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Previous Year Questions

TLS Online TPP Program

QUESTION ID:1

Mammalian cells in primary culture experience Heyflick limit after 50-60 cell generation time. However, in a rare situation or employing certain agents, cells can be induced to immortality. Which of the following genes/proteins have a major relationship with this?

QUESTION ID:2

SNARE proteins are found in the membranes of all of the following compartments EXCEPT

QUESTION ID:3

In the preparation of Golden rice, a few exogenous genes have been used in order to achieve the production of Vitamin A through recombinant DNA technology. This is a true example of

QUESTION ID:4

All of the following enzymes are linked to reduction of NADH except

QUESTION ID:5

Which of the following are components of a phospholipid?

QUESTION ID:6

Which one of the following is a signaling receptor?

QUESTION ID:7

Amino acid analysis of 1.0 mg of pure enzyme yielded 58.1 μg of leucine (MW = 131.2). What is the minimum MW of the enzyme based on leucine content?

QUESTION ID:8

The first metabolic intermediate that is common to the aerobic metabolism of glucose and fatty acids is

QUESTION ID:9

While sedimenting a microparticle by centrifugation, instead of increasing the rpm (to attain the desired “g” force), what else can be done to attain the complete sedimentation?

QUESTION ID:10

For passive vaccination, which antibody type will be most appropriate?

QUESTION ID:11

Which of the following is the best method to determine the phospholipid asymmetry in a plasma membrane?

QUESTION ID:12

Prosthetic groups such as iron-sulfur clusters and heme function to

QUESTION ID:13

APS (Ammonium persulphate) is used in SDS-PAGE for

QUESTION ID:14

Which of the following statements about the trp operon is not correct?

QUESTION ID:15

Glucose labeled with 14C at C-6 is added to a solution containing the enzymes and cofactors of the oxidative phase of the pentose phosphate pathway. The radioactive label will be observed at

QUESTION ID:16

The molarity of 15 % NaCl is

QUESTION ID:17

Which one of the following antibiotics is used to demonstrate the fresh protein synthesis in response to challenge by an inducer?

QUESTION ID:18

Identify the mismatch

QUESTION ID:19

Sciophytes are plants that prefer to grow in

QUESTION ID:20

Which one of the following is a micronutrient of plants?

QUESTION ID:21

pHELLSGATE 12 is a/an

QUESTION ID:22

In protein ‘A’ glutamic acid is replaced by glutamine to make protein ‘B’. Which technique can resolve these two proteins?

QUESTION ID:23

Genes related through descent from a common ancestral gene are called

QUESTION ID:24

The Bohr effect in hemoglobin refers to

QUESTION ID:25

In a biological system, amplification of signal is a fundamental regulatory principle. Which one of the following is NOT an amplification system?

QUESTION ID:26

The most pleiotropic colony-stimulating factor is

QUESTION ID:27

Which one of the following cells will migrate after injury in the central nervous system?

QUESTION ID:28

The pseudounipolar neurons are found in

QUESTION ID:29

The genetic map for three genes A, B and C is as follows: A-B = 10 map units, B-C = 5 map units and AC = 15 map units. In an individual of genotype AbC/aBc, the percentage of gametes expected to be of ABC is

QUESTION ID:30

Mendel’s law of segregation, as applied to the behavior of chromosomes during cell division means that

QUESTION ID:31

Which one of the following markers in brain is used for diagnosis of Rabies?

QUESTION ID:32

Which one of the following cell types is the most characteristic component of the early stages of acute inflammatory reaction?

QUESTION ID:33

Competitive inhibition of an enzyme by a competitive inhibitor can be overcome by simply

QUESTION ID:34

Other than increase in capital cost, increasing the number of steps in downstream processing of proteins enhances the final cost of the product because

QUESTION ID:35

Even though many therapeutic proteins require only 95% purity, the final product is often tested for microscopic amounts of specific contaminants. Such contaminants such as endotoxins in a pharmaceutical protein product is an example of

QUESTION ID:36

Vortexing in a stirred tank reactor can be prevented by using

QUESTION ID:37

In which of the following reactions, is the unit of rate constant and rate of reaction the same?

