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Which of the following statements about enzymes are correct?
(i) Enzymes do not alter the overall change in free energy for a reaction.
(ii) Enzymes are proteins whose three dimensional shape is key to their functions.
(iii) Enzymes speed up reactions by lowering activation energy.
(iv) Enzymes are highly specific for reactions.
(v) The energy input needed to start a chemical reaction is called activation energy.
(i) Enzymes do not alter the overall change in free energy for a reaction.
(ii) Enzymes are proteins whose three dimensional shape is key to their functions.
(iii) Enzymes speed up reactions by lowering activation energy.
(iv) Enzymes are highly specific for reactions.
(v) The energy input needed to start a chemical reaction is called activation energy.
- a)(i) and (v)
- b)(ii) and (iv)
- c)(i), (ii) and (iv)
- d)All of these
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Which of the following statements about enzymes are correct?(i) Enzyme...
**Enzymes are biological catalysts that play a crucial role in speeding up chemical reactions in living organisms. Let's analyze each statement to determine which ones are correct:**
(i) Enzymes do not alter the overall change in free energy for a reaction.
- This statement is correct. Enzymes do not affect the overall change in free energy for a reaction. They only lower the activation energy required for the reaction to occur, but they do not change the energy difference between the reactants and products.
(ii) Enzymes are proteins whose three-dimensional shape is key to their functions.
- This statement is correct. Enzymes are proteins, and their three-dimensional shape is critical for their proper functioning. The active site of an enzyme, where the substrate binds and the reaction takes place, is precisely shaped to accommodate specific substrates.
(iii) Enzymes speed up reactions by lowering activation energy.
- This statement is correct. Enzymes work by lowering the activation energy required for a chemical reaction to occur. Activation energy is the energy input needed to start a reaction, and enzymes facilitate this process by providing an alternative pathway with a lower energy barrier.
(iv) Enzymes are highly specific for reactions.
- This statement is correct. Enzymes are highly specific for particular reactions. Each enzyme is designed to catalyze a specific chemical reaction or a group of closely related reactions. This specificity is determined by the enzyme's active site and its ability to recognize and bind to specific substrates.
(v) The energy input needed to start a chemical reaction is called activation energy.
- This statement is correct. Activation energy refers to the energy input needed to initiate a chemical reaction. It is the energy required to break the bonds of the reactant molecules and reach the transition state, from which the reaction proceeds to form the products.
**In conclusion, all of the given statements are correct. Enzymes do not alter the overall change in free energy, their three-dimensional shape is crucial for their function, they lower activation energy, they are highly specific for reactions, and activation energy is the energy input needed to start a chemical reaction. Therefore, the correct answer is option 'D'.
(i) Enzymes do not alter the overall change in free energy for a reaction.
- This statement is correct. Enzymes do not affect the overall change in free energy for a reaction. They only lower the activation energy required for the reaction to occur, but they do not change the energy difference between the reactants and products.
(ii) Enzymes are proteins whose three-dimensional shape is key to their functions.
- This statement is correct. Enzymes are proteins, and their three-dimensional shape is critical for their proper functioning. The active site of an enzyme, where the substrate binds and the reaction takes place, is precisely shaped to accommodate specific substrates.
(iii) Enzymes speed up reactions by lowering activation energy.
- This statement is correct. Enzymes work by lowering the activation energy required for a chemical reaction to occur. Activation energy is the energy input needed to start a reaction, and enzymes facilitate this process by providing an alternative pathway with a lower energy barrier.
(iv) Enzymes are highly specific for reactions.
- This statement is correct. Enzymes are highly specific for particular reactions. Each enzyme is designed to catalyze a specific chemical reaction or a group of closely related reactions. This specificity is determined by the enzyme's active site and its ability to recognize and bind to specific substrates.
(v) The energy input needed to start a chemical reaction is called activation energy.
- This statement is correct. Activation energy refers to the energy input needed to initiate a chemical reaction. It is the energy required to break the bonds of the reactant molecules and reach the transition state, from which the reaction proceeds to form the products.
**In conclusion, all of the given statements are correct. Enzymes do not alter the overall change in free energy, their three-dimensional shape is crucial for their function, they lower activation energy, they are highly specific for reactions, and activation energy is the energy input needed to start a chemical reaction. Therefore, the correct answer is option 'D'.
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Community Answer
Which of the following statements about enzymes are correct?(i) Enzyme...
