# Recent questions tagged gate2015

1
Choose the most appropriate word from the options given below to complete the following sentence. The principal presented the chief guest with a _________, as token of appreciation. momento memento momentum moment
2
Choose the appropriate word/phrase, out of the four options given below, to complete the following sentence: Frogs _________ croak roar hiss patter
3
Choose the word most similar in meaning to the given word: Educe Exert Educate Extract Extend
4
Operators $\square$, $\lozenge$ and $\rightarrow$ are defined by: $a \: \square \: b = \dfrac{a-b}{a+b}$; $a \: \lozenge \: b = \dfrac{a+b}{a-b}$; $a \rightarrow b = ab$. Find the value of $(66 \: \square \: 6) \rightarrow (66 \: \lozenge \: 6)$. $-2$ $-1$ $1$ $2$
5
If $\log_x (5/7) = -1/3$, then the value of $x$ is $343/125$ $125/343$ $-25/49$ $-49/25$
6
The following question presents a sentence. part of which is underlined. Beneath the sentence you find four ways of phrasing the underlined part. Following the requirements of the standard written English, select the answer that produces the most effective sentence. Tuberculosis, together ... causes of death has the rank of one of the leading causes of death are one of the leading causes of death
7
Read the following paragraph and choose the correct statement. Climate change has reduced human security and threatened human well being. An ignored reality of human progress is that human security largely depends upon environmental security. ... contradictory to environmental security. Human security is contradictory to environmental security. Human progress depends upon environmental security.
8
Fill in the missing value
9
A cube of side $3$ units is formed using a set of smaller cubes of side $1$ unit. Find the proportion of the number of faces of the smaller cubes visible to those which are NOT visible. $1:4$ $1:3$ $1:2$ $2:3$
10
Humpty Dumpty sits on a all every day while having lunch. The wall sometimes breaks. A person sitting on the all falls if the wall breaks. Which one of the statements below is logically valid and can be inferred from the above sentences? Humpty Dumpty always ... sometimes while having lunch Humpty Dumpty never falls during dinner When Humpty Dumpty does not sit on the wall, the wall does not break
11
Which one of the following complement proteins is the initiator of the membrane attack complex $C3a$ $C3b$ $C5a$ $C5b$
12
Levinthal’s paradox is related to protein secretion protein degradation protein folding protein trafficking
13
Which one of the following is a second generation genetically engineered crop? Bt brinjal Roundup soyabean Golden rice Bt rice
14
Based on the heavy chain, which one of the following antibodies has multiple subtypes? IgM IgD IgE IgG
15
The Cytokinetic organelle in plant cells is centriole Phragmoplast proplastid chromoplastid
16
Anergy refers to nitochondrial dysfunction allergy to environmental antigens unresponsiveness to antigens a state of no energy
17
ABO blood group antigens in humans are differentiated from each other on the basis of sialic acid lipids spectrin glycoproteins
18
Which one of the following organisms is used for the determination of phenol coefficient of a disinfectant? Salmonella typhi Escherichia coli Candida albicans Bacillus psychrophilus
19
A single subunit enzyme converts $420$ $\mu$moles of substrate to product in one minute. The activity of the enzyme is ________ $\times 10^{-6}$ Kalal.
