The twisted ladder shape is really a "double helix". The four substances are Guanine, Adenine, Cytosine, and Thymine.
The sides of the DNA ladder are made up of alternating sugar (deoxyribose) and phosphate molecules. These sugar-phosphate backbones run along the outside edges of the DNA molecule, providing structural stability.
You are probably thinking of DNA. The base pairs link the two strands together like a series of steps. However, since it is helical, it might be more accurate to compare it to a spiral staircase.
In the Watson and Crick model of DNA, the steps of the ladder are composed of nucleotides. Each nucleotide consists of a sugar molecule (deoxyribose), a phosphate group, and one of four nitrogenous bases: adenine (A), thymine (T), guanine (G), or cytosine (C). These nucleotides are linked together through phosphodiester bonds to form the backbone of the DNA molecule.
Watson and Crick's Name for the twisted ladder of DNA
Each rung of the DNA double helix is made up of a pair of nitrogenous bases (adenine-thymine or guanine-cytosine). The sides of the ladder are made up of alternating sugar (deoxyribose) and phosphate molecules. Hydrogen bonds hold the nitrogenous bases of the rungs together, creating the structure of the DNA double helix.
adenine, thymine, guanine, and cytosine
The steps of the DNA ladder are made up of nitrogenous bases. These bases include adenine, thymine, cytosine, and guanine. They pair up in a specific manner where adenine pairs with thymine, and cytosine pairs with guanine.
Phosphate and sugar make up the sides of a DNA ladder.
The phosphate groups and deoxyribose molecules makes up the DNA ladder.
The sides of the DNA ladder are alternating deoxyribose (sugar) molecules and phosphate molecules. The DNA bases attach to the sugar molecules.
Heck No!
The Base Pairs
The 'steps' or 'rungs' of the DNA 'ladder' are complimentary pairs of bases bonded by hydrogen bonds. The bases are Adenine, Thymine, Cytosine and Guanine. Adenine always bonds to Thymine and Cytosine always bonds to Guanine.
The 'steps' or 'rungs' of the DNA 'ladder' are complimentary pairs of bases bonded by hydrogen bonds. The bases are Adenine, Thymine, Cytosine and Guanine. Adenine always bonds to Thymine and Cytosine always bonds to Guanine.
The sugar-phosphate backbone of DNA is made up of alternating sugar (deoxyribose) and phosphate molecules. These molecules form the "rungs" of the DNA ladder, connecting the nitrogenous bases that make up the steps of the ladder.
The sides of the DNA ladder are composed of alternating sugar (deoxyribose) and phosphate groups, which form the backbone of the molecule. The steps of the ladder are made up of nitrogenous base pairs, specifically adenine paired with thymine and cytosine paired with guanine. These base pairs are held together by hydrogen bonds, creating the double helix structure characteristic of DNA.
The sides of the DNA ladder are made up of alternating sugar (deoxyribose) and phosphate molecules. These sugar-phosphate backbones run along the outside edges of the DNA molecule, providing structural stability.