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If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 10^9 bp, then the length of the DNA is approximately:
The experimental proof for semiconservative replication of DNA was first shown in a:
A body performs simple harmonic motion about $x=0$ with an amplitude $a$ and a time period $T$. The speed of the body at $x=\frac{a}{2}$ will be:
An n-p-n transistor is connected in the common base configuration in a given amplifier. A load resistance of $800\, \Omega$ is connected in the collector circuit and the voltage drop across it is $0.8\text{ V}$. If the current amplification factor is $0.96$ and the input resistance of the circuit is $192\, \Omega$, the voltage gain and the power gain of the amplifier will respectively be:
Satellite DNA is a useful tool in:
Commonly used vectors for human genome sequencing are:
Activation energy of any chemical reaction can be calculated if one knows the value of:
The fraction of the original number of radioactive atoms that disintegrates (decays) during the average lifetime of a radioactive substance will be:
DNA or RNA segment tagged with a radioactive molecule is called:
DNA-dependent RNA polymerase catalyses transcription on one strand of the DNA which is called the?
Which one of the following experiments of Frederick Griffith resulted in the discovery of bacterial transformation?
An n-p-n transistor is connected in a common emitter configuration (see figure) in which collector voltage drop across load resistance ($800\ \Omega$) connected to the collector circuit is $0.8\text{ V}$. The collector current is:
The half-life of a radioactive isotope $X$ is 20 years. It decays to another element $Y$ which is stable. The two elements $X$ and $Y$ were found to be in the ratio 1:7 in a sample of a given rock. The age of the rock is estimated to be:
Removal of RNA polymerase III from nucleoplasm will affect the synthesis of:
Which chromosome in the human genome has the highest number of genes?
Two simple harmonic motions of angular frequency $100\text{ rad s}^{-1}$ and $1000\text{ rad s}^{-1}$ have the same displacement amplitude. The ratio of their maximum acceleration will be:
In the process of transcription in Eukaryotes, the RNA polymerase I transcribe -
The lac Operon consists of:
What initiation and termination factors are involved in transcription in prokaryotes?
A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?