Biotechnology - Principles and Processes

This MCQ is based on Biotechnology - Principles and Processes(The major utility of the biological world is as a source of food. Biotechnology, the twentieth-century off-shoot of modern biology, changed our daily life as its products brought qualitative improvement in health and food production. The basic principles underlying biotechnological processes and some applications).

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Transgenic plants are develop by:

Introducing of foreign fenes Clone and genetically modified genes Genetic engineering Purified genes

Who discovered Restricted endonucleas enzymes?

Smith and Nathane Baiger Waxman Fleming

DNA obtained for DNA finger printing:

W.B.C. Hair root cells Body fluids None of these

Rising of dough is due to

Multiplication of yeast Production of CO2 Emulsification Hydrolysis of wheat flour starch into sugars.

The transfer of genetic material from one bacterium to another through the mediation of a vector-like virus is termed as:

Transduction Conjugation Transformation Translation.

Which of the given statement is correct in the context of observing DNA separated by agarose gel electrophoresis?

DNA can be seen in visible light DNA can be seen without staining in visible light Ethidium bromide stained DNA can be seen in visible light Ethidium bromide stained DNA can be seen under exposure to UV light.

In agarose gel electrophoresis, DNA molecules are separated on the basis of their

Size only

Charge to size ratio

All of the above

Charge only

The most important feature in a plasmid to be used as a vector is:

Origin of replication (ori)

Presence of a selectable marker

Presence of sites for restriction endonuclease

Its size

“Restriction” in Restriction enzyme refers to

Prevention of the multiplication of bacteriophage in bacteria