Structure of DNA & RNA, Nucleic Acids (Part - 25) - Biomolecules, Chemistry, Class 12 Video Lecture

hello friends this video biomolecule
spar 25 is brought to you by exam clear
calm no more fear from exam secondary
and tertiary structure primary structure
secondary structure and tertiary
structure for the nucleic acid right you
see here what is happening here is these
are my nuclear types
nucleobases this is for the nucleotide
these are my nuclear bases this is my
backbone that is my sugar and the
phosphoric acid and this is our nuclear
bases so we talk about the primary
structure fire mission is nothing but
the sequence of letter that indicates
the nucleotides example Aug right G you
see all this and three of these will
form one codon three B's will form one
Kouros so for every success nothing but
sequence of letter that indicates order
of nucleotides so in DNA will use the GA
CD in DNA or RNA we use twins of G ACU
because T is not used uracil is used
thanks
so this sequence so primary sex right on
the word sequence of nucleotides those
each sequence will represent one
information and these sequence is
responsible for give me character and
this has a direct impact on the
functioning of living organism because
and the sequence also help in finding
the parents of a kid because a parent
will pass on this sequence to decay
almost the same so with that there's a
match they can say okay this kid belongs
with a spirit so primary sex is nothing
but the sequence of nucleotides so once
I have got the sequence then I need to
form the secondary structure right and
this is for DNA there's a double strand
helix structure and Jane Watson and
Francis Shrek gave this structure to
this DNA double stranded helix structure
so if you see in DNA they are to nucleic
acid chain are warmed about each other
and held together by hydrogen mod you
see this is one chain this is one chain
is other chain chain one and chain to
right these two chains are bought behind
this hydrogen one would be nice
then in space of billions pair of bases
we have a hydrogen morning and there's
only certain pairs which is complement
to each other for example my G my goai
being mean will form a bond with
cytosine you see green and blue will
form a bond similarly adenine will form
a bond with thymine PC yellow hydrated
form a bond yellow red yellow red yellow
red red
so green forms born with blue and yellow
with red that is the pairing right so
they are calm these two strands a
complement to each other actually
they're complementary because they force
a hydrogen bond between specific pairs
only so H bond between specific only
example G will form with see he will
form it P so once that what the
secondary structure but if you see to
get the exact precise 3d structure we
have to take into consideration the
geometrical and the steric constant so
then comes the tertiary structure here
if you see there's so many secondary
structure combine to form a tertiary
structure right when you talk
take into consideration all this
geometrical and steady constant you talk
about as a tertiary structure we you
don't have quaternary structure for
nucleic acids we have only two
instructions for nucleus thank you
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