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Previous GATE
Featured
Questions without answers in General Biology
0
votes
0
answers
1
GATE2014-7
If the dissociation constant for solute-adsorbent binding is $K_D$, the retention time of the solute in a chromatography column increases with increasing $K_D$ decreases with increasing $K_D$ passes through minimum with increasing $K_D$ is independent of $K_D$
If the dissociation constant for solute-adsorbent binding is $K_D$, the retention time of the solute in a chromatography columnincreases with increasing $K_D$decreases wi...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Biochemistry
gate2014
+
–
0
votes
0
answers
2
GATE2014-9
The most plausible explanation for a sudden increase of the respiratory quotient $(RQ)$ of a microbial culture is that cells are dying yield of biomass is increasing the fermentation rate is increasing relative to respiration rate the maintenance rate is decreasing
The most plausible explanation for a sudden increase of the respiratory quotient $(RQ)$ of a microbial culture is thatcells are dyingyield of biomass is increasingthe fer...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Microbiology
gate2014
microbial-growth
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–
0
votes
0
answers
3
GATE2014-13
Gram-positive bacteria are generally resistant to complement-mediated lysis because thick peptidoglycan layer prevents insertion of membrane attack complex into the irmer membrane Gram-positive bacteria import the membrane attack complex and inactivate it ... degraded by the proteases produced by the Gram-positive bacteria Gram-positive bacteria cannot activate the complement pathway
Gram-positive bacteria are generally resistant to complement-mediated lysis becausethick peptidoglycan layer prevents insertion of membrane attack complex into the irmer ...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Microbiology
gate2014
bacterial
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–
0
votes
0
answers
4
GATE2014-15
Which of the following essential element(s) is/are required as major supplement to enhance the bioremediation of oil spills by the resident bacteria? Sulfur Nitrogen and phosphorus Iron Carbon
Which of the following essential element(s) is/are required as major supplement to enhance the bioremediation of oil spills by the resident bacteria?SulfurNitrogen and ph...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Microbiology
gate2014
bacterial
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–
0
votes
0
answers
5
GATE2014-17
The product(s) resulting from the hydrolysis of maltose is/are a mixture of $\alpha$-D-Glucose and $\beta$-D-Glucose a mixture of D-Glucose and L-Glucose $\alpha$-D-Glucose only $\beta$-D-Glucose only
The product(s) resulting from the hydrolysis of maltose is/area mixture of $\alpha$-D-Glucose and $\beta$-D-Glucosea mixture of D-Glucose and L-Glucose$\alpha$-D-Glucose ...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Biochemistry
gate2014
glucose
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–
0
votes
0
answers
6
GATE2014-18
Amino acid residue which is most likely to be found in the interior of water-soluble globular proteins is Threonine Aspartic acid Valine Histidine
Amino acid residue which is most likely to be found in the interior of water-soluble globular proteins isThreonineAspartic acidValineHistidine
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Biochemistry
gate2014
aminoacids
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–
0
votes
0
answers
7
GATE2014-20
Prior exposure of plants to pathogens is known to increase resistance to future pathogen attacks.This phenomenon is known as systemic acquired resistance hypersensitive response innate immunity antibody mediated response
Prior exposure of plants to pathogens is known to increase resistance to future pathogen attacks.This phenomenon is known assystemic acquired resistancehypersensitive res...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Immunology
gate2014
history-of-immunology
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–
0
votes
0
answers
8
GATE2014-21
Reactions between antibodies and antigens that are detected by precipitate formation in an agar gel are referred as immunoprecipitation assay immunodiffusion assay immunoaggregation assay immunofixation assay
