concentration of the reactants is increased. 4. Enzymes A are able to heat up molecules so that they can react B provide CO2 for chemical reactions. C are biological catalysts....
An enzyme works well as a catalyst at a pH of 6.8. The pk of an...
An enzyme works well as a catalyst at a pH of 6.8. The pk of an essential catalytic residue is known to be 7.2 It is found that catalytic activity is significantly lower when pH= 8.1. What is likely the cause of the decrease in activity? Select all that apply. Select one or more: a. Glu or Asp must lose a proton to inactivate the protein, b. The protein has changed shape due to a change in charge. c. His...
Under what circumstances may it make sense Not to prepare a business forecast? （ ） A) ...
Under what circumstances may it make sense Not to prepare a business forecast? （ ） A) No data is readily available. B) The future will be completely different from the past. C) The forecast horizon is 40 years. D) The industry to forecast is undergoing dramatic change.
Penicillin is hydrolyzed and thereby rendered inactive by penicillinase (also known as β-lactamase), an enzyme present...
Penicillin is hydrolyzed and thereby rendered inactive by
penicillinase (also known as β-lactamase), an enzyme present in
some resistant bacteria. The amount of penicillin hydrolyzed in 1
minute in a 10-ml solution containing 10-13 moles of
purified penicillinase was measured as a function of the
concentration of penicillin. Assume that the concentration of
penicillin does not change appreciably during the assay.
I got the right answers for the first two parts but I can't
figure out how to find the...
here is the diagram ecause there is no repressor protein attached to the operator, what enzyme...
here is the diagram
ecause there is no repressor protein attached to the operator, what enzyme con attach to the promoter and move past the operator to transcribe the structural genes? Color this enzyme pink "color the repressor gene purple and the repressor protein it codes for red. Examine the shape of the repressor protein. 45) Is it an active or inactiverepressor protein? The diagram below shows the trp operon when turned off." Repressor gene Promoter Operator Structural genes DNA...
Which of the following adjectives could be reasonably used to represent the shape of a d-orbital?...
Which of the following adjectives could be reasonably used to represent the shape of a d-orbital? There may be more than one correct answer. A correct answer earns points, while an incorrect answer results in a reduction of points earned. Select one or more: a. spherical b. cloverleaf shaped c. a figure eight with a ring around its middle d. wagon wheel shaped with many spokes e. a figure eight
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...
A researcher has developed an experiment to measure the activity of an important liver enzyme. She...
A researcher has developed an experiment to measure the activity of an important liver enzyme. She adds the substrate for the enzymatic reaction to the dish of cells, then measures the appearance of the reaction products. The results are graphed as the amount of product on the y axis versus time on the x axis. The researcher noted four sections of the graph. For a short period of time, no products appeared (section A). In section B, the reaction rate...
2- under what circumstances may an IRS agent use indirect methods? 3- which of the following...
2- under what circumstances may an IRS agent use indirect methods? 3- which of the following is nota major indirect method? a. net worth b. cash-t c.balance sheet evaluation d. source and application of funds 5-describe the cash-T method 26- you are investigating possible hidden income in a divorce dispute involving an automobile repair shop with five bays. There are five mechanics, charging approximately $60 per hour for 7 hours per day. Assume 315 days worked with each person's wage...
In plain language, describe what the oxygen-hemoglobin dissociation curve shows. Under normal conditions, the curve can...
In plain language, describe what the oxygen-hemoglobin
dissociation curve shows. Under normal conditions, the curve can
shift to the right and left. A right shift can be induced by
increased temperature and lower pH among other things. Describe
what a right shift means in terms of hemoglobin’s relationship to
oxygen. In your answer, be sure you address what is actually
happening at the level of the protein (hemoglobin is a protein).
Discuss what types of molecular interactions that can cause...
D Each enzyme is specihic of and because its shape catalyzes on certain reactions. The chemical reactions taking place in a cell will most likely speed up if the 3. A genetic material stops replicating. B the size of the cell increases. C the enzymes involved become inactive. D the concentration of the reactants is increased. 4. Enzymes A are able to heat up molecules so that they can react B provide CO2 for chemical reactions. C are biological catalysts....
An enzyme works well as a catalyst at a pH of 6.8. The pk of an essential catalytic residue is known to be 7.2 It is found that catalytic activity is significantly lower when pH= 8.1. What is likely the cause of the decrease in activity? Select all that apply. Select one or more: a. Glu or Asp must lose a proton to inactivate the protein, b. The protein has changed shape due to a change in charge. c. His...
Penicillin is hydrolyzed and thereby rendered inactive by
penicillinase (also known as β-lactamase), an enzyme present in
some resistant bacteria. The amount of penicillin hydrolyzed in 1
minute in a 10-ml solution containing 10-13 moles of
purified penicillinase was measured as a function of the
concentration of penicillin. Assume that the concentration of
penicillin does not change appreciably during the assay.
I got the right answers for the first two parts but I can't
figure out how to find the...
here is the diagram
ecause there is no repressor protein attached to the operator, what enzyme con attach to the promoter and move past the operator to transcribe the structural genes? Color this enzyme pink "color the repressor gene purple and the repressor protein it codes for red. Examine the shape of the repressor protein. 45) Is it an active or inactiverepressor protein? The diagram below shows the trp operon when turned off." Repressor gene Promoter Operator Structural genes DNA...
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...
In plain language, describe what the oxygen-hemoglobin
dissociation curve shows. Under normal conditions, the curve can
shift to the right and left. A right shift can be induced by
increased temperature and lower pH among other things. Describe
what a right shift means in terms of hemoglobin’s relationship to
oxygen. In your answer, be sure you address what is actually
happening at the level of the protein (hemoglobin is a protein).
Discuss what types of molecular interactions that can cause...
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