Question 3 Substrates are usually bond to the active site of an enzyme by competitive inhibition. pH changes. the side chains of amino acids in the enzyme protein. peptide bonds. ester bonds. 1 pts
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Step 1: The active site of an enzyme is the region that binds to the substrate. Show more…
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Enzymes are types of proteins that do two important things to chemical reactions. What are they? a. ______________ b. __________ 2. Active sites are domains/regions on the: A. product B. substrate C. enzyme D. co-factor 3. What is NOT affected/changed during an enzymatic reaction? A. substrate B. enzyme 4. When the substrate is bound to the enzyme, the shape of the enzyme may change slightly, leading to A. an induced fit B. a great range of possible catalytic activities C. a greater supply of activation energy D. more permanent binding through intimate total contact E. more possible products of the reaction 5. What type of chemical bond does NOT form between an enzyme and its substrate in a transient (aka temporary) reaction? A. ionic B. covalent C. H bonds D. hydrophobic 6. Vitamins often are necessary for enzyme activity. What role do these molecules play? A. They compete for the active sites in enzymes to help the enzyme to function. B. They bind to the enzyme and allow for the active site to become active. C. They bind to the substrate and enable it to bind to the enzyme's active site. 7. Certain drugs and poisons irreversibly bind to their corresponding enzyme. What types of chemical interactions are formed between an enzyme and an irreversible inhibitor? A. ionic B. covalent C. hydrogen bonds D. hydrophobic
Croup C.
1. In what way does an uncompetitive inhibitor bind to an enzyme? A. It reversibly binds to the enzyme active site. B. It irreversibly binds to the enzyme active site. C. It reversibly binds to the enzyme-substrate complex but does not bind to the free enzyme. D. It reversibly binds to both the free enzyme and the enzyme substrate complex. E. It irreversibly binds to an enzyme allosteric site. 2. What would be the systematic name for an enzyme that catalyzes the following reaction? Alanine + 2-oxoglutarate -> pyruvate + glutamate A. Alanine: 2-oxoglutarate hydrolyase. B. Alanine: 2-oxoglutarate ligase. C. Alanine: 2-oxoglutarate aminotransferase. D. Glutamate oxidoreductase. E. Pyruvate: glutamate phosphotransferase. 3. Which protein polymerizes into a gel-like matrix after it is activated to assist in blood clotting? A. Trypsinogen. B. Fibrinogen. C. Prothrombin. D. Thrombin. E. Warfarin.
Md.Daniyal A.
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