List of top Biotechnology Questions asked in Indian Institute Of Technology Joint Admission Test for MSc

Match the animals in Group I with the major form of excreted nitrogen metabolite in Group II. \[ \begin{array}{c|c} \text{Group I} & \text{Group II} \\ \hline P:\; \text{Bony fishes} & 3:\; \text{Ammonia} \\ Q:\; \text{Lions} & 1:\; \text{Urea} \\ R:\; \text{Birds} & 2:\; \text{Uric acid} \\ \end{array} \]

Which of the following condition(s) lead(s) to reduced affinity of O₂ for human hemoglobin?

Match the pair of organisms in Group I with their community interaction pattern in Group II. \[ \begin{array}{c|c} \text{Group I} & \text{Group II} \\ \hline P:\; \text{Cattle egrets – African buffalo} & 3:\; \text{Commensalism} \\ Q:\; \text{Lynx – Fox} & 1:\; \text{Competition} \\ R:\; \text{Acacia tree – Pugnacious ants} & 4:\; \text{Mutualism} \\ S:\; \text{Leopard – Antelope} & 2:\; \text{Predation} \\ \end{array} \]

A buffer solution is composed of 0.1 M acetic acid and 0.15 M sodium acetate. The change in pH of 1 L buffer solution upon addition of 50 mL of 1.0 M NaOH is ............... (rounded off to 2 decimals)

A cDNA was synthesized from the mRNA of a eukaryotic gene. After cloning and sequence analysis, the double-stranded cDNA of 614 bp revealed 125 bp 5'-UTR and 120 bp 3'-UTR. The number of amino acids present in the polypeptide encoded by this gene is ............... (answer in integer)

A rare genetic disorder resulting from homozygosity for a recessive allele (\( r \)) occurs in 2 out of every 10,000 individuals in a population. Assuming that (i) the disorder is not lethal, (ii) the disorder does not impact reproductive success, (iii) no new mutations are introduced in the population, and (iv) the population follows Hardy-Weinberg equilibrium, the percentage (%) of the carriers in the population that pass the \( r \) allele to offspring is .......... (rounded off to 1 decimal)

In a reaction \( A + B \to C \), the initial rate of formation of C at 25°C was measured for different initial concentrations of A and B as given. The overall order of the reaction with respect to both A and B is ................. (answer in integer)
% Requires: \usepackage{graphicx} \begin{table}[h] \centering \begin{tabular}{|c|c|c|c|} \hline Experiment & Initial [A] & Initial [B] & Initial rate of formation of C
& (mol L\textsuperscript{-1}) & (mol L\textsuperscript{-1}) & (mol L\textsuperscript{-1} s\textsuperscript{-1})
\hline 1 & 0.4 & 0.3 & 0.078
2 & 0.8 & 0.3 & 0.312
3 & 0.4 & 0.6 & 0.156
4 & 0.8 & 0.6 & 0.624
\hline \end{tabular} \caption{Experimental data showing initial concentrations and rates of formation.} \label{tab:experimental_data} \end{table} \flushleft \newpage

The number of 7 letter words (with or without meaning) starting with the letter B that can be formed using the letters of the word BIOLOGY is .............. (answer in integer)

A population of bacterial cells grows from 10,000 to 100,000,000 cells in 6 hours. The generation time of the bacterial population is ........... min. (rounded off to 2 decimals)

A candle is placed 18 cm in front of a concave mirror to generate a real, inverted and doubly magnified image. The radius of curvature of the concave mirror is ................ cm. (answer in integer)

In a sampling expedition near a peninsula, 180 dolphins from a large population of dolphins were captured and marked by tagging their dorsal fins. The tagged dolphins were then allowed to join back into the population. In a subsequent expedition, 42 dolphins were photographed from the same large population. Among these, 7 dolphins contained the tags. Assuming that the population size remains the same and that tags were not lost, the estimated population size of dolphins in the peninsula is ........... (answer in integer)

Three particles A, B, C with masses of 100 g, 200 g, and 300 g, respectively, are placed at the vertices of an equilateral triangular structure with a side length of 2 m. A is placed at the \( (0, 0) \) position and B is placed at \( (2, 0) \) position in a Cartesian coordinate system. Assume that \( \triangle ABC \) lies parallel to the base. The distance between the center of mass and the position of the particle A is ........... m. (rounded off to 2 decimals)

\( E^\circ \) value of a Daniell cell \( \text{Zn} | \text{Zn}^{2+} \, (aq) || \text{Cu}^{2+} \, (aq) | \text{Cu} \) is ............ V. (rounded off to 2 decimals)

An insect weighing 5 g takes off vertically for a distance of 100 cm with a speed of 4 m s\(^{-1}\) by using its hind legs. Ignoring the resistance due to air, the magnitude of the average net force exerted by the hind legs during the take-off is ............ N. (rounded off to 3 decimals)

In a farm animal breeding programme, the animal with the dominant A phenotype, the recessive b phenotype, the dominant D phenotype, and the recessive e phenotype are commercially important. The inheritance of these traits follows Mendelian laws. From the tetra-hybrid cross of two genotypes AaBbDdEe and AaBbDdEe, the expected frequency of offspring that will show all the above-mentioned desired phenotypes is ................... (rounded off to 3 decimals)

A forest has four different tree species (A, B, C, and D) and their numbers are: \( A = 60 \); \( B = 20 \); \( C = 10 \); and \( D = 10 \). The Shannon biodiversity index of the trees in this forest is ................... (rounded off to 2 decimals)

The wavelength of a photon emitted during a transition from \( n = 3 \) to \( n = 2 \) state in the H atom is .............. nm. (answer in integer).

Free energy change for transport of an uncharged solute across a membrane against a \(1 \times 10^3\) fold concentration gradient at 25°C is ............... kJ mol\(^{-1}\). (rounded off to 2 decimals) \[ R = 8.315 \, \text{J mol}^{-1} \, \text{K}^{-1} \]

In a plant species, the genotype \( DDEE \) is crossed with the genotype \( ddee \); and the F1 is test crossed. Considering that the two genes are linked and 20 map unit (cM) apart in the chromosome, the percentage (%) of the test cross progeny with the genotype \( ddee \) is ........................ (answer in integer)

The limit of the function \( \lim_{x \to 2} \frac{2x^2 + 2x - 12}{x^2 - 4} \) is .............. (rounded off to 1 decimal)

Which of the following statement(s) is/are CORRECT in the classical ‘ABC model’ for genetic control of flower development?

In ‘Futile Cycle’ chemical energy is dissipated as heat due to two opposite biochemical reactions. Which of the following biochemical reaction(s) is/are a part of ‘Futile Cycle’?