In this article we will discuss about the definition of mesosomes. Mesosomes are the invaginated structures formed by the localized infoldings of the plasma membrane. The invaginated structures comprise of vesicles, tubules of lamellar whorls (Fig.4.15). Generally mesosomes are found in association with nuclear area or near the site of cell division. They are absent in eukaryotes. The lamellae are [...]
The following points highlight the six main components of cytoplasm of bacteria. The components are: 1. Ribosomes 2. Molecular Chaperones 3. Nucleoids 4. Plasmids 5. Cytoplasmic Inclusions 6. Spore and Cysts. Component # 1. Ribosomes: All living cells contain ribosomes which act as a site of protein synthesis. High number of ribosomes represents high rate of protein synthesis and vice [...]
In this article we will discuss about the presence of pigments in photosynthetic bacteria. Because of the presence of carotenoids in all photosynthetic tissues their role is anticipated in photosynthesis. The tissue/cells rich in carotenoids devoid of chlorophyll do not photosynthesize. Light energy absorbed by carotenoids appears to be transferred to chlorophyll a or bacteriochlorophyll a and utilized in the [...]