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Biotechnology : Principles and Processes

Multiple Choice Questions

141.

A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is

142.

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

143.

Polysome is formed by

Several ribosomes attached to a single mRNA
Many ribosomes attached to a strand of endoplasmic reticulum
A ribosome with several sub-units
Ribosomes attached to each other in a linear arrangement

144.
The product of biotechnology is

transgenic crops (GM crops)

humulin

biofertilizer

All of the above

biofertilizer

Biotechnology may be, simply defined as the use of microorganisms animals or plant's cells or thin components to generate products and services useful to human beings. Nowadays, biotechnology is very helpful in producing transgenic crops or Genetically Modified (GM) crops, transgenic animals, biofertilizers, antibodies, hormones like Humulin (genetically engineered human insulin), antibodies and various other useful products.