In this Video, Ms. Jyoti Kumari in Biyani Group of Colleges explain about the general structure of DNA. DNA is made up of long polynucleotide chains. A nucleotide has three components i.e. A nitrogen base, A pentose sugar, A phosphate group. Nitrogenous base is linked to the pentose sugar through N-glycosidic linkage to form nucleoside but when phosphate group is linked to this nucleoside through phosphodiester linkage a nucleotide is formed and when many nucleotides are linked, then a polynucleotide chain is formed. Base pairing confers a very unique property to the polynucleotide chain.

In this video Ms. Aastha Pareek, Biyani Groups of colleges, Jaipur, explains about the types of solvents and their classification based upon proton donor and proton accepter, Ionization, non ionization and aqueous and non-aqueous solvents.

In this Video, Ms. Poonam Rajawat, Assistant Professor, Biyani Group of Colleges, describes about virus plaque assay. It is an assay to enumerate phage particle on solid agar media. A clear area formed on agar media known as Plaque. It is a double layered technique. Phage dilution was prepared in trypton broth and two drops of E. coli. were added when bacteriophage affect the bacteria, it causes lytic cycle and form plaque.

In this video Dr. Aastha pareek, Biyani Groups of colleges, Jaipur, explains the Disgonal relationship is some properties of lithium are different to own group i.e group first but it resembles with the magnesium which is belong the group second .

In this video MS. Dr. aastha pareek, Biyani Groups of colleges, Jaipur, explains the seven crystal system like triclinic , rhombhohedral, monoclinic etc.in which explain the symmetry of molecules, bravais space lattice and their types, and bond angles also.

video on Chordata Classification

In this Video, Ms. Deepika Rathore, assistant professor, Biyani Girls College, Jaipur, explains about the initiation step of Eukaryotic DNA replication, in which the ORC recognize the ARS and when ABF1 binds at B3, melting starts at B2 with the help of helicase and T-Ag protein. The Okazaki fragments are formed by the pol α and the leading strand is formed by the Pol δ which is called pol switching.