Ceruloplasmin is a blue-colored monomeric oxidase found in mamma- lian blood plasma. It contains multiple copper atoms per mole- cule. A ribbon representation of its three-dimensional shape is shown below: a) b) c) Identify any cofactor (s) which ceruloplasmin may possess. How do you know? Does ceruloplasmin act as an enzyme? Describe the secondary, tertiary and quaternary structures of ceruloplasmin.

Which of the following statements regarding the nitrogenous base guanine is FALSE? A) ALL of these statements are TRUE B) the enol form of guanine base-pairs with thymine C) guanine undergoes a tautomeric shift between a keto and an enol form D) the keto form of guanine base-pairs with cytosine E) an alcohol (-OH) group is present in guanine's enol form, but absent in the keto form F) guanine’s keto form is more stable than its enol form

there are A-D questions to this picture set up. A) What enzyme catalyzes this reaction? B) What is Delta G, please answer in Joules, K=19 C) If concentration of Glucose-1_Phosphate is 48.82 uM at equalibrium, what is the concentration of Glucose-6-phosphate in uM? D) If the reaction is NOT at equalibrium, what is delta G at 25C if the concentration of Glucose-1-phosphate is 15.04 uM and concentration of Glucose -6-phosphate is 1.62 mM? please answer in Joules and in significant figures. *note, 10^3uM in 1 mM   Thank you!!

Glucose-6- phosphatase catalyzes the following reaction: glucose – 6-phosphate + H2O = glucose + phosphate. Glucose-6- phosphatase would be classified as a(n)  a)  kinase   b) hydrolase   c)   lyase  d)   oxidoreductase If ∆G for a biochemical reaction has a positive value, this means: a)  the reaction will proceed very rapidly   b)   the reaction will proceed very slowly   c)  the reaction will generate heat   d)  The reaction requires energy input to proceed. Which thermodynamic parameter do enzymes change? A)  entropy  b)  activation energy   c)  enthalpy   d)  all of these Enzymes have which effect on the chemical equilibrium of a biochemical reaction? A)  the equilibrium shifts to favor products   b)  the equilibrium shifts to favor reactants  c) The equilibrium does not shift, but gets there faster   d)  a new equilibrium is formed

Cottage cheese and many other cheeses are produced by adding the enzyme rennin to milk, producing curds and whey. a) Design an experiment to determine the pH at which rennin is most effective. How will you measure the results? b) What are tests that can be used to detect protein, sugars, and fats? How can these tests to determine the chemical makeup of curds and whey?

a) At what pH will you try to bind lysozyme to a cation exchanger?   b) Is it possible to perform this binding even at a different pH than the one you mentioned in section a? Explain your answer.   c) Is it possible to bind lysozyme to an anion exchanger as well? If so, at what pH?

Hypoglycin A, an amino acid derivative found in unripened lychee, is an acutely toxic compound that produces seizures, coma, and sometimes death in undernourished children when ingested on an empty stomach. (a) Draw the neutral, positively charged, and negatively charged forms of hypoglycin A. (b) Which form predominates at pH = 1, 6, and 11? (c) What is the structure of hypoclycin A at its isoelectric point?

You are studying the tripep de Lys-Val-Thr.   a) Could you use the absorbance at 280 nm to determine the concentra on of this tripep de? Briefly explain your answer.   b) Show how the charge of this pep de would change at different pHs.

Provide the precise chemical description (anomer, isomer, and ring form) of the mono-saccharide subunits that are forming the tri-saccharide sugar molecule. Note the indicated numbering of the carbon atoms for the middle and the right subunit. Research the generic name of the tri-saccharide once you have identified the mono-saccharide subunits.  Left subunit: Middle subunit: Right subunit: Name of sugar: b) Provide the precise chemical description of the two bonds that connect the sugar subunits?

Consider a short peptide with the sequence M-C-Q-L-Y-P-E-D-K. List the ionizable groups in this peptide, and the net charge of the whole peptide at pH a) 1.5, b) 7.0, and c)12.0.