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- Chromosome (12667 bytes)
1: ...int where the two chromatids touch, and where the microtubules attach. (3) Short arm. (4) Long arm.]]
5: ...e [[centromere]], with one or two arms projecting from the centromere. The ends of the chromosomes are...
17: [[image:chromatin_chromosome.png|frame|none|'''Figure 2:''' Different levels of DNA c...
19: ...wo opposite ends of the cell. During mitosis, the microtubules pull the chromatids apart, so that each daughter...
37: <td>[[Drosophila melanogaster|Fruit fly]]</td> - Cilium (3845 bytes)
3: ...e plasma membrane containing doublets of parallel microtubules. They are approximately 10 micro metres in lengt...
8: ...iduct]]s, the beating of cilia moves the [[ovum]] from the [[ovary]] to the [[uterus]].
13: ...m may also be used to emphasize their differences from bacterial flagella.
15: ...called a '''[[basal body]]'''. Basal body is made from the [[centriole]], which migrates to the cell s... - Cytoskeleton (4391 bytes)
23: ===Microtubules===
24: ''Main article: [[microtubule]]s''
36: ...ionships are so distant that they are not obvious from protein sequence comparisons alone, the similar...
46: ...m [[Analogy (biology)|analogous]] to that used by microtubules during eukaryotic [[mitosis]]. - Centriole (976 bytes)
1: ...f ''Drosophila'', nine doublet microtubules. The microtubules which make up the '''centriole''' are very stabl... - Eukaryote (9230 bytes)
17: ...r [[three-domain system|domain]]. The name comes from the Greek ''eus'' or true and ''karyon'' or nut...
19: ...rganelle]]s, and a [[cytoskeleton]] composed of [[microtubule]]s and [[microfilament]]s, which plays an importa...
25: ... membrane-bound organelles are ultimately derived from such vesicles.
27: ...tly, they generally enter vesicles, which bud off from the smooth section. In most eukaryotes, the pr...
33: ...a. They are now generally held to have developed from [[endosymbiosis|endosymbiotic]] prokaryotes, pr... - Organelle (935 bytes)
2: ...nd were also identified through the use of [[cell fractionation]].
4: A few large organelles probably originated from [[endosymbiont]] [[bacterium|bacteria]]:
27: * [[microtubule]] - Flagellum (8951 bytes)
2: ...e plasma membrane containing doublets of parallel microtubules; 55 micrometres in length. Function: in humans, ...
8: ...ok" which allows the helix to point directly away from the cell. A shaft runs between the hook and the...
12: ... thought that bacterial flagella may have evolved from such pores.
40: ...cilium]] or undulipodium, is completely different from the prokaryote flagella in structure and in evo...
42: ... is driven by the protein [[dynein]] bridging the microtubules all along its length and forcing them to slide r... - Mitosis (8111 bytes)
10: [[Image:Gray2.png|right|frame|Diagram showing the changes which occur in the...
19: ...increasing the length of the spindle (growing the microtubules), the centrioles push apart to opposite ends of ...
26: ...phate|ATP]] molecules to move a chromatid along a microtubule, like a train on a train track. Two kinetochores ...
28: When the spindle grows to sufficient length, the microtubules begin searching for kinetochores to attach to.
33: ...hem involving the generation of tension when both microtubules are attached to the kinetochore. - Green alga (4059 bytes)
13: ...''green algae''' are the large group of [[alga]]e from which the [[embryophyte]]s (higher plants) emer...
15: ...reen chloroplasts, which were presumably acquired from ingested green algae, in the latter case retain...
20: ...]] without centrioles. Sexual reproduction varies from fusion of identical cells (isogamy) to fertiliz...
46: [[fr:Algue verte]]
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