NEET BIOLOGY

Detailed explanation-1: -The DNA molecule is a long, coiled double helix that resembles a spiral staircase. In it, two strands, composed of sugar (deoxyribose) and phosphate molecules, are connected by pairs of four molecules called bases, which form the steps of the staircase.

Detailed explanation-2: -The structure of DNA is a double helix. In other words, it is a double stranded molecule that twists like a spiral staircase. The outsides of the molecule, the railings of the staircase, are made of deoxyribose sugars alternating with phosphates. This part of the molecule is sometimes called the “backbone".

Detailed explanation-3: -DNA has a double helix structure, much like a spiral staircase, it has two single strands that join and twist together. The ‘steps’ of the staircase are made up of the four bases of DNA called adenine (A), cytosine (C), guanine (G) and thymine (T). They bind together in complementary pairs (A with T, C with G).

Detailed explanation-4: -The DNA double helix is similar to a spiral staircase: the sugar-phosphate backbone is like the twisting handrails of the staircase, and the nitrogen-containing bases are like the steps that connect the railings to each other.

Detailed explanation-5: -A DNA molecule is made up of two linked strands that wind around each other to resemble a twisted ladder in a helix-like shape. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases: adenine (A), cytosine (C), guanine (G) or thymine (T).