The top 20 highest-paid biopharma CEOs 1. Len Schleifer, Regeneron $41.97 million. Schleifer may have popped up on our CEO pay list just a few years ago--and stayed at or near the top--but he's been plugging away at Regeneron since he founded the company in 1988.
Most bacterial species contain a single type of chromosome, but it may be present in multiple copies. Several thousand different genes are interspersed throughout the chromosome; structural gene sequences (encoding proteins) account for the majority of bacterial DNA; nontranscribed DNA sequences between adjacent genes are termed intergenic regions.
In addition to a cell membrane, prokaryotes have a cell wall, and if motile, most possess flagella. Outside the cell wall, there may be a capsule or a slime layer. Reproduction - Bacteria has only one set of chromosome (always haploidic). Unicellular organisms increase in size to approximately twice the original size. At that time the cell (mother cell) divides into two daughter cells by binary fission (Figure 11-37b). With each cell division the cell number doubles.