click below
click below
Normal Size Small Size show me how
bacteria and viruses
lecture 15
| Question | Answer |
|---|---|
| bacteria are | single celled prokaryotes |
| bacterial shapes include | rods, cocci and spiral |
| bacteria may be | photosynthetic, scavengers or heterotrophic |
| bacteria reproduce asexually by | binary fission |
| an apoplast is an area | outside the cell membrane |
| the greater the number of stomata | the more susceptible the plant is to disease |
| stages in the bacterial growth curve | lag, log, stationary and death |
| Pseudomonas syringae | rod shaped bacterial pathogen..brown spot disease |
| pathovar | means a type of variety of the disease |
| coryneum blight is a fungal infection which causes | shot hole disease |
| viruses consist of | DNA/ RNA and a protein coat |
| an obligate parasite | can only live inside in a cell |
| steps in viral replication are | attachment, uncoating, synthesis and release |
| Plasmodesmata | junctions between cells. viruses move through them |
| Aphids are vectors for | disease |
| an example of a plant virus is | Potato virus Y |
| symptoms of potato virus Y include | crinkling, necrosis, and leaf drop |
| to control potato virus Y | burn of the stalks early in the season |