Reactions between antibodies and antigens that are detected by precipitate formation in an agar gel are referred asimmunoprecipitation assayimmunodiffusion assayimmunoagg...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Immunology
gate2014
antigen-antibody-reactions
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–
0
votes
0
answers
9
GATE2014-24
The reactions leading to the formation of amino acids from the TCA cycle intermediates are carboxylation isomerization transamination decarboxylation
The reactions leading to the formation of amino acids from the TCA cycle intermediates arecarboxylationisomerizationtransaminationdecarboxylation
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Biochemistry
gate2014
aminoacids
+
–
0
votes
0
answers
10
GATE2013-51
Which one of the receptors has the highest affinity for the ligand? $R1$ $R2$ $R3$ $R4$
Which one of the receptors has the highest affinity for the ligand?$R1$$R2$$R3$$R4$
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Immunology
gate2013
antigen
antibody-and-structure
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–
0
votes
0
answers
11
GATE2013-50
Common Data for Questions 50 and 51:The binding eciency of three diamt receptorsRL R2 and R3 were tested against a ligand usirequilibrium dialysis, uith a constant concentration of receptor and varying concentrations of ligand- TlScatchard plot of receptor titration with diermt concentration ... sites present on receptors R1 and R3, respectively are 1 and 4 l and l 4 and 1 2 and 2
Common Data for Questions 50 and 51:The binding eciency of three diamt receptorsRL R2 and R3 were tested against a ligand usirequilibrium dialysis, uith a constant concen...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Immunology
gate2013
antigen
antibody-structure-and-function
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–
0
votes
0
answers
12
GATE2013-43
The total number of fragments generated by the complete and sequential cleavage of the polypeptide given below by Trypsin followed by $CNBr$ is __________. $Phe-Trp-Met-Gly-Ala-Lys-Leu-Pro-Met-Asp-Gly-Arg-Cys-Ala-Gln$
The total number of fragments generated by the complete and sequential cleavage of the polypeptide given below by Trypsin followed by $CNBr$ is __________.$Phe-Trp-Met-Gl...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Biochemistry
gate2013
aminoacids
numerical-answers
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–
0
votes
0
answers
13
GATE2013-35
Match the entries in $\text{Group I}$ with the entries in $\text{Group II}$ ... $\text{P-4, Q-3, R-2, S-1}$ $\text{P-3, Q-2, R-1, S-4}$ $\text{P-2, Q-4, R-1, S-3}$
Match the entries in $\text{Group I}$ with the entries in $\text{Group II}$.$\begin{array}{|l|l|l|l|} \hline & \text{Group I} && \text{Group II} \\ \hline P. & \text{RNA...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Molecular Biology and Genetics:
gate2013
dna-rna
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–
0
votes
0
answers
14
GATE2013-37
Match the entries in the $\text{Group I}$ with the entries in $\text{Group II}$ ... $\text{P-2, Q-1, R-3, S-4}$ $\text{P-3, Q-4, R-2, S-1}$ $\text{P-1, Q-4, R-3, S-2}$
Match the entries in the $\text{Group I}$ with the entries in $\text{Group II}$.$\begin{array}{|l|l|l|l|} \hline & \text{Group I} && \text{Group II} \\ \hline P. & \text{...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Molecular Biology and Genetics:
gate2013
chromosome
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–
0
votes
0
answers
15
GATE2013-33
Match the herbicides in $\text{Group I}$ with the target enzymes in $\text{Group II}$ ... $\text{P-4, Q-3, R-2, S-1}$ $\text{P-3, Q-2, R-4, S-1}$
Match the herbicides in $\text{Group I}$ with the target enzymes in $\text{Group II}$ $\begin{array}{|l|l|l|l|} \hline & \text{Group I} && \text{Group II} \\ \hline P. & ...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Biochemistry
gate2013
enzyme
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–
0
votes
0
answers
16
GATE2013-32
Match the entries in $\text{Group I}$ with the enzymes in $\text{Group II}$ ... $\text{P-4, Q-1, R-3, S-2}$ $\text{P-3, Q-1, R-4, S-2}$ $\text{P-3, Q-4, R-2, S-1}$
Match the entries in $\text{Group I}$ with the enzymes in $\text{Group II}$.$\begin{array}{|l|l|l|l|} \hline & \text{Group I} && \text{Group II} \\ \hline P. & \text{NAD}...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Biochemistry