QUESTION ID:38

In an enzymatic reaction, if the enzyme concentration is increased from 1mg to 2 mg, which of the following statements is correct?

QUESTION ID:39

Which one of the following receptors perceives blue light in plants?

QUESTION ID:40

Paralytic shellfish poisoning (PSP) is caused by the consumption of molluscan shellfish contaminated with

QUESTION ID:41

The site of production of Gonad Inhibiting Hormone (GIH) in crustaceans is

QUESTION ID:42

The immunoglobulin isotype found both in cartilaginous and bony fishes is

QUESTION ID:43

In Bhopal disaster by which hazardous substance the toxicity effect get increased?

QUESTION ID:44

Which one of the following microorganisms can be effectively used as a biocontrol agent?

QUESTION ID:45

Which one of the following gases contributes most to the Greenhouse Effect?

QUESTION ID:46

Which one of the following best represents the central dogma of Bioinformatics?

QUESTION ID:47

Multiple sequence alignments are NOT used to derive

QUESTION ID:48

Which one of the following matrices can be used to identify distantly related homologs?

QUESTION ID:49

Among the different amino acid side chains in proteins, which of the following pairs might form side chain-side chain hydrogen bonding interaction with each other?

QUESTION ID:50

If a protein is known to bind Ca2+ ions, which of the following side chains is likely to be involved in Ca2+ binding?

QUESTION ID:51

Which one of the following suggests the multimeric nature of p53?

QUESTION ID:52

Which of the following is also called the “suicide enzyme”?

QUESTION ID:53

IgG in patients with rheumatoid arthritis has abnormal

QUESTION ID:54

Which one of the following pathogens does not use antigenic variation as a major means of evading host defences?

QUESTION ID:55

Warburg effect is characterised by

QUESTION ID:56

Amanita phalloides, which is responsible for the majority of fatal mushroom poisonings contains alpha-amanitin that specifically inhibits

QUESTION ID:57

Phenylmethylsulfonyl fluoride (PMSF) is a/an

QUESTION ID:58

Deficiency of HGPRT and Glucose-6-phosphatase leads to

QUESTION ID:59

Which is not an RNA virus?

QUESTION ID:60

Secondary metabolites are produced in which of the following stages?

QUESTION ID:61

Which one of the following amino acids has pKa value near physiological pH?

QUESTION ID:62

Somatic mutation of Immunoglobulin gene accounts for

QUESTION ID:63

Many microorganisms can’t use CO2 as their sole source of carbon as

QUESTION ID:64

There are three groups of photosynthetic bacteria: the cyanobacteria, green bacteria and

QUESTION ID:65

In human, the inherited autosomal recessive diseases Xeroderma pigmentosum is the result of a defect in the:

QUESTION ID:66

Which one of the following methods requires multiple sets of primers to detect more than one organism targeting multiple loci from the genomic DNA?

QUESTION ID:67

The advantage of the Edman's reagent (phenyl isothiocyanate-PTH) over Sanger's reagent (fluorodinotrobenzene-FDNB) in peptide analysis is

QUESTION ID:68

The transition state of a catalyzed reaction (EX‡) is a highly-populated intermediate on the reaction pathway which is

QUESTION ID:69

ETC has a potential to produce highly reactive free radicals that can damage the cells. Which one of the following is useful to prevent oxidative damage in cells?

QUESTION ID:70

Gangliosides derived from glucosylceramide contain one or more molecules of

QUESTION ID:71

dUMP is converted to TMP by

QUESTION ID:72

Esterification of cholesterol in plasma is catalyzed by

QUESTION ID:73

What makes stem cells different from other cell types?

QUESTION ID:74

Which is the correct hierarchy of gene activity in early Drosophila development?

QUESTION ID:75

The lineage of all adult somatic cells (cell lineage) has been documented in

QUESTION ID:76

The Noble Prize in Physiology or Medicine ‘for the discovery that mature cells can be reprogrammed to become pluripotent’ was awarded to

QUESTION ID:77

With reference to spontaneous mutations, one of the questions asked by geneticists was whether spontaneous mutations are induced in response to external stimuli or whether variants are present at a low frequency in most populations. In order to answer this, “fluctuation test” was carried out by

QUESTION ID:78

Which one of the following experimental designs is most suited to answer whether a newly discovered transposable element in yeast, transposes through an
mRNA intermediate?

