List of top Biotechnology Questions

In a bacterium, a mutation resulted in an increase of \( K_s \) (substrate-specific constant) for ammonium from 50 \( \mu M \) to 5000 \( \mu M \) without affecting \( \mu_{max} \). The specific growth rate (\( \mu \)) of the mutant growing on 0.5 mM ammonium in the medium decreases by a factor of ..........
The total number of DNA molecules present after 5 cycles of polymerase chain reaction (PCR) starting with 3 molecules of template DNA is .................
A metallic wire of electrical resistance 40 \( \Omega \) is bent in the form of a square loop. The resistance between any two diagonally opposite corners is ....... \( \Omega \).
The total number of lone pairs of electrons in NO\(_2\)F is ............
Proinsulin is an 84 residue polypeptide with six cysteines. How many different disulfide combinations are possible?
A 0.1% (w/v) solution of a protein absorbs 20% of the incident light. What fraction of light is transmitted if the concentration is increased to 0.4%? [Correct to two decimal places]
C\(_3\) plants utilize 18 molecules of ATP to synthesize one molecule of glucose from CO\(_2\). How many molecules of ATP equivalents are used by C\(_4\) plants to synthesize one molecule of glucose from CO\(_2\)?
The reaction of \( (R)-2-bromobutane \) with CN\(^-\) proceeds by ..........
Which of the following statement(s) is/are true?
BF\(_3\) reacts readily with ...........
Which of the following cell types can develop from myeloid lineage?
Electromagnetic waves ...........
The advantage(s) of storing chemical energy in the form of starch and not as free glucose is/are that it ...........
pK\(_a\) increases in the order .........
Pick the correct statement(s) with respect to the inter-conversion of the topoisomers of a circularly closed double stranded DNA.
According to the kinetic theory of gases, the average energy of a diatomic molecule in an ideal gas depends on ............
Indole acetic acid (IAA) is involved in ...........
Which one of the following statements is a correct description of modes of action of taxol and colchicine?
A particle starting from rest is subjected to a constant force. The plot of distance traveled along the direction of the force as a function of time is a/an ..............
Which one of the following statements is INCORRECT with respect to bacterial conjugation?
The free energy required to synthesize a mixed anhydride bond of 1,3-bisphosphoglycerate is generated by the oxidation of ________.
The technique that involves impacting samples with electrons is ...............
The orbital angular momentum of hydrogen atom in the ground state is ............
The dimensions of coefficient of viscosity are .............
At what pH does poly-Glu in an aqueous solution form α-helical structure?