20
Which one of the following amino acids has the highest probability to be found on the surface of a typical globular protein in aqueous environment? Ala Val Arg Ile
21
Which one of the following is NOT a product of denitrification in Pseuadomonas? $N_2$ $N_2O$ $NO_2^-$ $NH_4^+$
22
The determinant of the matrix $\begin{bmatrix} 3 & 0 & 0 \\ 2 & 5 & 0 \\ 6 & -8 & -4 \end{bmatrix}$ is __________
23
Which one of the following features is NOT required in a prokaryotic expression vector? $\textit{oriC}$ Selection marker CMV promoter Ribosome binding site
24
Production of monoclonal antibodies by hybridoma technology requires splenocytes osteocytes hepatocytes thymocytes
25
Which one of the following is INCORRECT about a typical apoptotic cell? Phosphatidylserine is presented on the outer cell surface Cytochrome c is released from mitochondria Mitochondrial membrane potential does not change Annexin-V binds to the cell surface
26
Identify the file format given below: $>$P$1$; JMFD Protein X – Homo sapiens MKALTARQQEVFDLIRDHISRTLRQQGDWL GDE FASTA NBRF GCG
27
Which one of the following relations holds true for the specific growth rate $(\mu)$ of a microorganism in the death phase? $\mu=0$ $\mu<0$ $\mu=\mu_{\text{max}}$ $0<\mu<\mu_{\text{max}}$
28
How many $3$-tuples are possible for the following amino acid sequence? MADCMWDISEASE $4$ $5$ $11$ $12$
29
How many different protein sequences of $100$ residues can be generated using $20$ standard amino acids? $100^{20}$ $100 \times 20$ $20^{100}$ $100! \times 20!$
30
In DNA sequencing reactions using the chain termination method, the ratio of ddNTPs to dNTPs should be $0$ $< 1$ $1$ $>1$
31
Which one of the following graphs represents uncompetitive inhibition?
32
Choose the appropriate pair of primers to amplify the following DNA fragment by the polymerase chain reaction (PCR). $\textrm{5' - GACCTGTGG- - - - - - - - - - - - - - - - - - ATACGGGAT - 3'}$ $\textrm{3' - CTGGACACC - - - - - - - - - - - - - - - - - - TATGCCCTA - 5'}$ ... $P$ and $R$ $P$ and $S$ $Q$ and $R$ $Q$ and $S$
33
Consider the following infinite series: $1+ r+r^2 +r^3+ \dots \dots \infty$ If $r = 0.3$, then the sum of this infinite series is ____________
34
$\begin{array}{cc} 2x_1+ x_2 = 35 \\ 5x_1 + bx_2 = 7.5 \end{array}$ The system of linear equations in two variables shown above will have infinite solutions, if and only if, $b$ is equal to _________
35
The interaction between an antigen $(Ag)$ and a single-chain antibody $(Ab)$ was studied using Scatchard analysis. The result is shown below. The affinity of interaction and the total concentration of antibody, respectively, can be determined from slope and $Y$-intercept $Y$-intercept and slope $X$-intercept and slope slope and $X$-intercept
36
An isolated population on an island has the following genotypic frequencies: $\begin{array}{|c|c|c|c|} \hline \textrm{Genotype} & AA & Aa & aa \\ \hline \textrm{Frequency} & 0.3 & 0.4 & 0.3 \\ \hline \end{array}$ Assuming that there are only two alleles ($A$ and $a$) for the gene, the genotypic frequency of $AA$ in the next generation will be __________
37
How many rooted and unrooted phylogenetic trees, respectively, are possible with four different sequences? $3$ and $15$ $15$ and $3$ $15$ and $12$ $12$ and $3$
Match the compounds in $\text{Group I}$ with the correct entries in $\text{Group II}$ ... $\text{P-5, Q-2, R-1, S-3}$ $\text{P-4, Q-2, R-1, S-3}$ $\text{P-4, Q-5, R-3, S-1}$
Oxygen transfer was measured in a stirred tank bioreactor using dynamic method. The dissolved oxygen tension was found to be $80 \%$ air saturation under steady state conditions. The measured oxygen tensions at $7$ s and $17$ s were $55\%$ and $68\%$ air saturation, respectively. The volumetric mass transfer coefficient $K_{La}$ is __________ $s^{-1}$
Match the microorganism in $\text{Group I}$ with their fermentation products in $\text{Group II}$ ... $\text{P-5, Q-3, R-2, S-4}$ $\text{P-3, Q-4, R-1, S-2}$ $\text{P-3, Q-4, R-2, S-1}$