QUESTION ID:79

With reference to lac operon which one of the following merodiploids will show a constitutive expression of β-galactosidase?

QUESTION ID:80

In what way are the homeotic genes of flowering plants similar to those of Drosophila?

QUESTION ID:81

Integrin signaling promotes cell migration by inducing changes in the

QUESTION ID:82

Photon capturing prosthetic group moiety of chlorophyll molecule is known as

QUESTION ID:83

Opsonization process is involved with

QUESTION ID:84

Poly-L-leucine solution in dioxane is

QUESTION ID:85

Which one of the following is best suited for hydrolyzing peptide bonds on the carboxyl side of aromatic residues?

QUESTION ID:86

Which one of the following molecules has the highest diffusion coefficient in plasma membrane?

QUESTION ID:87

Cystic Fibrosis Transmembrane Regulator (CFTR) Protein is a

QUESTION ID:88

Which one of the following modifications targets a protein for degradation?

QUESTION ID:89

Regulation of blood glucose level is by

QUESTION ID:90

Which of the proteins or polysaccharides to which fibronectins are capable of binding is a normal plasma membrane component?

QUESTION ID:91

The observation that plasma membrane proteins mix after cell fusion provides evidence for

QUESTION ID:92

The treatment of hepatocytes in in vitro culture with Ricin leads to

QUESTION ID:93

In a gel filtration chromatography

QUESTION ID:94

Two dimensional gel electrophoresis is a technique for separating proteins

QUESTION ID:95

Exact mass and sequence of proteins and peptides can be measured by

QUESTION ID:96

Fluorescence microscopy is based on the ability of certain molecules to

QUESTION ID:97

An IgG and an IgM samples (against human red blood cell surface antigen) were treated with β- mercaptoethanol independently and tried for agglutinating human red blood cells with a view to checking the hemagglutination titer of the two samples. Which one of the following results is correct in this context?

QUESTION ID:98

A lectin can bind to plasma membrane vesicles if it is

QUESTION ID:99

Membrane asymmetry can be regulated by

QUESTION ID:100

What is the activated reactant in the biosynthesis of phosphatidylinositol from inositol?

QUESTION ID:101

Best method in tracking the synthesis and maturation of a protein in a living cell is

QUESTION ID:102

Fluorescence recovery after photobleaching (FRAP) is a powerful technique for calculating

QUESTION ID:103

Treatment of the inside-out vesicles with an uncoupler like DNP that allows protons to freely move across the vesicle membrane would be expected to

QUESTION ID:104

The concept of “magic bullet” proposed long back for targeted anti-cancer drug delivery is not a reality till today because

QUESTION ID:105

One of the major reasons of the failure of somatic gene therapy protocol can be assigned to

QUESTION ID:106

SRP selectively recognizes ER signal sequences on newly synthesized proteins. This is an outcome of

QUESTION ID:107

In the active site of Transaldolase, which amino acid forms the Schiff base?

QUESTION ID:108

An enzyme has an activation energy of 10,700 cal/mole. How many times faster (approximately) will the reaction proceed at 37 oC compared to 15 oC?

QUESTION ID:109

Identify the small protein (167 amino acids) that is produced in adipocytes and acts on receptors in the hypothalamus to curtail appetite

QUESTION ID:110

A TLC run of rat liver phospholipids is sprayed with ninhydrin, and the colour is allowed to develop. Which phospholipids can be detected in this way?

QUESTION ID:111

N-ethylmaleimide (NEM) is known to selectively inhibit bacterial lactose transporters. Which amino acid of the transporter is responsible for this inhibition?

QUESTION ID:112

Highest turnover number of an enzymatic reaction so far known is exhibited by

QUESTION ID:113

The chemical nature of covalent linkage in a disaccharide is known as

QUESTION ID:114

Cancer cells have an unique property to exhibit uncontrolled division. This is primarily due to

QUESTION ID:115

To evaluate cytotoxic potential of any anti-cancer drug, which is the molecule of choice?

QUESTION ID:116

A monoclonal antibody binds to G-actin but NOT to Factin. What does this tell you about the epitope recognized by the antibody?

