The sharp transition seen in Figure suggests that

A. Proteins can be denatured by any treatment that disrupts the weak bonds stabilizing tertiary structure, such as heating, or by chemical denaturants such as urea or guanidinium chloride.

B. A comparison of the degree of unfolding as the concentration of denaturant increases reveals a sharp transition from the folded, or native, form to the unfolded, or denatured form, suggesting that only these two conformational states are present to any significant extent.

C. A similar sharp transition is observed if denaturants are removed from unfolded proteins, allowing the proteins to fold.

D. Protein folding and unfolding is an “all or none” process that results from a cooperative transition .

#Question id: 27947

#Unit 1. Molecules and their Interaction Relevant to Biology

For each molecule of glucose degraded to pyruvate, two molecules of ATP are generated from ADP and Pi, and two molecules of NADH are produced by the reduction of NAD+. The hydrogen acceptor in this reaction is NAD+  this NAD+ bound to a

#Question id: 27948

#Unit 1. Molecules and their Interaction Relevant to Biology

#Question id: 27949

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following reaction is catalyzed by enzyme phosphohexose isomerase (phosphoglucose isomerase)

#Question id: 27950

#Unit 1. Molecules and their Interaction Relevant to Biology

Some of the properties of Hexokinases I, II, III & IV is given

a. Hexokinases I, II, and III shows hyperbolic curve of glucose binding while Hexokinase IV shows sigmoidal curve 

b. Accumulation of glucose 6-phosphate inhibits hexokinases I–III by feedback mechanism 

c. Accumulation of glucose 6-phosphate allosterically inhibits hexokinases I–III.

d. The allosteric effector of Hexokinase IV is fructose 6-phosphate.

Which of the following is incorrect  

#Question id: 27951

#Unit 1. Molecules and their Interaction Relevant to Biology

#Question id: 27952

#Unit 1. Molecules and their Interaction Relevant to Biology