Difference between revisions of "Bacteria"
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===Meaning=== | ===Meaning=== | ||
[[File:Bacteria.png|right|300px|thumb|A [[Magnify|magnified]] image of several '''bacteria'''.]] | [[File:Bacteria.png|right|300px|thumb|A [[Magnify|magnified]] image of several '''bacteria'''.]] | ||
| − | Bacteria are [[unicellular]] [[micro-organism]]s that have no [[nucleus]], [[mitochondria]] or [[chloroplast]] but do have [[cytoplasm]], a [[cell membrane]] and a [[Cell Wall|cell wall]]. | + | [[Bacteria]] are [[unicellular]] [[micro-organism]]s that have no [[nucleus]], [[mitochondria]] or [[chloroplast]] but do have [[cytoplasm]], a [[cell membrane]] and a [[Cell Wall|cell wall]]. |
: Singular [[Noun]]: '''Bacterium''' | : Singular [[Noun]]: '''Bacterium''' | ||
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: [[Bacteria]] can cause disease but some are important to keep us healthy. | : [[Bacteria]] can cause disease but some are important to keep us healthy. | ||
: Some [[bacteria]] have a tail called a [[flagellum]]. | : Some [[bacteria]] have a tail called a [[flagellum]]. | ||
| − | : [[Bacteria]] do not have a nucleus. | + | : [[Bacteria]] do not have a [[Cell Nucleus|nucleus]]. |
| − | : The [[DNA]] of [[bacteria]] is in a loop. There are also smaller | + | : The [[DNA]] of [[bacteria]] is in a loop. There are also smaller rings of [[DNA]] called [[plasmid]]s. |
{| class="wikitable" | {| class="wikitable" | ||
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| style="height:20px; width:200px; text-align:center;" |A [[diagram]] showing the features of a '''bacterium'''. | | style="height:20px; width:200px; text-align:center;" |A [[diagram]] showing the features of a '''bacterium'''. | ||
|} | |} | ||
| + | |||
| + | ==Key Stage 3== | ||
| + | ===Meaning=== | ||
| + | [[Bacteria]] are [[unicellular]] [[Prokaryotic Cell|prokaryotes]] (with no [[membrane]] bound [[organelle]]s). | ||
| + | |||
| + | ===About Bacteria=== | ||
| + | : [[Bacteria]] can cause disease but some are important to keep us healthy. | ||
| + | : Some [[bacteria]] have a tail called a [[flagellum]] propel it move through [[water]]. | ||
| + | : Some [[bacteria]] are encased in a [[Slime Capsule|slime capsule]] which protects them from some [[toxic]] [[chemical]]s. | ||
| + | : [[Bacteria]] do not have a [[Cell Nucleus|nucleus]]. | ||
| + | : The [[DNA]] of [[bacteria]] is in a loop. There are also smaller rings of [[DNA]] called [[plasmid]]s. | ||
Revision as of 20:42, 4 November 2018
Key Stage 3
Meaning
A magnified image of several bacteria.
Bacteria are unicellular micro-organisms that have no nucleus, mitochondria or chloroplast but do have cytoplasm, a cell membrane and a cell wall.
About Bacteria
- Bacteria can cause disease but some are important to keep us healthy.
- Some bacteria have a tail called a flagellum.
- Bacteria do not have a nucleus.
- The DNA of bacteria is in a loop. There are also smaller rings of DNA called plasmids.
 |
| A diagram showing the features of a bacterium. |
Key Stage 3
Meaning
Bacteria are unicellular prokaryotes (with no membrane bound organelles).
About Bacteria
- Bacteria can cause disease but some are important to keep us healthy.
- Some bacteria have a tail called a flagellum propel it move through water.
- Some bacteria are encased in a slime capsule which protects them from some toxic chemicals.
- Bacteria do not have a nucleus.
- The DNA of bacteria is in a loop. There are also smaller rings of DNA called plasmids.