QUESTION ID:117

Glutathione is

QUESTION ID:118

Which one of the following amino acids is optically inactive?

QUESTION ID:119

Protein responsible for transport of O2 from alveoli to the tissue is

QUESTION ID:120

Process of formation of ATP from ADP during photosynthesis is referred to as

QUESTION ID:121

Glycogen and cellulose are

QUESTION ID:122

Topoisomerase I does not require ATP even though it does cleavage and ligation of DNA. This is because

QUESTION ID:123

A synthetic mRNA of repeating sequence 5'- CACACACACACACACAC... is used for a cell-free protein synthesizing system like the one used by Nirenberg. If we assume that protein synthesis can begin without the need for an initiator codon, what product or products would you expect to occur after protein synthesis?

QUESTION ID:124

You have obtained a sample of DNA, and you transcribe mRNA from this DNA and purify it. You then separate the two strands of the DNA and analyze the base composition (%) of each Aland and of the mRNA. You obtain the data shown in the table below. Which strand of the DNA is the coding strand, serving as a template for mRNA synthesis? 

 

  A

 G

C

T

U

DNA strand 1

 39.1

26.0

31.0

14.9

0

DNA strand 2

 14.2

30.8

25.7

38.3

0

mRNA

 39.0

25.9

30.8

0

14.6

QUESTION ID:125

Which one of the following tools of recombinant DNA technology is INCORRECTLY paired with its applications? 

QUESTION ID:126

Among the six types of plant cation channels identified, the shaker channels have been most thoroughly characterized. The shaker channels are highly selective to which one of the following cations?

QUESTION ID:127

The process of oxidation of plastohydroquinone (PQH2) molecule during light reaction of photosynthesis takes place in which of the following major protein complexes of the thylakoid membrane?

QUESTION ID:128

In a metabolic engineering experiment the flux from primary carbon metabolism was diverted towards methylerythritol phosphate (MEP) pathway. Which one of the following secondary metabolites will be maximally synthesized?

QUESTION ID:129

Which one of the following sequence of events is the first to take place during systemic production of protease inhibitors in young tomato leaves following insect feeding?

QUESTION ID:130

Which of the following is NOT a typical feature of hypersensitive response observed in plants during the attack of invading microbes?

QUESTION ID:131

Plants carrying a transgene for glyphosate resistance will survive a field application of glyphosate that kills weeds. Which of the following enzyme is inhibited by glyphosate?

QUESTION ID:132

A haploid sperm from one species and a haploid egg from another species may form a diploid interspecies hybrid. Meiosis in these plants generally fails but can
lead to rare duplicated gametes called

QUESTION ID:133

Genes essential for embryo organization have been identified by mutant analysis. Which one of the following mutants shows reduction or inhibition of cotyledons and shoot apical meristem?

QUESTION ID:134

Which one of the following is true for the polymertrapping model of sugar diffusion in plant cells?

QUESTION ID:135

The T-DNA of Agrobacterium must be excised from its circular plasmid for its transfer into plant cells. Which one of the following complexes of Vir proteins is responsible for DNA nick at the left and right border sequences?

QUESTION ID:136

What will happen to the growth of a vertically growing root if half of the root cap is removed?

QUESTION ID:137

GA2-oxidase cDNA from bean is overexpressed in wheat plant by genetic engineering. Which one of the following phenotypes correctly describes the resultant transgenic plant?

QUESTION ID:138

Which one of the following statements is NOT correct regarding ethylene signaling in plants?

QUESTION ID:139

Leaf abscission is a phenomenon regulated by the amount of auxin and ethylene. Which one of the following statements is correct regarding the amount of auxin and ethylene during leaf abscission?

QUESTION ID:140

Transgenic plants were developed with a gene conferring krummycin resistance. Four independent Te events were seeted and — 100 T1 seeds were genniutted on kmuunyein. The number of kanamyein sensitive (Flans) and kanamycin resistant (ElanR) progeny obtainer' in each case is listed below: 

Identify the line where the Transgenic has Integrated at a single locus. 

QUESTION ID:141

Using transgenic technology male sterile plants are developed by

QUESTION ID:142

One of the concerns in commercial usage of transgenic plants is the spread of transgene through pollen flow. Which one of the following methods can be used to circumvent this problem?

