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1. A DNA molecule contains two strands of poly deoxyribonucleotide strands twisted together to
form a double helix. The two strands are antiparallel, i.e., one strand runs in the 5’ to 3’ direction
while the other in 3’ to 5’ direction. The sugar-phosphate backbone is found on the exterior of
this helix and the bases are branching towards the center.
RNA, in the majority cases, consists of one strand (polymer of ribonucleotides) of nucleic acids
linked together by 3',5'-phosphodiester bonds.
2. The mRNA molecules which are transcribed from genes of the total genome and have the base
sequence complementary to DNA, carry DNA,s genetic information's for the assembly of amino
acids into the polypeptide chains, to the cytoplasmic sites of protein synthesis, the ribosomes. to
which they become associated to participate in codon-anticodon interaction with tRNA, are
called informational or messenger RNAs (mRNA) .
Solution
1. A DNA molecule contains two strands of poly deoxyribonucleotide strands twisted together to
form a double helix. The two strands are antiparallel, i.e., one strand runs in the 5’ to 3’ direction
while the other in 3’ to 5’ direction. The sugar-phosphate backbone is found on the exterior of
this helix and the bases are branching towards the center.
RNA, in the majority cases, consists of one strand (polymer of ribonucleotides) of nucleic acids
linked together by 3',5'-phosphodiester bonds.
2. The mRNA molecules which are transcribed from genes of the total genome and have the base
sequence complementary to DNA, carry DNA,s genetic information's for the assembly of amino
acids into the polypeptide chains, to the cytoplasmic sites of protein synthesis, the ribosomes. to
which they become associated to participate in codon-anticodon interaction with tRNA, are
called informational or messenger RNAs (mRNA) .

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1. A DNA molecule contains two strands of poly deoxyribonucleotide s.pdf

  • 1. 1. A DNA molecule contains two strands of poly deoxyribonucleotide strands twisted together to form a double helix. The two strands are antiparallel, i.e., one strand runs in the 5’ to 3’ direction while the other in 3’ to 5’ direction. The sugar-phosphate backbone is found on the exterior of this helix and the bases are branching towards the center. RNA, in the majority cases, consists of one strand (polymer of ribonucleotides) of nucleic acids linked together by 3',5'-phosphodiester bonds. 2. The mRNA molecules which are transcribed from genes of the total genome and have the base sequence complementary to DNA, carry DNA,s genetic information's for the assembly of amino acids into the polypeptide chains, to the cytoplasmic sites of protein synthesis, the ribosomes. to which they become associated to participate in codon-anticodon interaction with tRNA, are called informational or messenger RNAs (mRNA) . Solution 1. A DNA molecule contains two strands of poly deoxyribonucleotide strands twisted together to form a double helix. The two strands are antiparallel, i.e., one strand runs in the 5’ to 3’ direction while the other in 3’ to 5’ direction. The sugar-phosphate backbone is found on the exterior of this helix and the bases are branching towards the center. RNA, in the majority cases, consists of one strand (polymer of ribonucleotides) of nucleic acids linked together by 3',5'-phosphodiester bonds. 2. The mRNA molecules which are transcribed from genes of the total genome and have the base sequence complementary to DNA, carry DNA,s genetic information's for the assembly of amino acids into the polypeptide chains, to the cytoplasmic sites of protein synthesis, the ribosomes. to which they become associated to participate in codon-anticodon interaction with tRNA, are called informational or messenger RNAs (mRNA) .