gate2013
engyme
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–
0
votes
0
answers
17
GATE2013-31
In nature, $\text{Agrobacterium tumefaciens}$ mediated infection of plant cells leads to P. crown gall disease in plants Q. hairy root disease in plants R. transfer of $\text{T-DNA}$ into the plant chromosome S. transfer of Ri-plasmid into the plant cell S only P and R only Q and S only Q only
In nature, $\text{Agrobacterium tumefaciens}$ mediated infection of plant cells leads toP. crown gall disease in plantsQ. hairy root disease in plantsR. transfer of $\tex...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Molecular Biology and Genetics:
gate2013
microbial-genetics
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–
0
votes
0
answers
18
GATE2013-30
Match the antibiotics in $\text{Group I}$ wiith the targets in $\text{Group II}$ ... $\text{P-4, Q-1, R-2, S-3}$ $\text{P-3, Q-4, R-2, S-1}$
Match the antibiotics in $\text{Group I}$ wiith the targets in $\text{Group II}$.$\begin{array}{|l|l|l|l|} \hline & \text{Group I} & & \text{Group II} \\ \hline P. & \t...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Molecular Biology and Genetics:
gate2013
+
–
0
votes
0
answers
19
GATE2013-29
Match the cell structures in $\text{Group I}$ with the organisms in $\text{Group II}$ ... $\text{P-3, Q-4, R-1, S-2}$ $\text{P-4, Q-1, R-3, S-2}$
Match the cell structures in $\text{Group I}$ with the organisms in $\text{Group II}$.$\begin{array}{|l|l|l|l|} \hline & \text{Group I} && \text{Group II} \\ \hline P. & ...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Microbiology
gate2013
organisms
+
–
0
votes
0
answers
20
GATE2013-27
Match the entries in the $\text{Group I}$ with the elution conditions in $\text{Group II}$ ... $\text{P-3, Q-4, R-1, S-2}$ $\text{P-3, Q-4, R-2, S-1}$
Match the entries in the $\text{Group I}$ with the elution conditions in $\text{Group II}$.$\begin{array}{|l|l|l|l|} \hline & \text{Group I} && \text{Group II} \\ \hline...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Analytical Techniques
gate2013
principles-of-chromatography
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–
0
votes
0
answers
21
GATE2013-26
Match the commercial microbial sources in $\text{Group I}$ with the products in $\text{Group II}$ ... $\text{P-3,Q-1,R-4,S-2}$ $\text{P-1,Q-3,R-2,S-4}$ $\text{P-1,Q-3,R-4,S-2}$
Match the commercial microbial sources in $\text{Group I}$ with the products in $\text{Group II}$.$\begin{array}{|l|l|l|l|} \hline & \text{Group I} & & \text{Group II} \...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Microbiology
gate2013
microbial-classification
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–
0
votes
0
answers
22
GATE2013-19
Hypophosphatemia is manifested by an $X-$linked dominant allele.What proportion of the offsprings from a normal male and an affected heterozygous female will manifest the disease? $1/2$ sons and $1/2$daughters all daughters and no sons all sons and no daughters $1/4$ daughters and $1/4$ sons
Hypophosphatemia is manifested by an $X-$linked dominant allele.What proportion of the offsprings from a normal male and an affected heterozygous female will manifest the...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Molecular Biology and Genetics:
gate2013
genetic-diseases
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–
0
votes
0
answers
23
GATE2013-13
The catalytic efficiency for an enzyme is defined as $K_{cat}$ $\frac{V_{max}}{K_{cat}}$ $\frac{k_{cat}}{K_m}$ $\frac{K_{cat}}{V_{max}}$
The catalytic efficiency for an enzyme is defined as$K_{cat}$$\frac{V_{max}}{K_{cat}}$$\frac{k_{cat}}{K_m}$$\frac{K_{cat}}{V_{max}}$
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Biochemistry
gate2013
enzyme
+
–
0
votes
0
answers
24
GATE2013-12
Which one of the following is an $ABC$ transporter? multidrug resistance protein acetylcholine receptor bacteriorhodopsin $ATP$ synthase
Which one of the following is an $ABC$ transporter?multidrug resistance proteinacetylcholine receptorbacteriorhodopsin$ATP$ synthase
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Biochemistry
gate2013
transporter
+
–
0
votes
0
answers
25
GATE2013-7
Endogenous antigens are presented on to the cell surface along with $MHC-II$ $MHC-I$ $F_c\gamma$receptor complement receptor
Endogenous antigens are presented on to the cell surface along with$MHC-II$$MHC-I$$F_c\gamma$receptorcomplement receptor
