Gel electrophoresis is used for
cutting of DNA into fragments
separation of DNA fragments according to their size
construction of recombinant DNA by joining with cloning vectors
isolation of DNA molecule
Two bacteria found to be very useful in genetic engineering experiments are
Nitrosomonas and Klebsiella
Escherichia and Agrobacterium
Nitrobacter and Azotobacter
Rhizobium and Diplococcus
Polyethylene glycol method is used for
gene transfer without a vector
biodiesel production
seedless fruit production
energy production from sewage
Which one thing is not true about antibiotics?
The term “antibiotic” was coined by Selman Waksman in 1942
First antibiotic was discovered by Alexander Flemming
Each antibiotic is effective only against one particular kind of germ
Some persons can be allergic to a particular antibiotic
The technique of obtaining large number of plantlets by tissue culture method is called
plantlet culture
organ culture
micro-propagation
macro-propagation
In a standard ECG, which one of the following alphabets is the correct representation of the respective activity of the human heart?
R- repolarisation of ventricles
S-start of systole
T-end of diastole
P-depolarisation of the atria
An important step in the manufacture of pulp for paper industry from the woody tissues of palnt is the
preparation of pure cellulose by removing lignin
removal of oils present in the wood by treatment with suitable chemicals
removal of water from the wood by prolonged heating at approximately 500C
treatment of wood with chemical that breakdown cellulose
What is the best pH of the soil for cultivation of plants?
3.4-5.4
6.5-7.5
4.5-8.5
5.5-6.5
Which one of the following is being tried in India as a biofuel substitute for fossil fuels?
Jatropha
Azadirachta
Musa
Aegilops
Cry-1 endotoxins obtained from Bacillus thuringiensis are effective against
mosquitoes
flies
nematodes
boll worms