QUESTION ID:143

Which one of the following can be used as a selection marker for developing transgenic plants?

QUESTION ID:144

Ac transposon is a /an

QUESTION ID:145

SSR is said to be a --------------type of marker

QUESTION ID:146

Direct DNA uptake by protoplasts can be stimulated by

QUESTION ID:147

Aroma in rice is due to

QUESTION ID:148

The male sterile cytoplasm in pearl millet is

QUESTION ID:149

The pathogen against which the crop rotation can be adopted

QUESTION ID:150

Iodine test is used in the detection of

QUESTION ID:151

When urea-denatured inclusion bodies are renatured, protein aggregates can sometimes be found due to misfolding. For small proteins with no disulphide linkages and a single domain, the probability of misfolding is the highest when

QUESTION ID:152

The net charge of a protein may not be sufficient to determine whether a protein will bind to an ion exchanger. This is due to

QUESTION ID:153

In a large scale high cell density fed batch reactor, which one of the following statements is true?

QUESTION ID:154

Optimum bead loading for cell disruption in a bead mill is

QUESTION ID:155

In which one of the following membrane separation processes, concentration difference is the driving force?

QUESTION ID:156

Expanded bed chromatography runs on the principle of

QUESTION ID:157

Which one of the following statements pertaining to ultrafiltration is INCORRECT?

QUESTION ID:158

Which one of the following factors affects the morphology of fungal biomass the least?

QUESTION ID:159

In order to fractionate particles based on size; which of the following centrifuges is best suited?

QUESTION ID:160

Which one of the following purification steps always requires a high initial ionic strength in the sample?

QUESTION ID:161

In Sephadex G series (gel filtration) as the G number increases from 10, 15, 25….200, the pore size of the beads

QUESTION ID:162

In a large scale bioreactor with fungal fermentation, the dissolved oxygen concentration gradient is primarily due to the

QUESTION ID:163

When in a plug flow reactor with low levels of axial mixing, is the maximum product concentration obtained?

QUESTION ID:164

The reasons for existence of lag phase in a batch cultivation process in a bioreactor could be due to the following reasons. Identify the best combination from the following.P: low inoculum size Q:low preinoculum size R:stationary phase inoculum S:inoculum not having the same medium as in batch reactor

QUESTION ID:165

Increasing aeration at a particular rpm does not always lead to increase in oxygen mass transfer in a bioreactor. This is because

QUESTION ID:166

If in a fed batch cultivation of recombinant E. coli, feeding of the substrate is based on the following equation F(t)= [μVX(t)]/SF.YXS. Where μ is specific growth rate and is maintained constant, F(t) is feed rate, X(t) biomass cell concentration,YXS is biomass yield coefficient and SF is the substrate feed concentration. The feed pattern indicates that with increasing time, every cell is receiving the

QUESTION ID:167

Match the KLa determination method in Group I with the characteristics of the method in 1 Group II

P.

oxygen balance method

 1.  

aeration of an actively respiring culture is stopped and switched on again

Q

static gassing out technique

 2.

yields greater OTR and KLa than other methods

R.

dynamic gassing method

 3.

It can be done precisely only at steady state

S.

sodium sulphite oxidation method

 4.

Non respiring biological system is required

QUESTION ID:168

Under unaerated condition in a fermentor, the power consumed by a single impeller was 10,000 W. The diameter of the impeller D is 1m and the density of the medium is 1000 kg/m3 and the stirrer speed is 1s-1. If one more impeller is added to the fermentor, power consumption would be approximately

QUESTION ID:169

For mixing solid contents in a media mixing tank, inclined blade turbine is used because it

QUESTION ID:170

In microbial cultivation experiment with cells having significant maintenance requirements, the measured growth yield Y’ XS (G) and the true growth yield Y XS

QUESTION ID:171

The logistic equation for growth of a bacterial culture is given by 
Where X and Xo are biomass concentration, k and beta are constants. The model depicts that initially when x is small, the growth pattern of the culture would be 

QUESTION ID:172

In an anaerobic fermentor, broth is agitated intensely at 100rpm in a 3.0 m3 baffled tank using a Rushton turbine with diameter of 0.5m. If the diameter of the
impeller is decreased to 0.25m the mixing time in (seconds) would approximately increase ………fold

