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Questions and Answers
What type of components are cofactors in enzymes?
What type of components are cofactors in enzymes?
- Carbohydrates
- Proteins
- Lipids
- Inorganic ions (correct)
What causes a conformational change in troponin C during muscle contraction?
What causes a conformational change in troponin C during muscle contraction?
- Release of sarcoplasmic reticulum
- Binding of troponin I
- Release of tropomyosin
- Binding of Ca2+ (correct)
What is required for the catalytic activity of enzymes?
What is required for the catalytic activity of enzymes?
- Proteolytic activation
- Native protein conformation (correct)
- Irreversible covalent modification
- Noncovalent binding to regulatory proteins
What do coenzymes act as in enzymatic reactions?
What do coenzymes act as in enzymatic reactions?
What did Eduard Buchner demonstrate in 1897 regarding enzymes?
What did Eduard Buchner demonstrate in 1897 regarding enzymes?
What do regulatory mechanisms of enzymes include?
What do regulatory mechanisms of enzymes include?
What is a prosthetic group in relation to enzymes?
What is a prosthetic group in relation to enzymes?
Which inorganic ion serves as a cofactor for cytochrome oxidase enzymes?
Which inorganic ion serves as a cofactor for cytochrome oxidase enzymes?
Why do enzymes exhibit a very high degree of specificity?
Why do enzymes exhibit a very high degree of specificity?
What is the main role of enzymes as biological catalysts?
What is the main role of enzymes as biological catalysts?
Where do enzyme-catalyzed reactions take place?
Where do enzyme-catalyzed reactions take place?
Why are enzymes often regulated through multiple methods?
Why are enzymes often regulated through multiple methods?
What part of an enzyme together with its bound coenzyme and/or metal ions forms a holoenzyme?
What part of an enzyme together with its bound coenzyme and/or metal ions forms a holoenzyme?
What is the function of troponin I in muscle contraction?
What is the function of troponin I in muscle contraction?
What is the range of molecular weight for enzymes?
What is the range of molecular weight for enzymes?
What occurs in the active sites of enzymes during catalysis?
What occurs in the active sites of enzymes during catalysis?
In metal ion catalysis, how do metals assist in reactions?
In metal ion catalysis, how do metals assist in reactions?
What must be true for catalysis to occur?
What must be true for catalysis to occur?
What do enzymes affect in a reaction?
What do enzymes affect in a reaction?
What do metal ions do in metal ion catalysis?
What do metal ions do in metal ion catalysis?
How are metal ions involved in metal ion catalysis?
How are metal ions involved in metal ion catalysis?
What concept explains the catalytic power of enzymes by binding tightly to specific states?
What concept explains the catalytic power of enzymes by binding tightly to specific states?
What percentage of known enzymes require metal ions for catalytic activity?
What percentage of known enzymes require metal ions for catalytic activity?
Which type of RNA can also catalyze reactions?
Which type of RNA can also catalyze reactions?
What does the term 'Transition state (‡)' represent in a reaction?
What does the term 'Transition state (‡)' represent in a reaction?
What is the difference between ∆G‡uncat and ∆G‡cat in a reaction?
What is the difference between ∆G‡uncat and ∆G‡cat in a reaction?
What is the starting point for either the forward or reverse enzymatic reaction?
What is the starting point for either the forward or reverse enzymatic reaction?
What do catalysts do to the activation energy and the reaction rate?
What do catalysts do to the activation energy and the reaction rate?
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