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.
Salmonella is a bacteria that makes people sick. It was discovered by an American scientist named Dr. Salmon, and has been known to cause illness for over 125 years. Most people infected with Salmonella develop diarrhea, fever, and abdominal cramps between 12 and 72 hours after infection.The illness usually lasts 4 to 7 days, and most individuals recover without treatment.here are many different kinds of Salmonella bacteria. Salmonella serotype Typhimurium [PDF - 15 pages] and Salmonella serotype Enteritidis [PDF - 15 pages] are the most common in the United States. Salmonella infections are more common in the summer than winter.