Gentamicin, sold under brand names Garamycin among others, is an antibiotic used to treat several types of bacterial infections. This may include bone infections, endocarditis, pelvic inflammatory disease, meningitis, pneumonia, urinary tract infections, and sepsis among others. It is not effective for gonorrhea or chlamydia infections. It can be given intravenously, by injection into a muscle, or topically. Topical formulations may be used in burns or for infections of the outside of the eye. I
All of the other chlorophylls and carotenoids involved in light absorption are referred to as accessory pigments. Another kind of accessory pigment found in some groups of algae and photosynthetic bacteria are the phycobili proteins, which may impart a red or blue color to the cells in which they occur.
Concept 7: Chlorophyll. Chlorophyll molecules embedded in the thylakoid membrane absorb light energy. These molecules are the most important pigments for absorbing the light energy used in photosynthesis. A chlorophyll molecule has a hydrophobic tail that embeds the molecule into the thylakoid membrane. The head of a chlorophyll molecule is a ring called a porphyrin. The porphyrin ring of chlorophyll, which has a magnesium atom at its center, is the part of a chlorophyll molecule that absorbs light energy.