are vmax and km constant?
97300
The rate of reaction when the enzyme is saturated with substrate is the maximum rate of reaction, Vmax. ... This is usually expressed as the Km (Michaelis constant) of the enzyme, an inverse measure of affinity. For practical purposes, Km is the concentration of substrate which permits the enzyme to achieve half Vmax.
508923
Although enzymes are catalysts, Vmax does depend on the enzyme concentration, because it is just a rate, mol/sec - more enzyme will convert more substrate moles into product. In standard Michealis-Menten kinetics the reaction constant is proportional to the rate of the decomposition of ES (enzyme-substrate complexes).
214279
The constant value (often written k) relating amounts that rise or fall uniformly together. It is the ratio of the amounts y and x: k = y/x. Put another way: y = kx. Example: you are paid $20 an hour.
458252
['1 km = 1000 m.', '1 m = 100 cm.', '1 m = 1000 mm.', '1 cm = 10 mm.']
421781
['Lower bound: 7.94. Upper bound: 23.66.', 'Lower bound: 8.59. Upper bound: 20.63. ... ', 'Lower bound: 6.61. Upper bound: 31.36.']
530407
VFDs can produce constant torque from a motor by keeping the V/f constant (see Figure 8). When the output frequency is increased, the voltage increases linearly.
943656
Vmax is the maximum velocity of the enzyme. Competitive inhibitors can only bind to E and not to ES. They increase Km by interfering with the binding of the substrate, but they do not affect Vmax because the inhibitor does not change the catalysis in ES because it cannot bind to ES.
695550
The difference between Km and Kd The only difference between the Km and Kd expressions is the presence of kcat in Km's numerator. Thus, whether Km is equal to Kd depends only on the relative size of k-1 and kcat. They are equal when k-1 is much larger than kcat.
1408889
This acceleration only changes the vertical velocity, so the horizontal velocity is constant. People can't remember what is zero at the maximum height. Vertical velocity is zero at this point, but there is still horizontal velocity and acceleration is still down.
1009984
In the equation y = mx + b, if m is a nonzero constant and b = 0, then you have the function y = mx (often written y = kx), which is called a direct variation. That is, you can say that y varies directly as x or y is directly proportional to x.
1023210
Overall, e is good enough, the only significant difference on V is the extra two airbags. City is not like Jazz where the difference is massive.
198579
The number k is called the constant of proportionality. One important way of thinking about this constant k is that it tells us how much y increases by if we increase x by exactly 1. to express that y is directly proportional to x.
858380
The MET or metabolic equivalent described above is ideal. One MET equates to 3.5 ml · kg-1· min-1, therefore dividing the VO2max value by the MET value will convert VO2max into METs. Using the example the 1.5 mile run prediction of VO2max, the value can be converted into a Metmax value since they use the same units.
400638
The heat capacity at constant pressure CP is greater than the heat capacity at constant volume CV , because when heat is added at constant pressure, the substance expands and work. QV = CV △T = △U + W = △U because no work is done. Therefore, dU = CV dT and CV = dU dT .
1370716
If you add a constant to every value, the distance between values does not change. As a result, all of the measures of variability (range, interquartile range, standard deviation, and variance) remain the same.
128518
The constant value (often written k) relating amounts that rise or fall uniformly together. It is the ratio of the amounts y and x: k = y/x. Put another way: y = kx.
789531
1 Kilometer = 1000 Meters 1 km = 1000 m. The symbol is "km".