Biochemistry

Please answer them ASAP

42. on of glucose to glucose-6-phosphate occurs as follows Glucose + ATP → Glucose-6-phosphate + ADP Δ。”–16.7 k/mol The enzyme hexokinase is needed to catalyze this reaction A. To make it proceed to the right. B. To increase the equilibrium constant. C. To lower the free energy of activation. D. To increase the amount of Glucose-6-phosphate at equilibrium. E. So that less ATP is necessary. 43. Experiments on denaturation and renaturation after the reduction and reoxidation of the – s-S-bonds in the enzyme ribonuclease (RNase) have shown that A. folding of denatured RNase into the native, active conformation, requires the input of energy in the form of heat. B. C the completely unfolded enzyme, with all- S-s-bonds broken, is still enzymatically D. the enzyme, dissolved in water, is thermodynamically stable relative to the mixture of E. the primary sequence of RNase is sufficient to determine its specific secondary and tertiary native ribonuclease does not have a unique secondary and tertiary structure. active. amino acids whose residues are contained in RNase. structure 44. The change in the pKa that is responsible for the Bohr effect is due to the fact that A. BPG has a higher affinity for deoxyhemoglobin than for oxyhemoglobin. B. carbon dioxide binds to hemoglobin. C. carbon monoxide binds to hemoglobin. D. binding of oxygen to hemoglobin results in conformational changes that affect the environment of certain amino acids that have protonatable side chains. E. binding of oxygen by hemoglobin is favored for HbF compared to HbS 45. What functional groups are present on this molecule? CH2-CH2-C-H OH A. ether and aldehyde B. hydroxyl and aldehyde C. hydroxyl and carboxylic acid D. hydroxyl and ester E. hydroxyl and ketone