To build a simple DNA model, make a double helix shape with beads, their color corresponding to the basic constituents of a DNA molecule: phosphate, sugar and base. Follow the correct order of how the parts of the DNA molecule are connected to each other.Continue Reading
The construction block for the DNA molecule is called a nucleotide. It consists of a sugar molecule, a phosphate group and one of the nucleobases. There are four of these: adenine, abbreviated as A, guanine (G), cytosine (C) and thymine (T). Nucleobases constitute the steps on the spiral ladder, which is the shape of the DNA molecule. Each step is a pair of bases. Guanine only pairs with cytosine, and adenine only with thymine. The sides of the double helix ladder consist of alternating phosphate groups and sugar molecules.
The monomers of DNA and RNA are nucleotides, which are made up of a phosphate group, a five-carbon sugar and a nitrogenous base. In DNA, the nitrogenous bases are adenine, cytosine, guanine and thymine. In RNA, the nitrogenous bases are adenine, guanine, cytosine and uracil.Full Answer >
According to The Tech Museum of Innovation, DNA is soluble in water because the sugar and phosphate molecules that make up the DNA backbone are hydrophilic. DNA bases are hydrophobic but are protected from the water by the DNA backbones of the two DNA strands.Full Answer >
DNA replication is a process whereby a single DNA molecule produces two identical copies. Each side of the DNA’s double-helix structure extends in the opposite direction, allowing it to split down the middle. Once split, each side serves as a template for a new strand. In the case of prokaryotic cells, the process occurs in the cytoplasm, whereas in eukaryotic cells, the replication occurs in the nucleus.Full Answer >
DNA stores information in a sequence of adenine, cytosine, guanine and thymine on a backbone of two deoxyribose molecules, which intertwine in a double helix. In nature, this information is read by RNA molecules and turned into proteins.Full Answer >