GEOLOGY

Detailed explanation-1: -Bacteria are single-celled organisms Bacteria are very simple compared to most other organisms. They are made up of just one cell – and that cell is smaller and less complex than most of the other cell types in existence.

Detailed explanation-2: -Prokaryotic cells are generally smaller and simpler than eukaryotic cells; in addition to the absence of a nucleus, their genomes are less complex and they do not contain cytoplasmic organelles or a cytoskeleton (Table 1.1).

Detailed explanation-3: -The bacteria cell envelope is a complex multilayered structure that serves to protect these organisms from their unpredictable and often hostile environment. The cell envelopes of most bacteria fall into one of two major groups.

Detailed explanation-4: -Prokaryotic cells are very simple and primitive. They have no true nucleus, and have no membrane-bound organelles. Prokaryotes simply have a cell membrane that encloses the contents, often a cell wall around the cell membrane, genetic information and ribosomes to make proteins all inside the cytoplasm.