Abstract. Carotenoids are indispensable pigments of the photosynthetic apparatus in plants, algae, and cyanobacteria and are produced, as well, by many bacteria and fungi.bstract. Carotenoids are indispensable pigments of the photosynthetic apparatus in plants, algae, and cyanobacteria and are produced, as well, by many bacteria and fungi.
Less commonly, pharyngitis is caused by a bacterial infection. Bacterial infections do require antibiotics. The most common bacterial infection of the throat is strep throat, which is caused by streptococcus A. Rare causes of bacterial pharyngitis include gonorrhea, chlamydia, and corynebacterium.iral Infection. Pharyngitis is most commonly caused by viral infections such as the common cold, influenza, or mononucleosis. Viral infections do not respond to antibiotics, and treatment is only necessary to help relieve symptoms.
The most common sites of bacterial infections in the upper respiratory system are the sinuses and throat. Pneumonia is the most common bacterial infection of the lower respiratory system.