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Q.25 The helix content of a protein can be determined using (A) an infrared spectrometer (B) a fluorescence spectrometer (C) a circular dichroism spectrometer (D) a UV-Visible spectrophotometer Circular dichroism […]

Q.24 The molarity of water in a water : ethanol mixture (15 : 85, v/v) is approximately (A) 0.85 (B) 5.55 (C) 8.5 (D) 55.5   The molarity of water […]

Q.23 In transmission electron microscopy, electron opacity is greatly enhanced by treating the specimen with (A) ferrous ammonium sulfate (B) uranium acetate (C) sodium chloride (D) basic fuchsin Transmission electron […]

Q.22 While searching a database for similar sequences, E value does NOT depend on the (A) sequence length (B) number of sequences in the database (C) scoring system (D) probability […]

Q.21 Synteny refers to (A) gene duplication from a common ancestor (B) a tree representation of related sequences (C) the extent of similarity between two sequences (D) local conservation of […]

Q.20 An example of a program for constructing a phylogenetic tree is (A) phylip (B) phrap (C) prodom (D) PHDsec Phylogenetic trees reveal evolutionary relationships among organisms, essential for microbial […]

Q.19 An example of a derived protein structure database is (A) Pfam (B) SCOP (C) GEO (D) Prosite Derived protein structure databases process primary experimental data (PDB coordinates) into hierarchical […]

Q.18 Identify the statement that is NOT applicable to an enzyme catalyzed reaction. (A) Enzyme catalysis involves propinquity effects (B) The binding of substrate to the active site causes a […]

Q.17 The activity of an enzyme is expressed in International Units (IU). However, the S.I. unit for enzyme activity is Katal. One Katal is (A) 1.66 × 104 IU (B) […]

Q.16 Which one of the following is NOT a protoplast fusion inducing agent? (A) Inactivated Sendai virus (B) Ca2+ at alkaline pH (C) Polyethylene glycol (D) Colchicine Protoplast fusion merges […]