Read the following statement and choose the option that correctly fills the blanks (A) and (B). In some prokaryotes like cyanobacteria, there are membranous extensions into the cytoplasm called ___(A)___ which contain pigments, whereas in most bacteria, the membranous extensions that help in cell wall formation and DNA replication are called ___(B)___.

Step-by-step solution

In prokaryotic cells, the plasma membrane extends into the cytoplasm to form specialized structures. In cyanobacteria, these membranous extensions are called chromatophores, which contain pigments involved in photosynthesis. Thus, (A) is Chromatophores. In most other bacteria, the extensions of the plasma membrane into the cell form a special membranous structure called the mesosome. Mesosomes help in cell wall formation, DNA replication, and distribution to daughter cells. Thus, (B) is Mesosomes. Thylakoids are fo