Which one of the following statements about Km is FALSE:Group of answer choicesThe specificity constant kcat/Km reflects both binding and catalytic event, therefore, it can be used to compare enzyme preferrences for different substrate.Km reflects the binding affinity between an enzyme and a substrate.The higher the Km, the more efficient ...

Question: 1. Define the components/terms of Michaelis-Menten kinetics and explain how each is used in enzyme kinetics. a. Steady state b. KM c. kcat d. Vmax e. kcat/KM 2. The initial rates of an enzyme-catalyzed reaction were determined at several different substrate concentrations: [S] (umol/L) V (umol/L) min-1) 22 39 20 50 100 65 102 120 135 200 Using these data,

O c. [E+] [S] /vo O d. kcat/Km QUESTION 2 For a given reaction with a AG <0, the reaction is O a. unfavorable in both directions. O b. favorable in both directions.

Question: Calculate kcat /KM for the enzyme reaction. Express your answer to two significant figures.Consider the enzyme-catalyzed reaction with Vmax=164 (μmol/L)min−1 and KM=32 rmal/L. If the total enzyme concentration was 8zmol/L. how many molecules of substrate can a molecule of enzyme process in each minute? Express your answer to three significant figures.

Question: The kcat /Km ratio of acetyl cholinesterase is 1.6×10∧8M∧−1 s∧−1, and the kcat/Km of fumarase is 1.6×10∧8M∧⋅1s∧⋅1. From this information which of the following can you conclude? These two enzymes require similar concentration of substrate to reach 1/V max. These two enzymes turnover numbers are very similar. These two enzymes are equally efficient enzymes.

From the following list, choose the enzyme having the greatest efficiency. You may assume that all of the enzymes were measured under initial velocity conditions. Enzyme Kcat / Km (5-M4) Acetylcholinesterase 1.6 x 10 Carbonic anhydrase 8.3 x 10 Catalase 4.0 x 10' Crotonase 2.8 x 10 Fumarase 1.6 x 10 Triose phosphate isomerase 2.4 x 10 B-Lactamase 1.0 x 10 Superoxide dismutase 7.0 x 10' Beta ...

The pH can have an effect on Kcat/Km. Kcat/Km is a ratio which indicates the catalytic efficiency of an enzyme. It is sensitive to pH because enzyme...

Identify which mathematical expression represents the formula for catalytic efficiency in terms of K c a t, K − 1, and K m.

Question: 56. An enzyme's specificity constant (kcat/Km) has a maximum upper limit due to: A) substrate concentration. B) enzyme concentration. C) the enzyme turnover

All of the following statements about the specificity constant of an enzyme are true except which one? It is equal to ratio kcat/Km for the substrate. It is specific to a certain substrate. It is equal to the number of times an enzyme can catalyze a reaction per second.