BIOLOGY
NUCLEIC ACIDS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
It is a double helix with the bases on the inside.
|
|
|
It is a double helix with the bases on the outside.
|
|
|
It is a single helix.
|
|
|
It is a triple helix.
|
Detailed explanation-1: -Answer and Explanation: The secondary structure of DNA is best described as A) double antiparallel helical strands. The structure of DNA is a double helix, two parallel strands that are joined in the middle and twist around each other.
Detailed explanation-2: -DNA: The secondary structure of DNA consists of two polynucleotide chains wrapped around one another to form a double helix.
Detailed explanation-3: -Answer: The right answer to the given question is option A) A double helix. It best describes the structure of a DNA molecule. Moreover, the DNA is not a single stranded and it does not comprise amino acids.
Detailed explanation-4: -The DNA double helix biopolymer of nucleic acid is held together by nucleotides which base pair together. In B-DNA, the most common double helical structure found in nature, the double helix is right-handed with about 10–10.5 base pairs per turn.
Detailed explanation-5: -Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs.