Bacterial Morphology
The bacteria are prokaryotic organisms that are single-celled, and are found to exist as free-living and possess a microscopic size. The morphology is found to vary in the bacteria, where some of them are identified as individual organisms and the others are detected as colonies. The size and shape of the bacterial cell also represent its morphology.
Bacterial cell structure
Bacteria are single-celled, tiny creatures that may enter healthy tissues and grow rapidly. Bacteria are microscopic organisms that are tiny and unicellular. These are members of the prokaryote kingdom. They live in water, air, soil, and all-natural environments. They are used in industrial and therapeutic processes, and they support a wide range of plant and animal life. The first organism to appear on the planet. Bacteria-like creatures are the oldest known fossils. Bacteria can consume a wide range of organic and inorganic elements, and some may even survive in harsh conditions.
Why bacterial chromosome is circular?
Bacteria are single celled microorganisms and their cell structure is simpler than the other organisms. Bacterial cell is gel like matrix, which is composed of enzymes, nutrients, water, gases, and wastes. It contains cell structures such as a chromosome, ribosome, and plasmids. Bacterial cells don’t have the nucleus and that’s why their DNA content is found in the nucleoid, which is a region of cytoplasm without membrane, or as a plasmid.
The genetic information of bacterial cells is contained in a single loop of the DNA. They contain circular DNA molecule as most of the prokaryotes and the circular DNA molecule has no free ends. These free ends create challenges to the cells with respect to replication of DNA and stability. Cells that contain chromosomes with free ends or telomeres (as in eukaryotes) have mechanisms to overcome these challenges.
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