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Molecular Biology and Genetics:
gate2013
receptor
+
–
0
votes
0
answers
26
GATE2013-6
The role of an adjuvant isto prolong the persistence of antigen cross link the antigen increase the size of antigen avoid inflammation
The role of an adjuvant istoprolong the persistence of antigencross link the antigenincrease the size of antigenavoid inflammation
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Immunology
gate2013
antigen
+
–
0
votes
0
answers
27
GATE2013-3
Protein A, which has strong affinity to $F_C$ region of immunoglobulin, is extracted from $\text{Saccharomyces cerevisiae}$ $\text{Staphylococcus aureus}$ $\text{Streptococcus pyogenes}$ $\text{Streptococcus sanguis}$
Protein A, which has strong affinity to $F_C$ region of immunoglobulin, is extracted from$\text{Saccharomyces cerevisiae}$$\text{Staphylococcus aureus}$$\text{Streptococc...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Immunology
gate2013
+
–
0
votes
0
answers
28
GATE2013-5
Which one of the following aminoacids in proteins does $NOT$ undergo phosphorylation? Ser Thr Pro Tyr
Which one of the following aminoacids in proteins does $NOT$ undergo phosphorylation?SerThrProTyr
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Biochemistry
gate2013
aminoacids
+
–
0
votes
0
answers
29
GATE2013-4
The first humanized monoclonal antibody approved for the treatment of breast canceris Rituximab Cetuximab Bevacizumab Herceptin
The first humanized monoclonal antibody approved for the treatment of breast cancerisRituximabCetuximabBevacizumabHerceptin
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Immunology
gate2013
antibody-structure-and-function
+
–
0
votes
0
answers
30
GATE2013-2
Which one of the following modifications is common toboth protein and DNA? SUMOylation Nitrosylation Methylation Ubiquitination
Which one of the following modifications is common toboth protein and DNA?SUMOylationNitrosylationMethylationUbiquitination
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Biochemistry
gate2013
+
–
0
votes
0
answers
31
GATE2013-1
Under alkaline conditions, DNA is more stable than RNA because RNA forms secondary structures RNA is a single stranded molecule RNA has uracil in place of thymidine RNA is susceptible to hydrolysis
Under alkaline conditions, DNA is more stable than RNA becauseRNA forms secondary structuresRNA is a single stranded moleculeRNA has uracil in place of thymidineRNA is su...
Milicevic3306
7.9k
points
Milicevic3306
asked
Mar 25, 2018
Molecular Biology and Genetics:
gate2013
dna-rna
+
–
0
votes
0
answers
32
GATE2018-55
A rod shaped bacterium has a length of $2 \: \mu m$, diameter of $1 \mu m$ and density the same as that of water. If proteins constitute $15 \%$ of the cell mass and the average protein has a mass of $50$ kDa, the number of proteins in the cell is __________ ($1$ Da $= 1.6 \times 10^{-24}$g)
A rod shaped bacterium has a length of $2 \: \mu m$, diameter of $1 \mu m$ and density the same as that of water. If proteins constitute $15 \%$ of the cell mass and the ...
gatecse
1.4k
points
gatecse
asked
Feb 20, 2018
Biochemistry
gate2018
biochemistry
numerical-answers
+
–
0
votes
0
answers
33
GATE2018-53
Consider a simple uni-substrate enzyme that follows Michaelis-Menten kinetics. When the enzyme catalyzed reaction was carried out in the presence of $10$ nM concentration of an inhibitor, there was no change in the maximal velocity. However. the slope of the Lineweaver-Burk plot increased $3$-fold. The dissociation constant for the enzyme-inhibitor complex (in nM) is ____________
Consider a simple uni-substrate enzyme that follows Michaelis-Menten kinetics. When the enzyme catalyzed reaction was carried out in the presence of $10$ nM concentration...
gatecse
1.4k
points
gatecse
asked
Feb 20, 2018
Biochemistry
gate2018
biochemistry
numerical-answers
kinetics
+
–
0
votes
0
answers
34
GATE2018-52
First order deactivation rate constants for soluble and immobilized amyloglucosidase enzyme are $0.03 \text{ min}^{-1}$ and $0.005 \text{ min}^{-1}$, respectively. The ratio of half-life of the immobilized enzyme to that of the soluble enzyme is (rounded off to the nearest integer) ___________
First order deactivation rate constants for soluble and immobilized amyloglucosidase enzyme are $0.03 \text{ min}^{-1}$ and $0.005 \text{ min}^{-1}$, respectively. The ra...
