Cell Specialisation
- Created by: Eleanor Izzard
- Created on: 04-01-13 19:23
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- Cell Specialisation
- Specialised Cells
- Sperm Cell
- many mitochondria - lots of energy to generate movement of flaggelum
- specialised lysosome (acrosome) that releases enzymes onto the egg and allow sperm to penertrate
- small, long and thin - aerodynamic to ease movement
- single long undulipodium propels cell up uterine tract
- White Blood Cells (neutrophils)
- keep nucleus, enormous number of lysosomes produced to kill micro-organisms
- cytoplasm appears granular
- created from un-differentiated cells in bone marrow
- packed full of protein haemoglobin
- keep nucleus, enormous number of lysosomes produced to kill micro-organisms
- Root hair cell
- Hair like projection increases surface area
- large vacuole
- Red Blood Cells (erythrocytes)
- lose nucleus, mitochondria, golgi apparatus, rough endoplasmic reticulum
- packed full of protein haemoglobin
- change shape - biconcave disc
- Sperm Cell
- Organising the Organism
- Organs - a collection of tissues working together to form a certain function
- Organ System - made up of a number of organs working together to perform an overall life function
- Tissues - a collection of different types of cells that are similar to each other and perform a common function
- Differentiation
- the changes occurring in cells of a multicellular organism so that each different type of cell becomes specialised to perform a specific function
- cells can differentiate in a number of ways, changing the number of a specific organelle, the shape of the cell and/or the contents
- Size
- there is a physical limit to how large 1 cell can get - governed by the need for oxygen and nutrients and the support structures that would be required
- Specialised Cells
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