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DNA structure
Mr.Ayman Elsangary
Al_Rayyan Independent Secondary School For Boys
How big (or small) can you imagine
Virus
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Virus
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Bigger
Virus
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Bigger
Virus
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Bigger
Virus
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Bigger
Virus
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Yellow
bacteria
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Green
bacteria
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RBC
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Yeast
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Pollen
grain
Lymphocyte
RBC
Yeast
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Dust
mite
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Human hair
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This is how small things can be and we are talking smaller
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DNA stands for
DNA
DNA is a very long,
thin molecule
made of subunits
called nucleotides.
The nucleotides
are linked together
like a chain.
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Each nucleotide is constructed of 3 parts:
A phosphate group,
A 5 carbon sugar molecule, ( deoxyribose)
A nitrogen base.
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DNA ‘s full name, deoxyribonucleic acid.
The sugar and phosphate groups are the
same for each nucleotide.
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The nitrogen base, may
be any one of four
different kinds.
The four nitrogen bases
include
adenine (A),
guanine (G),
thymine (T),
cytosine (C).
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Adenine and guanine
belong to a class of
organic molecules called
purines. Purines are
large molecules with a
double ring of carbon and
nitrogen atoms.
Thymine and cytosine are
pyrimidines, which have
a single ring of carbon
and nitrogen atoms.
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DNA is a part of almost every living thing
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How many strands DNA has
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Sugar phosphate backbone lies
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What is inside DNA 2 strands
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This question is from thanawya
3ama exam
Find the complementary strand for:
5 AGGGTAAACGCGATT 3
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Thanks for good listening
C U @ National exams
Having the highest scores
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