CBSE
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
Gyms revoluta is popularly known as
Sago palm
Royal palm
Date palm
Sea palm
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
In DNA, when AGCT occurs, their association is as per which of the following pair
A-G, C-T
A-T, G-C
A-C, G-T, A-C, E-T
All of these
Skin colour is controlled b
Single gene
3 pairs of genes
2 pairs of genes
2 pairs of genes with an intragene
In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is
Indian Council of Medical Research (ICMR)
Council for Scientific and Industrial Research (CSIR)
Genetic Engineering Appraisal Committee (GEAC)
Research Committee on Genetic Manipulation (RCGM)
The product of biotechnology is
transgenic crops (GM crops)
humulin
biofertilizer
All of the above
All monerons
Contain DNA and RNA
Demonstrate a long circular strand of DNA, not formed enclosed in a nuclear membrane
Are bacteria
All of the above
The correct order of steps in Polymerase Chain Reaction (PCR) is
Extension, Denaturation, Annealing
Annealing, Extension, Denaturation
Denaturation, Annealing, Extension
Denaturation, Extension, Annealing
A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is
60
240
120
480