List of top Biotechnology Questions

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

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

Mechanism of antibacterial action of polymyxins relies on the

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

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)

The 5' cap of eukaryotic mRNAs contains

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

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

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

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. \[ \begin{array}{c|c} \text{Group I} & \text{Group II (C=O stretching frequency cm}^{-1}\text{)}
\hline P:\; p\text{-amino acetophenone} & 1:\; 1677
Q:\; p\text{-nitro acetophenone} & 2:\; 1700
R:\; p\text{-methoxy acetophenone} & 3:\; 1684
\end{array} \]

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 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?

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

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

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

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

The correct order of electronegativity of the given elements is

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

The standard free energy change (\(\Delta G^0\)) of the binding reaction between different sweet molecules and a common sweet taste receptor are given. Which amongst these molecules is the sweetest at the same molar concentration?

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?

What is the ploidy level of a sporophyte in angiosperms?

Which one of the following hormones is produced by the adrenal gland?

After how many cycles of polymerase chain reaction (PCR), the amplified product of required length is generated for the first time from a chromosomal DNA template?