"കോശം" എന്ന താളിന്റെ പതിപ്പുകൾ തമ്മിലുള്ള വ്യത്യാസം
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വരി 11:
== കോശങ്ങളുടെ വർഗ്ഗീകരണം ==
{| class="toccolours" border="1" style="margin:auto; border:1px solid gray; border-collapse:collapse; clear:both;"
|+'''Table 1: Comparison of features of prokaryotic and eukaryotic cells'''
|-
|
!Prokaryotes
!Eukaryotes
|-
!Typical organisms
|[[bacterium|bacteria]], [[archaea]]
|[[protist]]s, [[fungus|fungi]], [[plant]]s, [[animal]]s
|-
!Typical size
|~ 1–10 [[µm]]
|~ 10–100 [[µm]] ([[spermatozoon|sperm cells]], apart from the tail, are smaller)
|-
!Type of [[cell nucleus|nucleus]]
|[[nucleoid region]]; no real nucleus
|real nucleus with double membrane
|-
!DNA
|circular (usually)
|linear molecules ([[chromosome]]s) with [[histone]] [[protein]]s
|-
!RNA-/protein-synthesis
|coupled in [[cytoplasm]]
|RNA-synthesis inside the nucleus<br />protein synthesis in cytoplasm
|-
![[Ribosome]]s
|50S+30S
|60S+40S
|-
!Cytoplasmatic structure
|very few structures
|highly structured by endomembranes and a [[cytoskeleton]]
|-
![[Chemotaxis|Cell movement]]
|[[Flagellum|flagella]] made of [[flagellin]]
|flagella and [[Cilium|cilia]] containing [[microtubule]]s; [[lamellipodia]] and [[filopodia]] containing [[actin]]
|-
![[Mitochondrium|Mitochondria]]
|none
|one to several thousand (though some lack mitochondria)
|-
![[Chloroplast]]s
|none
|in [[algae]] and [[plant]]s
|-
!Organization
|usually single cells
|single cells, colonies, higher multicellular organisms with specialized cells
|-
![[Cell division]]
|[[Binary fission]] (simple division)
|[[Mitosis]] (fission or budding) <br />[[Meiosis]]
|}
=== പ്രോകാരിയോട്ടിക് കോശം ===
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=== യൂക്കാരിയോട്ടിക് കോശം ===
[[പ്രമാണം:Biological cell.svg|thumb|400px|left|ജന്തുകോശം([[യൂക്കാരിയോട്ടിക്ക്]]), കോശാന്തരഭാഗങ്ങളോടുകൂടി.<br />]]
== കോശഘടന ==
=== കോശസ്തരം ===
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