HELLO STUDENTS: DAY- 16 Evening
SPECIFIC CONCEPTS FOR NEET BIOLOGY
*The role of DNA ligase in the construction of a recombinant DNA molecule is :
Formation of phosphodiester bond between two DNA fragments.
*The correct statement in the context of observing DNA separated by agarose gel electrophoresis :
Ethidium bromide stained DNA can be seen under exposure to UV light.
*Which one has popularized the Polymerase Chain Reaction (PCR) ?
Availability of 'thermostable' DNA polymerase.
*The palindromic base sequences in DNA can be easily cut at about the middle by some particular restriction enzyme ?
5'-GAATTC-3'
3'-CTTAAG-5'
*The sequence recognised by EcoRI is :
5'-GAATTC-3' 3'-CTTAAG-5'
* The sequences of process involved in rDNA technology :
1) Isolation of DNA
2) Fragmentation of DNA by RE
3) Isolation of desired DNA fragment
4) Ligation of DNA fragment into vector 5) Transferring rDNA into host 6)Culturing host cells in a medium at large scale
7) Extraction of the desired product.
*During sewage treatment,biogases are produced which includes :
Methane , Hydrogen sulphide,Carbon dioxide
*Which group of symptoms are indicative of pneumonia ?
Difficulty in respiration,fever,chills,cough, headache.
*The correct option of Immunoglobulins (Antibodies) :
IgA,IgG,IgE,IgD,IgM
*The sequential steps for breeding are :
1) Screening germplasm for resistance sources
2) Hybridization of selected parents
3) Selection and evaluation of hybrid
4) Testing and release of new varieties.
Mr.R.Soundarapandian, MSc, MEd, MPhil,
PG Asst Zoology
SIR MCTM Boys Higher Secondary School,
SIR MCTM Boys Higher Secondary School,
Purasawalkam Chennai-84.
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