EVERYDAY SCIENCE

Detailed explanation-1: -So, 1 bacterium can multiply to 2 in 20 minutes, 4 in 40 minutes, and so on.

Detailed explanation-2: -In bacterial cells, the genome consists of a single, circular DNA chromosome; therefore, the process of cell division is simplified. Mitosis is unnecessary because there is no nucleus or multiple chromosomes.

Detailed explanation-3: -The process is a lot simpler than mitosis or meiosis, because bacteria don’t have multiple chromosomes that have to be sorted out correctly to the two daughter cells. Thus, bacteria are able to grow and divide much faster than eukaryotic cells can.

Detailed explanation-4: -For example, Clostridium perfringens, one of the fastest-growing bacteria, has an optimum generation time of about 10 minutes; Escherichia coli can double every 20 minutes; and the slow-growing Mycobacterium tuberculosis has a generation time in the range of 12 to 16 hours.

Detailed explanation-5: -It is given that; bacterial cell divides every one minute and it takes 15 minutes for a cup to be one-fourth full becoz every one minutes becomes double, generally bacteria devides by binary fisson ie-every one divison two new bacteria is produced.