The Cell Lecture 13

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  • Created by: saraht83
  • Created on: 01-05-16 19:42
Advantages of multicellularity
eliminates 'cheaters', suppresses genetic conflict and reduces predation risk
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Cheater cells
exploit cells that form the other parts of the organism
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Colonies
almost immune to predation, stable even after predator is removed.
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Specialised cells
lead to a division of labour between different cells
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Colony formation
cells stick together, identical cells
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True metazoan
selective cell adhesion, cells have different properties, composed of genetically identical cells
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Single-celled organisms
must be able to reproduce and carry out all functions for survival
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Development involves
co-ordinated patterns of cell division, specialisation into different cell types and ordered assembly of specialised cells into tissues and organs
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Volvoceans
organised colonies of cells, each of which resembles the unicellular protist Chlamydomonas
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Gonium
not a true multicellular organism as all cells are identical
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Volvox
true division of labour, true multicellular organism
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Choanoflagellates
unicellular protists that form colonies during part of their life cycle
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Other cards in this set

Card 2

Front

exploit cells that form the other parts of the organism

Back

Cheater cells

Card 3

Front

almost immune to predation, stable even after predator is removed.

Back

Preview of the back of card 3

Card 4

Front

lead to a division of labour between different cells

Back

Preview of the back of card 4

Card 5

Front

cells stick together, identical cells

Back

Preview of the back of card 5
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