What is the structure and function of the cytoskeleton? Starter: name 2 membrane bound organelles and 2 non membrane bound organelles.

Task 1 Complete the card sort matching the name of the organelle to its function and image. NO NOTES

Task 2 Complete the PP question in your packs

Task 3 - The Cytoskeleton Read the extract from the book. What are the main jobs of the cytoskeleton. 1 2 3

The Ultrastructure of a Cell Electron microscopes have revealed a lot of new structures inside cells. These are involved in keeping the cell alive. These are called organelles and all have a specific job

The Cytoskeleton – glossary word This has 3 major jobs. It is the network of protein fibres that keep the cells shape by providing a framework. It allows movement of the cell. It aids transport within cells.

2) Movement within the cell Actin – like muscle fibres, can move against each other and allow movement of WBC and some organelles e.g. vesicles.

Microtubules – glossary 25nm diameter tubes made of tubulin that are involved in movement of and within cells. They can move microorganisms through liquids. Other proteins called microtubule motors, on the microtubules allow other things to move Chromosomes during mitosis Vesicles move within the cell These processes involve ATP.

Movement of Eukaryotic cells (eukaryotic cells have a true nucleus)

Cilia(short) and Undulipodia(long) These move cells or have a sweeping motion. Mobility is from the 9 microtubules in a circle around 2 central microtubules. (9+2 arrangement) which move against each other to produce movement.

Complete the sheet “ The Cytoskeleton” using pages 10-11 to help Key words Actin filaments Microtubules Cilia Flagella Tubulin Microtubule motors Protein