Km calculation

Beginning with the Lineweaver-Burk equation, derive the Eadie-Hofstci equation. Explain how it may be used to plot a straight line from experi mental rate data. How are Vmax and KM calculated ... 

Figure 2. Local lapse rates (°C/km) calculated from MAT based on analysis of 18 areas in the western United States. From Meyer (1992). [Reprinted from Palaeogeography, Palaeoclimatology, Palaeoecology, v. 99, Meyer, H.W., Lapse rates and other variables applied to estimating paleoaltitudes from fossil floras, p. 71-99, 1992, Elsevier Science Publishers B.V., with permission from Elsevier.]... 

The escape velocity necessary for objects to leave the gravitational field of the Earth is 11.2 km Calculate the ratio of the escape velocity to the root-mean-square speed of helium, argon, and xenon atoms at 2000 K. Does your result help explain the low abundance of the light gas helium in the atmosphere Explain. 

Values of Km calculated from Cf agree within 10% of published data of... 

Bluegill and catfish were both able to hydrolyze DFP, dichlorvos, and dimethyl 2,2,2-trichloro-l-n-butyryloxyethyl phosphonate (butonate). Catfish enzymes were also able to hydrolyze paraoxon and methyl 3-hydroxy-alpha-cronate dimethyl phosphate (mevinphos) although at a very slow rate. Kms calculated for the enzymes of both species indicated that each had a greater affinity for DFP than dichorvos. Sulfhydryl reagents and Cu2+ were found to inhibit the enzymatic activity of both organisms. Paraoxon had no effect. Cleavage products were identified as dimethyl phosphate and 2,2-dichloroacetaldehyde from dichlorovos hydrolysis and diisopropyl phosphate from the hydrolysis of DFP. 

The mean thermal conductivity of the mineral fibre hull is Am3 = 0.055W/Km. Calculate the heat lost per length L of the tube Q/L and check whether the temperature of the mineral fibre hull is below the maximum permissible value of max = 250 °C. 

A barometer having a cross-sectional area of 1.00 cm at sea level measures a pressure of 76.0 cm of mercury. The pressure exerted by this column of mercury is equal to the pressure exerted by all the air on 1 cm of Earth s surface. Given that the density of mercury is 13.6 g/mL and the average radius of Earth is 6371 km, calculate the total mass of Earth s atmosphere in kilograms. Hint The surface area of a sphere is 4777 where r is the radius of the sphere.)... 

KM Calculate the number of moles of product resulting from a given number of moles of reactants or the number of moles of reactant needed to produce a certain number of moles of product. 

This graph gives a direct readout of Km. Calculation of V mx can be done from the KJ Vmax intercept. The Hanes plot avoids the problem of the Eadie-Hofstee plot of having velocity (dependent) data influencing the data on the horizontal (independent) axis. 

FIGURE 4.12 Diurnally averaged rates of production and loss of odd oxygen in the upper stratosphere (>30 km) calculated with a photochemical model for conditions of the ATMOS measurements at. 30° N, May I (Minschwaner et al.. 1993). Model calculations were constrained by measured profiles for O, H,0. and CH4. Photolysis of O, is the only source of odd oxygen. The total predicted removal rate of odd oxygen is given by the solid curve removal rates for specific catalytic cycles are also shown. 

The study area is 25,390 km calculated by girding simulated computation. The amoimt of different forms of nitrogen in surface sediments in the study area was calculated by the formula below (Table 5.15, Zheng et al., 2008) ... 

The enzyme is not only bound to the chain end, it is also bound to central parts of the polymer chain. The values of Vmax and Km calculated from the Michaelis-Menten equation are only apparent values. Km consists of the constants end groups and (i m)centerj and Vmax IS csscntially determined by... 

A star is estimated to have a mass of 2 X 10 kg. Assuming it to be a sphere of average radius 7.0 X 10 km, calculate the average density of the star in units of grams per cubic centimeter. 

A NASA satellite showed that in 2009 the ozone hole over Antarctica had a maximum surface area of 24.1 million km. The largest ozone hole on record occurred in 2006 and had a surface area of 29.6 million km. Calculate the difference in diameter (in meters) between the ozone hole in 2009 and in 2006. 

The specificity towards the trans 2-3 enoyl-CoAs has been determined using a 9 liM concentration of acyl-CoA. The incorporation of [2-14C] malonyl-CoA into VLCFA shows that the trans 2-3 Cl2 1 and trans 2-3 C16 1-CoA were poorly elongated compared to the trans 2-3 C20 1-CoA. The influence of NADH and NADPH on the elongation of trans 2-3 eicosanoyl-CoA has been also studied. In the range of concentration studied (0 to SOOpM), the elongase activity was always higher in the presence of NADPH than with NADH. The apparent Km calculated from... 

The effect is very small at a = 1000 km calculation gives At = 0.023 sec. In SRT the concept of simultaneity is meaningful for events in one and the same coordinate system only. 

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