plasma membrane

bacterial cell

1 |m

eukaryotic eukaryotic

Figure 1.7. Organization of prokaryotic and eukaryotic cells.

acid (DNA). The structure and function of organelles will be described in detail in subsequent chapters. Table 1.1 provides a brief glossary of the major organelles and summarizes the differences between prokaryotic and eukaryotic cells.

Example Box 1.1

Sterilization by Filtration

Because even the smallest cells are larger than 1 ^m, harmful bacteria and protists can be removed from drinking water by passing through a filter with 200-nm-diameter holes. Filters can vary in size from huge, such as those used in various commercial processes, to small enough to be easily transportable by backpackers. Filtering drinking water greatly reduces the chances of bringing back an unwanted souvenir from your camping trip!

Table 1.1. Differences Between Prokaryotic and Eukaryotic Cells

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