QUESTION ID:173

Culture comprising a B. subtlis strain by inoculating 1g of cells into 1 liter bioreactor. Fermentor containing 10g/l of glucose. The maximum specific growth rate of the culture is 1.0 /h. The biomass yield from glucose is 0.5 g/g. If the residual glucose concentration left out is 1g/l, the final cell concentration in g/l achieved would be around

QUESTION ID:174

Continuous stirred tank fermenter is characterized by (biomass concentration X kg/m3, residual substrate is S kg/m3, Sf=substrate concentration in feed kg/m3, Dilution rate = D and μm>>D and Km<Sf, XD= the biomass productivity kg/m3h. If the dilution rate is doubled to 2D then the new steady state values in comparison with earlier steady state is characterized by

QUESTION ID:175

Fourier'; law of heat conduction
 
This equation is very similar to 

QUESTION ID:176

A fluidized bed is formed when

QUESTION ID:177

Batch filtration often characterized by continuous increase of the inlet pressure of slurry, is called the ……………filtration

QUESTION ID:178

The most precise method of estimating the metabolic heat produced in an aerobic fermentation process is by

QUESTION ID:179

The ethanol yield per unit mass of substrate consumed (YP/S ) in an anaerobic fermentation process can be improved by

QUESTION ID:180

Exponentially growing cells increase 10 fold in 10 hours, the time required to increase 5 fold will be ………hours

QUESTION ID:181

There are five classes of immunoglobulins [Ig]: IgM, IgG, IgD, IgA and IgE. Upon stimulation of B cells through B cell receptor and a switch factor, which one of the following Ig classes does NOT switch?

QUESTION ID:182

For quantitation of an antigen, researchers A, B, C and D used the following set-up. Which one of the following set up is the most sensitive?

QUESTION ID:183

A mouse deficient in ROR-gammaT will be deficient in

QUESTION ID:184

The specificity in IFN-α/β induced response comes from

QUESTION ID:185

CD152-deficient mice have lymphoproliferative disorder. The disorder is characterized by

QUESTION ID:186

MHC class-II molecule can signal because it

QUESTION ID:187

The T cells in CD28-deficient mice do not proliferate in response to re-exposure to the same antigen. This is because

QUESTION ID:188

CD1 molecules are unique antigen-presenting molecules because they

QUESTION ID:189

Mutations in common gamma chain of receptors for IL-2 cytokine family cause

QUESTION ID:190

Which one of the following conditions generally favours tumour development?

QUESTION ID:191

Which one of the following is NOT a single gene disease?

QUESTION ID:192

Dental plaque is an example of the formation of

QUESTION ID:193

Rheumatic fever is a complication of

QUESTION ID:194

Undulant fever is a characteristic of

QUESTION ID:195

Bubonic plague is the infection of

QUESTION ID:196

Leptospirosis is transmitted by exposure to animal

QUESTION ID:197

Which one of the following is correct when Na ion concentration in the bathing fluid of a squid giant axon is less than that present in sea water, but the osmotic pressure is maintained by substituting it with choline chloride?

QUESTION ID:198

When Tetrodotoxin is administered in bathing medium of a nerve fibre during voltage clamp experiments the membrane current may show which one of the following changes?

QUESTION ID:199

The arrival of the action potential in a presynaptic knob initiates quantal release of neurotransmitter by influx of Ca ions, which may act by

QUESTION ID:200

Which one of the following changes will occur when the external K+ ion concentration in the neuromuscular junction of skeletal muscles is increased?

QUESTION ID:201

The black widow spider venom, alpha-latrotoxin produces its neurotoxicity by

QUESTION ID:202

The generalized seizure is due to the activity of

QUESTION ID:203

Which one of the following genes is related with the late-onset of Alzheimer’s disease?

QUESTION ID:204

The first genetic maps that were developed used genes as markers because

QUESTION ID:205

In E. coil four Hfr strains donate the following genetic markers, shown in the order donated 
All these HFr strains are derived from the same F4 strain. What is the order of these markers on the circular chromosome of the original Ff? 

QUESTION ID:206

Which of the following statements is true?

