any false answer(s), correct the we full credits O1CCE (A) To be effective, enzy
ID: 280696 • Letter: A
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any false answer(s), correct the we full credits O1CCE (A) To be effective, enzymes must be tiple answer questions. For Which of the following statement about enzymes are true? present at the same concentration as their substrates. B) Th ey increase the equilibrium constant for the reaction, thus favoring product formation. hey lower the activation energy for the conversion of substrate to product.nue They lower the activation energy for the conversion of product to substrate, (E) They ensure that the product is more thermodynamically sta lethan the substrate able than tihe substrate. 02Which of the following ab (A) Dehydrogenase is belonged to oxidoreductase. (B) out types of chemical reactions catalyzed by enzymes are true? Kinase is one type of ligase since it adds a phosphate group to its substrate. (C) Digase requires ATP molecule to work correctly. (D) Chymotrypsin is a protease. kinase (conversion of glucose to glucose-6-phospahte) has one substrateExplanation / Answer
Q1. You rightly figured out that statement C and E are TRUE about enzymes. Now we will correct the ones which are False.
Statement A. To be effective the concentration of enzyme should be higher than the substrate concentration so that each substrate molecule should get a chance to interact with the enzyme.
Statement B. Enzymes do not change the equilibrium constant of the reaction, it lower the activation energy of the reaction and thus favor the product formation Or Enzymes increase the rate of the reaction , thus favor product formation.
Statement D. Enzymes lower the activation energy for the conversion of substrate to product.
Q2. Statements A and E are TRUE and you got it Right. Statement D is also TRUE (see the explanation below). Following are the corrections in Statements B and C
Statement B. Kinase is a transferase since it transfers phosphate groups from high-energy, phosphate-donating molecules to specific substrates
Statement C. Ligase in eukaryotic, archaebacterial, viral and some eubacterial DNA require ATP to work correctly. Ligase in most eubacterial DNA is ATP-independent requires NAD
Staement D. Chymotrypsine is a protease. It uses an active serine residue to perform hydrolysis on the C-terminus of the aromatic amino acids of other proteins. This is TRUE
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