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Which of the following accurately describes the structure of DNA?
a. DNA is in the form of antiparallel strands twisted as a double helix.
b. DNA is made up of nucleotides, containing a 3-carbon sugar, a phosphate group, and base.
c. A always pairs with C, and G always pairs with T.
d. DNA consists of four bases: A, G, C, and U.

Respuesta :

option B. is wrong because nucleotides made of 5 - carbon sugars, not 3-C .option C is wrong because Apairs with T and C pairs with G not the other way around. option D is wrong as DNA consists of A,G,C and T. U is found in RNA. the correct answer is A. DNA is in the form of antiparallel strands twisted as a double helix. nucleotides together make strands, 2 of these strands which are antiparallel to each other twist around each other forming a double helix.
 
therefore A is the correct answer
Kasiyamironov
Among the choices given, the one that accurately describes the structure of DNA is D. DNA is in the form of anti-parallel strands twisted as a double helix. 

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