QUESTION ID:207

In which one of the following evolutionary processes, random changes in allele frequency can lead to a loss of genetic diversity?

QUESTION ID:208

In human pointed eyebrows are dominant to smooth eyebrows and widow’s peak (downward pointed frontal hairline) is dominant to continuous hairline. What phenotypic ratio would you expect in the offspring from a cross between an individual heterozygous for both genes and an individual homozygous recessive for both genes?

QUESTION ID:209

The character regulated by a holandric gene

QUESTION ID:210

Necrosis that develops in tissues subsequent to denaturation of structural and enzymatic proteins soon after death is appropriately referred to as

QUESTION ID:211

The demyelination of the central nervous system white matter produced by the canine distemper virus is an example of

QUESTION ID:212

Catarrhal exudate is observed in

QUESTION ID:213

Sudden onset of heavy mortality in chicken with cyanotic comb and wattles, closed eyes and a semicomatose state are characteristic features of

QUESTION ID:214

Most prominent initial symptom of Vitamin A deficiency in cows and horses is

QUESTION ID:215

Hydropericardium syndrome is otherwise known as

QUESTION ID:216

Scombroid Fish Poisoning is due to the high levels of free ----------- in fish tissue

QUESTION ID:217

The synthetic equivalent of neuropharmacologically active peptides obtained from the marine snail Conus magus is

QUESTION ID:218

Prophenol Oxidase-mediated immune system is found in

QUESTION ID:219

Bryostatin is a marine derived anticancer agent obtained from

QUESTION ID:220

Viral encephalopathy and retinopathy in fishes are caused by

QUESTION ID:221

Environmental gene tags are

QUESTION ID:222

Which one of the following is NOT true of biophotolysis?

QUESTION ID:223

Which is NOT a characteristic of a plasmid used for production of DNA vaccines in fish?

QUESTION ID:224

White spot syndrome virus has

QUESTION ID:225

Haemorrhagic septicemia in carp is caused by

QUESTION ID:226

Primary aetiology of Epizootic Ulcerative Syndrome is

QUESTION ID:227

Net Primary production (NPP) =

QUESTION ID:228

The lower, dense region of the atmosphere is known asA

QUESTION ID:229

The two most important climatic factors affecting the distribution of world biomes are

QUESTION ID:230

A high BOD value in aquatic environment is indicative of

QUESTION ID:231

Benthic organisms of lakes or sea are usually

QUESTION ID:232

Which of these biomes would you expect to find a coyote living in?

QUESTION ID:233

The Ozone layer saves from lethal UV. It mainly absorbs

QUESTION ID:234

The maximum biodiversity in India occurs at

QUESTION ID:235

Extinction rate is high at

QUESTION ID:236

Bootstrapping technique in molecular phylogeny analysis is used to derive additional datasets by

QUESTION ID:237

Which of the following statements regarding scoring matrices of proteins is incorrect?

QUESTION ID:238

Trade off between sensitivity and specificity can be represented by

QUESTION ID:239

Which of the following interactions are NOT characteristics of epitope-paratope interactions?

QUESTION ID:240

While building a model of a protein using homology modeling approach, special care needs to be exercised while assigning conformation of

QUESTION ID:241

Which of the following complementarity determining regions (CDRs) of antibodies is sequentially and conformationally the most variable?

QUESTION ID:242

The LIS technique is used in the MUMmer algorithm for

QUESTION ID:243

The numbers at the internal nodes of a phylogenetic tree indicate

QUESTION ID:244

Which one of the following statements is FALSE?

QUESTION ID:245

Structure determination of myoglobin in 1958 revealed that the protein consists mostly of

QUESTION ID:246

One side of a 30-residue α-helix faces the hydrophobic interior of a protein. If the helical wheel of this helix were to be drawn, which of the following residues are likely to be hydrophobic?

QUESTION ID:247

The dielectric constant of protein interiors is likely to be

QUESTION ID:248

In a helix-turn-helix motif in proteins, which one of tyhe following is true for binding to nucleic acids?

QUESTION ID:249

In the prokaryotic ribosome structure, the peptidyl transferase activity of the ribosomes is found

QUESTION ID:250

Maximum parsimony analysis in the context of molecular phylogeny implies