Recent questions tagged gate2012

Which one of the following DNA sequences carries an invert repeat?ATGAGCCCCGAGTATACTCGGGGCTCATATGAGCCGGCTCTATACTCGGCCGAGATATGAGCCGAGCCTAACTCGGCTCGGATATGAGCCTATGGTATACTCGG...

The helix content of a protein can be determined usingan infrared spectrometera fluorescence spectrometera circular dichroism spectrometera UV-Visible spectrophotometer

In transmission electron microscopy, electron opacity is greatly enhanced by treating the specimen withferrous ammonium sulfateuranium acetatesodium chloridebasic fuchsin

While searching a database for similar sequences, E value does NOT depend on thesequence lengthnumber of sequences in the databasescoring systemprobability from a normal ...

Synteny refers togene duplication from a common ancestora tree representation of related sequencesthe extent of similarity between two sequenceslocal conservation of gene...

The activity of an enzyme is expressed in International Units (IU). However, the S.I unit for enzyme activity is Katal. One Katal is$1.66 \times {10^4}$ IU$60$ IU$6 \time...

An example of a program for constructing a phylogenetic tree isphylipphrapprodomPHDsec

An example of a derived protein structure database isPfamSCOPGEOProsite

Identify the statement that is NOT applicable to an enzyme catalyzed reaction.Enzyme catalysis involves propinquity effectsThe binding of substrate to the active site cau...

Which one of the following is NOT a protoplast fusion inducing agent?Inactivated Sendai virus$Ca^{2+}$ at alkaline pHPolyethylene glycolColchicine

During photorespiration under low $CO_2$ and high $O_2$ levels, $O_2$ reacts with ribulose1,5- bisphosphate to yieldone molecule each of 3-phosphoglycerate and 2-phosphog...

The direction of shell coiling in the snail $\text{Limnaea peregra}$ is a classic example ofchromosomal inheritanceextra-chromosomal inheritancechromosomal translocationh...

Protein-DNA interactions $\text{in vivo}$ can be studied bygel shift assaySouthern hybridizationchromatin immunoprecipitation assayfluorescence $\text{in situ}$ hybridiza...

A truncated polypeptide is synthesized due to a nonsense mutation. Where would you introduce another mutation to obtain a full-length polypeptide?Ribosomal protein geneTr...

A protein is phosphorylated at a serine residue. A phosphomimic mutant of the protein can be generated by substituting that serine withglycinealanineaspartatethreonine

Choose the correct signal transduction pathway.Hormone $\to$ 7 TM receptor $\to$ G protein $\to$ cAMP $\to$ PKAHormone $\to$ G protein $\to$ 7 TM receptor $\to$ cAMP $\t...

Heat inactivation of serum is done to inactivateprionsmycoplasmacomplementpathogenic bacteria

Nude mice refers tomice without skinmice without thymusknockout micetransgenic mice

Dimethyl sulfoxide (DMSO) is used as a cryopreservant for mammalian cell cultures becauseit is an organic solventit easily penetrates cellsit protects cells by preventing...

A humanized antibody is one in which theheavy and light chains are from humanheavy chain is from human and light chain is from mouselight chain is from human and heavy ch...

B-lymphocytes originate from the bone marrow whereas T-lymphocytes originate fromthymusbone marrowspleenliver

Identification of blood groups involvesprecipitationneutralizationopsonizationagglutination

Idiotypic determinants of an antibody are associated with theconstant region of the heavy chainsconstant region of the light chainsvariable regionconstant regions of ligh...

The basis for blue-white screening with $pUC$ vectors isintraallelic complementationintergenic complementationintragenic suppressionextragenic suppression

In mismatch correction repair, the parental DNA strand is distinguished from the daughter strand byacetylationphosphorylationmethylationglycosylation