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Beschreibung
Karteikarten von James Curry, aktualisiert more than 1 year ago
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Erstellt von James Curry
vor mehr als 6 Jahre
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| Frage | Antworten |
| What is differentiation? | The process by which a cell changes to become specialised for a job, developing different subcellular structures and becoming a different type of cell. |
| When does differentiation occur? | Mostly as the organism develops. The ability to differentiate is generally lost at an early stage (after they become specialised) However, lots of plants cells don't ever lose the ability |
| How are sperm cells specialised? | For reproduction- to get the male DNA to the female DNA long tail, streamlined head- to help it swim lots of mitochondria- supply energy enzymes in head- break through egg cell membrane |
| How are nerve cells specialised? | For rapid signalling- carrying electric signals around body long- cover more distance branched connections- connect to other nerve cells and create a network throughout the body |
| How are root hair cells specialised? | For contracting quickly long- more space to contract lots of mitochondria- supply energy |
| How are phloem and xylem cells specialised? | For transporting substances around the plant Long, joined end to end- form tubes hollow, few subcellular structure- stuff can flow through |
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