They all are the properties of enzyme
Enzyme speed up the reaction without any change in the product. It is highly specified. We all know it is a protein and it's shape is 3 dimensional
Enzyme speed up the reaction without any change in the product. It is highly specified. We all know it is a protein and it's shape is 3 dimensional
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Which of the following statements about enzymes are correct?(i) Enzymes do not alter the overall change in free energy for a reaction.(ii) Enzymes are proteins whose three dimensional shape is key to their functions.(iii) Enzymes speed up reactions by lowering activation energy.(iv) Enzymes are highly specific for reactions.(v) The energy input needed to start a chemical reaction is called activation energy.a)(i) and (v)b)(ii) and (iv)c)(i), (ii) and (iv)d)All of theseCorrect answer is option 'D'. Can you explain this answer?
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Which of the following statements about enzymes are correct?(i) Enzymes do not alter the overall change in free energy for a reaction.(ii) Enzymes are proteins whose three dimensional shape is key to their functions.(iii) Enzymes speed up reactions by lowering activation energy.(iv) Enzymes are highly specific for reactions.(v) The energy input needed to start a chemical reaction is called activation energy.a)(i) and (v)b)(ii) and (iv)c)(i), (ii) and (iv)d)All of theseCorrect answer is option 'D'. 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 Which of the following statements about enzymes are correct?(i) Enzymes do not alter the overall change in free energy for a reaction.(ii) Enzymes are proteins whose three dimensional shape is key to their functions.(iii) Enzymes speed up reactions by lowering activation energy.(iv) Enzymes are highly specific for reactions.(v) The energy input needed to start a chemical reaction is called activation energy.a)(i) and (v)b)(ii) and (iv)c)(i), (ii) and (iv)d)All of theseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements about enzymes are correct?(i) Enzymes do not alter the overall change in free energy for a reaction.(ii) Enzymes are proteins whose three dimensional shape is key to their functions.(iii) Enzymes speed up reactions by lowering activation energy.(iv) Enzymes are highly specific for reactions.(v) The energy input needed to start a chemical reaction is called activation energy.a)(i) and (v)b)(ii) and (iv)c)(i), (ii) and (iv)d)All of theseCorrect answer is option 'D'. Can you explain this answer?.
Which of the following statements about enzymes are correct?(i) Enzymes do not alter the overall change in free energy for a reaction.(ii) Enzymes are proteins whose three dimensional shape is key to their functions.(iii) Enzymes speed up reactions by lowering activation energy.(iv) Enzymes are highly specific for reactions.(v) The energy input needed to start a chemical reaction is called activation energy.a)(i) and (v)b)(ii) and (iv)c)(i), (ii) and (iv)d)All of theseCorrect answer is option 'D'. 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 Which of the following statements about enzymes are correct?(i) Enzymes do not alter the overall change in free energy for a reaction.(ii) Enzymes are proteins whose three dimensional shape is key to their functions.(iii) Enzymes speed up reactions by lowering activation energy.(iv) Enzymes are highly specific for reactions.(v) The energy input needed to start a chemical reaction is called activation energy.a)(i) and (v)b)(ii) and (iv)c)(i), (ii) and (iv)d)All of theseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements about enzymes are correct?(i) Enzymes do not alter the overall change in free energy for a reaction.(ii) Enzymes are proteins whose three dimensional shape is key to their functions.(iii) Enzymes speed up reactions by lowering activation energy.(iv) Enzymes are highly specific for reactions.(v) The energy input needed to start a chemical reaction is called activation energy.a)(i) and (v)b)(ii) and (iv)c)(i), (ii) and (iv)d)All of theseCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Which of the following statements about enzymes are correct?(i) Enzymes do not alter the overall change in free energy for a reaction.(ii) Enzymes are proteins whose three dimensional shape is key to their functions.(iii) Enzymes speed up reactions by lowering activation energy.(iv) Enzymes are highly specific for reactions.(v) The energy input needed to start a chemical reaction is called activation energy.a)(i) and (v)b)(ii) and (iv)c)(i), (ii) and (iv)d)All of theseCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
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ample number of questions to practice Which of the following statements about enzymes are correct?(i) Enzymes do not alter the overall change in free energy for a reaction.(ii) Enzymes are proteins whose three dimensional shape is key to their functions.(iii) Enzymes speed up reactions by lowering activation energy.(iv) Enzymes are highly specific for reactions.(v) The energy input needed to start a chemical reaction is called activation energy.a)(i) and (v)b)(ii) and (iv)c)(i), (ii) and (iv)d)All of theseCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice NEET tests.
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