DNA molecules are actually made up of nucleotides, which is the substance that is made up of three parts. Each nucleotide has a phosphate, a ribose sugar (five-carbon sugar) a â¦ nd a nitrogeneous base (purines-Adenine,Thymine or pyramidines-Guanine,Cytosine).NA is made up of a chain of molecules called 'bases' - Adenine, Guanine, Thymine and Cytosine.
Physical. Salmonella bacteria are rod-shaped gram-negative bacteria. Gram-negative bacteria do not retain the crystal violet dye used in the gram staining method due to the fact that they have cell walls that are thin.Gram-negative bacteria are often harmful to a host, which is the case for many of the Salmonella bacteria.Salmonella bacteria are between 2 and 5 micrometers long and 0.7 to 1.5 micrometers in diameter. They have flagella, which are tail-like projections made of proteins that help the bacteria to move.ram-negative bacteria do not retain the crystal violet dye used in the gram staining method due to the fact that they have cell walls that are thin. Gram-negative bacteria are often harmful to a host, which is the case for many of the Salmonella bacteria.
Flagella are long, thread-like appendages which provide some live single cells with the ability to move, motility. Bacteria which have flagella are either rod or spiral-shaped and are known as bacilli and spirochetes, respectively. Cocci, or round bacteria, are almost all nonmotile.nimal sperm cells also have flagella. However, prokaryotic cells (such as bacteria) have flagella made up of the protein flagellin. Whereas, eukaryotic cells (such as sperm) which have a nucleus have flagella composed of tubulin proteins.