Enzyme-catalysed reaction: activation energy - Here is the problem I have to solve:
If 10 μg of pure carbonic anhydrase catalyzes the hydration of 0.30 g of carbon dioxide in 1 min at 37˚C under optimal conditions, what is the turnover number (kcat) of carbonic anhydrase (in units of min-1)?
I have already calculated the turnover number, which is 2.0 x 107 min-1, but I'm kind of lo...
Calculate the number of glucose molecules within a single cell & calculate the molar concentration of hexokinase. - Mycoplasmas are the smallest living cells. They are spherical and have a diameter of about 0.33 μm (radius of mycoplasmas = 0.165 μm)a.
(a)Glucose is the major energy source of mycoplasma cells. Its concentration within such cells is 0.1 mM. Calculate the number of gluc...
Calculate the minimum number of amino acids necessary for one segment of α-helix to traverse the membrane completely. for Bacteriorhodopsin MW 26,000 - 5. Under some environmental conditions the halophile Halobacterium halobium
synthesizes a membrane protein (MW 26,000) bacteriorhodopsin, which is purple because it contains retinal. Molecules of this protein aggregate into purple
patch...
Given their approximate diameters, calculate the approximate number of hapatocytes (diameter 20 ìm), bacteria (diameter 1 ìm), virus (diameter 10 nm) - I would like to double check my answer. I think it's right but I want to be sure. Thank you.
Question:
Given their approximate diameters, calculate the approximate number of
a. hepatocytes (diameter 20 ìm) radius=10ìm,
b. bacteria (di...
Calculate the minimum molecular weight of the enzyme - Many enzymes are inhibited irreversibly by heavy metal ions which react with essential sulfhydryl groups to form mercaptides. The affinity of silver ions (Ag+) for sulfhydryl groups is so great that it can be used to titrate –SH groups quantitatively. To a 10 ml of solution containing 10mg/ml pure enzyme was added just enough AgNO3 to comple...