List of top Biochemistry Questions

Which one among the following structures is the most stable conformer of (Z)-pent-2-ene?
An enzyme-catalyzed conversion of a substrate at 298 K proceeds by a Michaelis-Menten mechanism. The Lineweaver-Burk plot for the analysis of the experimental data has an intercept along the y-axis of 0.357 mmol\(^{-1}\) dm\(^{3}\) s and a slope of 2.10 s. The correct Michaelis constant for the reaction is ______ (rounded off to 2 decimal places).
In Calvin-Benson cycle, to produce 1 molecule of glyceraldehyde 3-phosphate by fixing 3 molecules of carbon dioxide, 9 molecules of ATP and____ molecules (in integer) of NADPH are typically utilized.
Match the inhibitors in Group 1 with their respective targets in Group 2.
Group 1 Group 2
P) Oligomycin(i) Cytochrome bc1 complex 
(Q) Antimycin A (ii) Photosystem II
(R) 3-(3,4-dichlorophenyl)-1, 1- dimethylurea (DCMU)(iii)K\(^+\) ionophore
(S) Valinomycin(iv) Fo ATP synthase
The spectrum of a protein obtained using electrospray ionization mass spectrometry (ESI-MS) is shown below. Two peaks, one at m/z = 2960.6 and the other at m/z = 3552.5, are marked. The mass of the protein associated with the m/z = 2960.6 peak is____ Da. (Round off to two decimal places)
The spectrum of a protein obtained using electrospray ionization mass spectrometry (ESI-MS)
A 5250 base-pair long plasmid with 10 negative supercoils would have a linking number of______,considering 10.5 base pairs per turn for B DNA. (Answer in integer)
Which one or more of the following statements correctly describe(s) fluorescence spectroscopy?
Which one or more of the following statements correctly describe(s) the addition of N-nucleotides during the rearrangement of the immunoglobulin heavy chain- encoding gene?
Which one among the following structures is the most stable conformer of (Z)-pent-2-ene?
An enzyme-catalyzed conversion of a substrate at 298 K proceeds by a Michaelis-Menten mechanism. The Lineweaver-Burk plot for the analysis of the experimental data has an intercept along the y-axis of 0.357 mmol\(^{-1}\) dm\(^{3}\) s and a slope of 2.10 s. The correct Michaelis constant for the reaction is ______ (rounded off to 2 decimal places).
Cytokine released in response to virus infection is termed as
Which of the following is the least abundant immunoglobulin class in a normal adult?
Which is the most abundant protein in the entire biosphere?
Trihydroxypropane is commonly known as
Which antibody is involved in Type I hypersensitivity reaction?
Which of the following antibody is used by immune complexes for complement activation?
In a reaction, if P (product) is at a lower internal energy level than S (substrate), then the reaction is
The electron transport system is present in the
The theoretical RQ (respiratory quotient) for the complete oxidation of pyruvic acid will be
The cell mass of E. coli can be chemically represented as \(CH_{1.77}O_{0.49}N_{0.24}\). The degree of reduction for this biomass (based on available electrons) is
The equilibrium sedimentation experiments performed by Meselson and Stahl in 1957 demonstrated that
Match List I with List II and choose the correct answer.
Which of the following bioprocess would yield maximum number of ATP per gram of the substrate consumed?
The degree of inhibition for an enzyme catalyzed reaction by an inhibitor is independent of substrate concentration. This is expected in case of
Which one of the following amino acids contributes to the sulfur content in a protein?