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Solving time: 4 mins

According to Watson-Crick model, DNA exists as a …A… . The two strands of polynucleotides are …B… . The backbone is formed by the …C…, …D… chain. The nitrogen bases are more or less …E… to this backbone.
Choose the correct options for the blanks A, B, C, D and E

A
A-chain, B-perpendicular, C-carbonate, D-base, E-parallel

B
A-helix, B-parallel, C-sugar, D-phosphate, E-perpendicular

C
A-double helix, B-antiparallel, C-phosphate, D-sugar, E-perpendicular

D
A-strand, B-parallel, C-sulphate, D-sugar, E-perpendicular

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Text SolutionText solutionverified iconVerified

A-double helix, B-antiparallel, C-phosphate, D-sugar, E-perpendicular.
In Watson and Crick's model, the two strands of the DNA double helix are held together by hydrogen bonds between nitrogenous bases on opposite strands. Each pair of bases lies flat, forming a "rung" on the ladder of the DNA molecule. Base pairs aren't made up of just any combination of bases.
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Question Text
According to Watson-Crick model, DNA exists as a …A… . The two strands of polynucleotides are …B… . The backbone is formed by the …C…, …D… chain. The nitrogen bases are more or less …E… to this backbone.
Choose the correct options for the blanks A, B, C, D and E
TopicBiomolecules
SubjectBiology
ClassClass 11
Answer TypeText solution:1
Upvotes58