Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
bacteria
basics of bacteria/ biology101
| Term | Definition |
|---|---|
| The Kingdom Monera | consists of all prokaryotes |
| prokaryotes | unicellular organisms that lack nuclear membranes. |
| (taxonomic kingdom) consists of two phylogenetically distinct groups | eubacteria and archaebacte |
| eukaryotes | organisms with nuclear membranes (Ex:protists, plants, animals-invertebrate and vertebrates and fungi) |
| most live in extremely hostile environments(Ex: extremely saline waters or hot sulfur springs) | |
| Some live in these harsh environments, but others inhabit locations ranging from surface soils to the intestinal tracks of termites. | eubacteria |
| Few cause diseases. Most are beneficial to other organisms | bacteria |
| producing food from inorganic material and light | photoautotrophs |
| Some have the ecologically important ability to fix nitrogen from the atmosphere, making it available to the roots of plants. | |
| saprophytes | |
| live symbiotically in the digestive tracks of other organisms and aid in the digestion of diverse food materials. | live symbiotically in the digestive tracks of other organisms and aid in the digestion of diverse food materials. |
| The structure and reproductive cycles of the Monerans | They lack distinct nuclei and complex organelles. |
| Specialized structures that take the form of internal membranes. | photosynthetic machinery |
| They have small prokaryotic chromosomes and plasmids | Moneran genetic material |
| How do most Monerans reproduce? | by binary fission |
| In what ways do prokaryotic and eukaryotic flagella differ? | Prokaryotic flagella-anchored in cell membrane &can spin freely,made up of subunits of flagellin. Eukaryotic flagella-covered by the cell membrane and are restricted to side-to-side motion, made of microtubules/ subunits of tubulin. |
| How do facultative and obligate anaerobes differ? | Both do not require oxygen for respiration. Facultative anaerobes are not bothered by the presence of oxygen, and some have a separate respiratory pathway for using oxygen when it is present. Obligate anaerobes, however, are poisoned by oxygen. |
| How have cyanobacteria been misclassified in the past? | Cyanobacteria have previously been classified as algae. While they do have the same type of chlorophyll found in algae, chlorophyll a, they lack membrane-bound chloroplasts or other organelles, and thus are prokaryotes. |
| What characteristics distinguish archaebacteria from eubacteria? | The cell walls of eubacteria are made of peptidoglycan, while archaebacterial cell walls can be composed of several diffferent compounds. Also, archaebacteria tend to live in much harsher environments than eubacteria. |
| How closely related are archae- and eubacteria? | The two Moneran groups are no more closely related to each other than each is to the eukaryotes. |
| What characteristic unifies archae- and eubacteria in the Kingdom Monera? | The archae- and eubacteria are prokaryotes. |
| By what characteristic are archaebacteria classified? What are the four types of archaebacteria? | . They are classified according to the environments in which they live. The four types are methanogens, thermoacidophiles, sulfur reducers, and halophiles. |
Created by:
vcopeland
Popular Biology sets