Category: GATE Biotechnology Previous Year Papers with Solutions

Q.25 Which one of the following statements is true for actin?(A) Actin filament is structurally polarized and the two ends are not identical(B) De novo actin polymerization is a single–step […]

Q.24 Cell type A secretes molecule X into the culture medium. Cell type B in the same cultureresponds to the molecule X by expressing protein Y. Which one of the […]

Q.23 Which one of the following bioreactor configurations is the basis for a trickling biologicalfilter?(A) Stirred tank (B) Packed bed(C) Air lift (D) Fluidized bed Trickling Biological Filter Bioreactor Configuration […]

Q.22 Which of the following technique(s) can be used to study conformational changes inmyoglobin?P. Mass spectrometryQ. Fluorescence spectroscopyR. Circular dichroism spectroscopyS. Light microscopy(A) P only (B) P and S only […]

Q.21 Which one of the following is NOT a principal component of innate immunity?(A) Mucosal epithelia(B) Dendritic cells(C) Complement system(D) Memory B-cells Memory B-cells are not a principal component of […]

Q.20 Which one of the following metabolic processes in mammalian cells does NOT occur in themitochondria?(A) Citric acid cycle (B) Oxidative phosphorylation(C) Fatty acid β-oxidation (D) Glycolysis Glycolysis does not […]

Q.19 Which one of the following is INCORRECT about protein structures?(A) A protein fold is stabilized by favorable non-covalent interactions(B) All parts of a fold can be classified as helices, […]

Q.18 A mixture contains three similarly sized peptides P, Q and R. The peptide P is positivelycharged, Q is weakly negative and R is strongly negative. If this mixture is […]

Q.17 Which one of the following BLAST search programs is used to identify homologs of agenomic DNA query in a protein sequence database?(A) blastp (B) blastn (C) blastx (D) tblastn […]

Q.16 Which of the following components constitute a molecular mechanics force field?P. Bond stretchingQ. Bond angle bendingR. Torsional bond rotationS. Non-bonded interactions(A) P and Q only(B) P, Q and R […]