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Ch. 6A
Flashcards for studying Ch. 6A
| Question | Answer |
|---|---|
| the kingdom whose members were first found in extreme environments | Archaea |
| Are bacteria generally more helpful or harmful to people? | helpful |
| rod-shaped bacteria | bacillus |
| they are more helpful than harmful | bacteria |
| proper conditions for bacterial growth | availability of moisture, oxygen, warm temps. and ability to get rid of wastes, certain pH range, overcrowding |
| How do bacteria reproduce? | binary fission, asexually |
| three bacterial shapes | spherical, rod-shaped and spiral |
| sphere shape bacteria | coccus |
| the process in which plasmids are exchanged between bacteria | conjugation |
| fungi and bacteria are important in the natural environment because they do this. | decompose wastes |
| long whiplike, hairlike structure that propels certain bacteria in movement | flagella |
| no prokaryote has this organelle | nucleus |
| a unicellular organism that DOES NOT HAVE a nucleus and other membrane-bound organelles | prokaryote |
| spiral-shaped bacteria | spirillum |
| prefix for clumps or clusters of bacteria | staph- |
| bacteria arranged end to end in long chains | strep- |
| What are 5 foods produced with bacterial help? | yogurt, cheese, dill pickles, sauerkraut, green olives |
| type of asexual reproduction, binary _____ | FISSION |
| What makes Archaea different from Bacteria? | 1. Cell walls lack a compound 2. DNA more similar to eukaryotes. 3. Sometimes found in extreme environments |
| The gummy boundary some bacteria have outside their cell walls for protection. | capsule |
| Organisms that contain a single circular chromosome. | bacteria |
| Smaller circular strands of DNA in addition to the main chromosome of a bacterium | Plasmids |
| Substance contained in the cell walls of bacteria that makes them different from Archaea and other organisms with cell walls | peptidoglycan |
| What first discovered Archaea were called since they were found in harsh environments | extremophiles |
| The DNA and other essential parts of a bacterium within a protective covering that allows the bacterium to survive unfavorable conditions. | endospore |
| 5 beneficial roles of bacteria | Keep less friendly bacteria away, fix nitrogen for use by plants, digest cellulose for ruminants, decompose dead stuff and wastes, used to producing or processing certain foods |
| process through which some bacteria become resistant to antibiotics | conjugation |
| conditions that would slow the growth of bacteria | high or low temps, dryness, high or low pH, overcrowding, buildup of waste materials, lack of oxygen |
| What are bacteria called that have become resistant to one or more types of antibiotic. | superbugs |
| a medicine used to save lives because it destroys harmful bacteria and cures infections | antibiotic |
| What makes Bacteria and Archaea different from the other kingdoms? | are prokaryotic; don't have a nucleus |
Created by:
Mr.JFoster
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