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The steps in catalytic cycle of an enzyme action are given in random order.
(i) The enzyme releases the products. Now enzyme is free to bind another substrate.
(ii) The active sites, now in close proximity of substrate breaks the bond of substrate and forms E-P complex.
(iii) Binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate.
(iv) The substrate binds to the active site of enzyme (i.e., fitting into the active site).
(i) The enzyme releases the products. Now enzyme is free to bind another substrate.
(ii) The active sites, now in close proximity of substrate breaks the bond of substrate and forms E-P complex.
(iii) Binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate.
(iv) The substrate binds to the active site of enzyme (i.e., fitting into the active site).
- a)(i), (ii), (iii), (iv)
- b)(iv), (iii), (ii), (i)
- c)(i), (iii), (ii), (iv)
- d)(i), (ii), (iv), (iii)
Correct answer is option 'B'. Can you explain this answer?
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The steps in catalytic cycle of an enzyme action are given in random o...
The correct answer is option B (iv), (iii), (ii), (i).
The catalytic cycle of an enzyme action involves several steps that occur in a specific order. Let's break down each step and explain why option B is the correct sequence.
1. Step (iv): The substrate binds to the active site of the enzyme.
When a substrate molecule comes in contact with the enzyme, it binds to the specific active site of the enzyme. The active site is a region on the enzyme that is complementary in shape and chemical properties to the substrate. This binding is often referred to as the formation of the enzyme-substrate complex (ES complex).
2. Step (iii): Binding of the substrate induces the enzyme to alter its shape, fitting more tightly around the substrate.
Upon binding of the substrate to the active site, the enzyme undergoes a conformational change, or a change in shape. This conformational change allows the enzyme to hold the substrate in a favorable orientation, facilitating the subsequent chemical reaction. This induced-fit model suggests that the enzyme and substrate undergo dynamic interactions, leading to a more precise fit.
3. Step (ii): The active sites, now in close proximity to the substrate, break the bond of the substrate and form an enzyme-product (E-P) complex.
Once the substrate is bound and the enzyme has undergone a conformational change, the active site becomes catalytically active. The active site can now facilitate the conversion of the substrate into products by breaking and forming chemical bonds. This leads to the formation of an enzyme-product complex.
4. Step (i): The enzyme releases the products, and now the enzyme is free to bind another substrate.
After the reaction is complete, the products are released from the active site. The enzyme is then free to bind another substrate molecule and initiate another cycle of the catalytic process. This allows the enzyme to continue its function repeatedly.
Therefore, the correct sequence of the steps in the catalytic cycle of an enzyme action is (iv), (iii), (ii), (i).
The catalytic cycle of an enzyme action involves several steps that occur in a specific order. Let's break down each step and explain why option B is the correct sequence.
1. Step (iv): The substrate binds to the active site of the enzyme.
When a substrate molecule comes in contact with the enzyme, it binds to the specific active site of the enzyme. The active site is a region on the enzyme that is complementary in shape and chemical properties to the substrate. This binding is often referred to as the formation of the enzyme-substrate complex (ES complex).
2. Step (iii): Binding of the substrate induces the enzyme to alter its shape, fitting more tightly around the substrate.
Upon binding of the substrate to the active site, the enzyme undergoes a conformational change, or a change in shape. This conformational change allows the enzyme to hold the substrate in a favorable orientation, facilitating the subsequent chemical reaction. This induced-fit model suggests that the enzyme and substrate undergo dynamic interactions, leading to a more precise fit.
3. Step (ii): The active sites, now in close proximity to the substrate, break the bond of the substrate and form an enzyme-product (E-P) complex.
Once the substrate is bound and the enzyme has undergone a conformational change, the active site becomes catalytically active. The active site can now facilitate the conversion of the substrate into products by breaking and forming chemical bonds. This leads to the formation of an enzyme-product complex.
4. Step (i): The enzyme releases the products, and now the enzyme is free to bind another substrate.
After the reaction is complete, the products are released from the active site. The enzyme is then free to bind another substrate molecule and initiate another cycle of the catalytic process. This allows the enzyme to continue its function repeatedly.
Therefore, the correct sequence of the steps in the catalytic cycle of an enzyme action is (iv), (iii), (ii), (i).
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The steps in catalytic cycle of an enzyme action are given in random order.(i) The enzyme releases the products. Now enzyme is free to bind another substrate.(ii) The active sites, now in close proximity of substrate breaks the bond of substrate and forms E-P complex.(iii) Binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate.(iv) The substrate binds to the active site of enzyme (i.e., fitting into the active site).a)(i), (ii), (iii), (iv) b)(iv), (iii), (ii), (i)c)(i), (iii), (ii), (iv)d)(i), (ii), (iv), (iii)Correct answer is option 'B'. Can you explain this answer?
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The steps in catalytic cycle of an enzyme action are given in random order.(i) The enzyme releases the products. Now enzyme is free to bind another substrate.(ii) The active sites, now in close proximity of substrate breaks the bond of substrate and forms E-P complex.(iii) Binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate.(iv) The substrate binds to the active site of enzyme (i.e., fitting into the active site).a)(i), (ii), (iii), (iv) b)(iv), (iii), (ii), (i)c)(i), (iii), (ii), (iv)d)(i), (ii), (iv), (iii)Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The steps in catalytic cycle of an enzyme action are given in random order.(i) The enzyme releases the products. Now enzyme is free to bind another substrate.(ii) The active sites, now in close proximity of substrate breaks the bond of substrate and forms E-P complex.(iii) Binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate.(iv) The substrate binds to the active site of enzyme (i.e., fitting into the active site).a)(i), (ii), (iii), (iv) b)(iv), (iii), (ii), (i)c)(i), (iii), (ii), (iv)d)(i), (ii), (iv), (iii)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The steps in catalytic cycle of an enzyme action are given in random order.(i) The enzyme releases the products. Now enzyme is free to bind another substrate.(ii) The active sites, now in close proximity of substrate breaks the bond of substrate and forms E-P complex.(iii) Binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate.(iv) The substrate binds to the active site of enzyme (i.e., fitting into the active site).a)(i), (ii), (iii), (iv) b)(iv), (iii), (ii), (i)c)(i), (iii), (ii), (iv)d)(i), (ii), (iv), (iii)Correct answer is option 'B'. Can you explain this answer?.
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