Chemistry Exam > Chemistry Questions > For the Metalloprotein Hemerythrin, the state...
Start Learning for Free
For the Metalloprotein Hemerythrin, the statement that is not true is:
- a)Unlike hemoglobin, most hemerythrins lack cooperative binding to oxygen
- b)Hemerythrin affinity for carbon monoxide (CO) is actually lower than its affinity for O2
- c)A hydroxyl group serves as a bridging ligand but also functions as a proton donor to the O2 substrate.
- d)All
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
For the Metalloprotein Hemerythrin, the statement that is not true is:...
-Metalloprotein is a generic term for a protein that contains a metal ion cofactor.
View all questions of this test
-emerythrin is a non-heme iron protein used by two phyla of marine invertebrates (sipunculids and brachiopods) for oxygen transfer and/or storage. It differs from the other oxygen-binding proteins (hemoglobin and hemocyanin) both in the polypeptide chain and in the metal complex used to reversibly bind dioxygen.
-Hemerythrin and myohemerythrin are essentially colorless when deoxygenated, but turn a violet-pink in the oxygenated state. Hemerythrin does not, as the name might suggest, contain a heme.
Most Upvoted Answer
For the Metalloprotein Hemerythrin, the statement that is not true is:...
The Metalloprotein Hemerythrin:
Hemerythrin is a metalloprotein that contains heme and iron as its prosthetic group. It is found in some marine invertebrates and functions as an oxygen-binding protein. Here are some statements about Hemerythrin:
a) Unlike hemoglobin, most hemerythrins lack cooperative binding to oxygen:
- Cooperative binding refers to the phenomenon where the binding of one oxygen molecule to the protein enhances the binding of subsequent oxygen molecules.
- Hemoglobin exhibits cooperative binding, which allows it to pick up and release oxygen more efficiently.
- Hemerythrins, on the other hand, do not exhibit cooperative binding to oxygen to the same extent as hemoglobin.
- This statement is true.
b) Hemerythrin affinity for carbon monoxide (CO) is actually lower than its affinity for O2:
- Carbon monoxide (CO) is a toxic gas that binds to hemeproteins with high affinity, often displacing oxygen and causing hypoxia.
- Hemerythrin, like other heme proteins, can bind to CO and form a stable complex.
- However, the affinity of hemerythrin for CO is actually lower than its affinity for oxygen.
- This statement is true.
c) A hydroxyl group serves as a bridging ligand but also functions as a proton donor to the O2 substrate:
- Hemerythrin contains two iron atoms, each coordinated to a heme group and a hydroxyl group.
- The hydroxyl groups serve as bridging ligands, linking the two iron atoms together.
- When oxygen binds to one of the iron atoms, the hydroxyl group on the other iron atom donates a proton to the oxygen molecule, facilitating its binding and activation.
- This statement is true.
d) All:
- This statement is not true because statements a, b, and c are true, but not all statements are true.
Hemerythrin is a metalloprotein that contains heme and iron as its prosthetic group. It is found in some marine invertebrates and functions as an oxygen-binding protein. Here are some statements about Hemerythrin:
a) Unlike hemoglobin, most hemerythrins lack cooperative binding to oxygen:
- Cooperative binding refers to the phenomenon where the binding of one oxygen molecule to the protein enhances the binding of subsequent oxygen molecules.
- Hemoglobin exhibits cooperative binding, which allows it to pick up and release oxygen more efficiently.
- Hemerythrins, on the other hand, do not exhibit cooperative binding to oxygen to the same extent as hemoglobin.
- This statement is true.
b) Hemerythrin affinity for carbon monoxide (CO) is actually lower than its affinity for O2:
- Carbon monoxide (CO) is a toxic gas that binds to hemeproteins with high affinity, often displacing oxygen and causing hypoxia.
- Hemerythrin, like other heme proteins, can bind to CO and form a stable complex.
- However, the affinity of hemerythrin for CO is actually lower than its affinity for oxygen.
- This statement is true.
c) A hydroxyl group serves as a bridging ligand but also functions as a proton donor to the O2 substrate:
- Hemerythrin contains two iron atoms, each coordinated to a heme group and a hydroxyl group.
- The hydroxyl groups serve as bridging ligands, linking the two iron atoms together.
- When oxygen binds to one of the iron atoms, the hydroxyl group on the other iron atom donates a proton to the oxygen molecule, facilitating its binding and activation.
- This statement is true.
d) All:
- This statement is not true because statements a, b, and c are true, but not all statements are true.
|
Explore Courses for Chemistry exam
|
|
Similar Chemistry Doubts
For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer?
Question Description
For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer?.
For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer?.
Solutions for For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
Download more important topics, notes, lectures and mock test series for Chemistry Exam by signing up for free.
Here you can find the meaning of For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice For the Metalloprotein Hemerythrin, the statement that is not true is:a)Unlike hemoglobin, most hemerythrins lackcooperative bindingto oxygenb)Hemerythrin affinity forcarbon monoxide(CO) is actually lower than its affinity for O2c)Ahydroxylgroup serves as abridging ligandbut also functions as a proton donor to the O2substrate.d)AllCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Chemistry tests.
|
|
Explore Courses for Chemistry exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup