| A | B |
|---|
| parasites | living things that draws nutriments from another |
| toxins | waste products of micro-organisms |
| saprophytes | micro-organisms that feed on decaying matter |
| cell membrane | part of bacteria that controls entry and loss of material |
| pathogen | disease causing micro-organisms |
| binary fission | the way in which bacteria reproduce |
| extra-cellular | the way in which bacteria feed |
| control | part of experiment used to compare the effect of changing conditions |
| enzymes | substance that is secreted when bacteria and fungi feed |