gatecse
1.4k
points
gatecse
asked
Feb 20, 2018
Biochemistry
gate2018
biochemistry
numerical-answers
enzyme
kinetics
+
–
0
votes
0
answers
35
GATE2018-49
Yeast converts glucose to ethanol and carbon dioxide by glycolysis as per the following reaction: $C_6H_{12}O_6 \to 2C_2H_5OH + 2CO_2$Assuming complete conversion, the amount of ethanol produced (in $g$) from $200 \: g$ of glucose is (up to two decimal places) ____________
Yeast converts glucose to ethanol and carbon dioxide by glycolysis as per the following reaction: $$C_6H_{12}O_6 \to 2C_2H_5OH + 2CO_2$$Assuming complete conversion, the ...
gatecse
1.4k
points
gatecse
asked
Feb 20, 2018
Biochemistry
gate2018
biochemistry
numerical-answers
+
–
0
votes
0
answers
36
GATE2018-48
Mammalian cells in active growth phase were seeded at a density of $1 \times 10^5$ cells/ml. After $72$ hours, $1 \times 10^6$ cells/ml were obtained. The population doubling time of the cells in hours is (up to two decimal places) ________________
Mammalian cells in active growth phase were seeded at a density of $1 \times 10^5$ cells/ml. After $72$ hours, $1 \times 10^6$ cells/ml were obtained. The population doub...
gatecse
1.4k
points
gatecse
asked
Feb 20, 2018
Microbiology
gate2018
microbiology
microbial
growth
numerical-answers
+
–
0
votes
0
answers
37
GATE2018-47
In a chemostat, the feed flow rate and culture volume are $100$ ml/h and $1.0$ L, respectively. With glucose as substrate, the values of $\mu_{\text{max}}$ and $K_s$ are $0.2 \: h^{-1}$ and $1 \: g/L$, respectively. For a glucose concentration of $10 \: g/L$ in the feed, the effluent substrate concentration (in $g/L$) is _______
In a chemostat, the feed flow rate and culture volume are $100$ ml/h and $1.0$ L, respectively. With glucose as substrate, the values of $\mu_{\text{max}}$ and $K_s$ are ...
gatecse
1.4k
points
gatecse
asked
Feb 20, 2018
Biochemistry
gate2018
biochemistry
kinetics
numerical-answers
+
–
0
votes
0
answers
38
GATE2018-40
$5'$ capping of mRNA transcripts in eukaryotes involves the following events: Addition of GMP on the $5'$ end Removal of $\gamma$-phosphate of the triphosphate on first base at the $5'$ end $5'-5'$ linkage between GMP and the first base at $5'$ end Addition of methyl group ... is the correct sequence of events? P, Q, R, S P, R, Q, S Q, P, R, S Q, P, S, R
$5'$ capping of mRNA transcripts in eukaryotes involves the following events:Addition of GMP on the $5'$ endRemoval of $\gamma$-phosphate of the triphosphate on first bas...
gatecse
1.4k
points
gatecse
asked
Feb 20, 2018
Molecular Biology and Genetics:
gate2018
molecular
biology
+
–
0
votes
0
answers
39
GATE2018-39
Match the industrial products mentioned in Group I with their producer organisms in Group II ... $\text{P-2, Q- 1, R- 4, S-3}$ $\text{P- 3, Q- 1, R- 4, S-2}$
Match the industrial products mentioned in Group I with their producer organisms in Group II$\begin{array}{|l|l|l|l|} \hline & \textbf{Group I} && \textbf{Group II} \\ \h...
gatecse
1.4k
points
gatecse
asked
Feb 20, 2018
Microbiology
gate2018
microbiology
+
–
0
votes
0
answers
40
GATE2018-32
Which one of the combinations of the following statements is true about antibody structure? Limited proteolysis of rabbit IgG with the enzyme pepsin generates two antigen-binding regions (Fab) and an Fc fragment. Limited proteolysis of rabbit IgG with the enzyme papain generates a single ... composed of both light and heavy chains. P and Q only P and R only R and S only Q and S only
Which one of the combinations of the following statements is true about antibody structure?Limited proteolysis of rabbit IgG with the enzyme pepsin generates two antigen-...
gatecse
1.4k
points
gatecse
asked
Feb 20, 2018
Immunology
gate2018
immunology
+
–
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