ABC26IN0898 · Consider the following statements for deoxy-hemerythrin and deoxy-hemocyanin: A. they are involved in O2 transport in biological systems B… · JUNE 2017
ABC26IN0902 · For the catalytic activity of Cu and Zn containing enzyme, superoxide dismutase. What is /are the correct statement (S)? (A) Cu and Zn both… · JUNE 2018
ABC26IN0906 · Match the items given below in the three columns: Correct matches: · DEC 2018
ABC26IN0907 · The metal transferred by bacteria and fungi using siderophores/siderochromes is · JUNE 2019
ABC26IN0049 · Choose the correct statements for oxymyoglobin and cytochrome P450 (resting state) from the following: A. Both contain dianion of… · 2019
ABC26IN0911 · Choose the correct statements for oxymyoglobin and cytochrome P450 (resting state) from the following: A. Both contain dianion of… · DEC 2019
ABC26IN0914 · Match Column I, II and III The correct match is · DEC 2019
Nitrogen Fixation
ABC26IN0854 · The reduction of nitrogen to ammonia, carried out by the enzyme nitrogenase, needs, · DEC 2011
ABC26IN0864 · The metal ions present in the active site of nitrogenase enzyme co-factor are · JUNE 2013
ABC26IN0875 · The number of histidine amino acid nitrogen atoms coordinated to bimetallic active site of oxyhemocyanin, and oxyhemerythrin, respectively… · DEC 2014
Oxygen Carriers Hemoglobin
ABC26IN0035 · The oxidation state of iron in met-hemoglobin is · 2012
ABC26IN0857 · The oxidation state of iron in met-hemoglobin is · JUNE 2012
ABC26IN0862 · Fe2+-porphyrins fail to exhibit reversible oxygen transport and cannot differentiate CO from O2. However, the hemoglobin is free from both… · DEC 2012
ABC26IN0873 · The cooperative binding of O2 in hemoglobin is due to · JUNE 2014
ABC26IN0877 · Under physiological condition, oxygen is binding to deoxyhemoglobin and deoxymyoglobin, the binding curve and its pH dependence… · DEC 2014
ABC26IN0880 · The Fe-Nporphyrin bond distances in the deoxy and oxy-hemoglobin, respectively, are · JUNE 2015
ABC26IN0041 · The resonance Raman stretching frequency ( o-o. in cm-1 ) of O2, is 1580. The o-o for O2 in bound oxy-hemoglobin is close to · 2015
ABC26IN0884 · The resonance Raman stretching frequency (-O in cm-1) of O2, is 1580. The -O for O2 in bound oxy-hemoglobin is close to · DEC 2015
ABC26IN0042 · Match the metalloprotein in Column-A with its biological function and metal centre in Column-B. The correct match is · 2015
ABC26IN0885 · Match the metalloprotein in Column-A with its biological function and metal centre in Column-B The correct match is · DEC 2015
ABC26IN0886 · In the absence of bound globin chain, heme group on exposure to O2 gives the iron-oxygen species · JUNE 2016
ABC26IN0895 · The resonance Raman stretching frequencies (in cm-1) of the bound O2 species in oxyhemerthyrin and oxy-hemoglobin, respectively, are · JUNE 2017
ABC26IN0899 · The correct statement for cytochrome c is · DEC 2017
ABC26IN0903 · Consider the following statements for the oxygenation of hemocyanine: (A) Oxidation state of both copper atoms changes by two (B) It… · JUNE 2018
Zinc Enzymes
ABC26IN0861 · Based on the behaviour of the metalloenzymes, consider the following statements arrayl (A) In the enzymes, the zinc activates O2, to form… · DEC 2012
ABC26IN0872 · Molybdoenzymes can both oxidize as well as reduce the substrates, because · JUNE 2014
ABC26IN0890 · In the catalytic hydration of CO2 by carbonic anhydrase, CO2 first interacts with · DEC 2016
ABC26IN0909 · Consider the following statements with respect to Cytochrome P-450 (A) It has histidine coordinated to iron centre (B) It is a membrane… · JUNE 2019