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.
Symptoms of salmonella usually start from 12 to 72 hours after the bacteria has been swallowed. The symptoms include abdominal cramps, headache, fever, and severe watery diarrhea.Nausea and vomiting may also occur. People infected with salmonella can have milder or no symptoms.almonella is bacteria that can cause a gastrointestinal infection known as salmonellosis. Usually salmonellosis is referred to as salmonella.. This infection can occur in humans and animals. Most people infected with salmonella are ill for four to seven days. The person may be ill enough to require hospitalization.