List of top Biotechnology Questions

Which of the following statement(s) is/are CORRECT for lac repressor expressed from the lacI gene?

Which of the following metabolite(s) accumulate(s) in the blood of a human adult consuming a ketogenic diet?

Which of the following statement(s) is/are CORRECT about 'stringent response' in bacteria?

Four alkyl halides, MeBr, EtBr, iPrBr, and tBuBr, undergo S\(_N\)2 reactions in the presence of hydroxide ion to yield the corresponding alcohols and the halide ion. The CORRECT order of the alkyl halides based on the rates of reactions is

Which of the following statement(s) is/are CORRECT about Deinococcus radiodurans?

The method(s) used to detect a DNA fragment of 150 base pairs is/are

The component(s) of the apoptosome is/are

The 5' cap of eukaryotic mRNAs contains

Which one of the following statements is CORRECT about Agrobacterium tumefaciens-mediated plant transformation?

Which of the following conditions is CORRECT for free expansion of an ideal gas under adiabatic condition? (q = heat, \(\Delta T = \) temperature difference, w = work)

Which of the following is the CORRECT combination of a synthetic auxin and a synthetic cytokinin?

Mechanism of antibacterial action of polymyxins relies on the

The receptors for gamma amino butyric acid (GABA) in humans are

Two charges \(10 \times 10^{-8}\,\text{C}\) and \(-6 \times 10^{-8}\,\text{C}\) are located 16 cm apart. The point(s) on the line joining the two charges, where the net electric potential is zero, will be [Take the potential at infinity to be zero]

The IR stretching frequency of the carbonyl (C=O) group of a typical saturated ketone is 1715 cm\(^{-1}\). The IR stretching frequencies for the carbonyl groups present in three different acetophenone derivatives are given. Match the molecules in Group I with their corresponding frequencies in Group II. \[ \begin{array}{c|c} \text{Group I} & \text{Group II (C=O stretching frequency cm}^{-1}\text{)}
\hline P:\; p\text{-amino acetophenone} & 1:\; 1677
Q:\; p\text{-nitro acetophenone} & 2:\; 1700
R:\; p\text{-methoxy acetophenone} & 3:\; 1684
\end{array} \]

Which of the following cell types is infected by the human immunodeficiency virus-1?

Bacterial cloning vectors and bacterial expression vectors are differentiated by the presence of

The final stage of peptidoglycan (PG) biosynthesis is marked by PG cross-link formation and remodeling. Which of the following enzymes does NOT take part in these processes?

Which of the following represents the CORRECT order of events in the eukaryotic cell cycle?

Which of the following statements about eukaryotic asymmetric cell division is NOT correct?

Which of the following activities is NOT possessed by the human immunodeficiency virus-1 reverse transcriptase?

The first evidence of ‘gene transfer’ was demonstrated in 1928 by

An electric circuit with a resistor of constant resistance ‘R’ is maintained at a constant voltage ‘V’. Based on Ohm’s law, if the current ‘I’ through the circuit is doubled, the power ‘P’ dissipated across the resistor is

Sequence comparison of which of the following genes is used as a measure of evolutionary divergence across bacterial species?

Which of the following terrestrial biomes has the highest animal diversity?