Function of the Golgi Body.

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Function of the Golgi Body P1

The golgi body, also known as golgi apparatus or golgi complex. It is a network of stacked sacs found within nucleated cells. The golgi body stores, packages and distributes the proteins and lipids made in the endoplasmic reticulum.

Proteins, which are meant to return to the endoplasmic reticulum, carry a distinctive tag. The golgi apparatus recognises the tag and transports the proteins back to the endoplasmic reticulum. However some proteins and lipids are sent to the surface of the cell to be released into the external environment.

Structure and Function of Epithelial Tissues P2

Structure:

The epithelial tissue is the layer of cells covering the outside of organs and the skin. These types of cells are firmly attached to each other and rest on a basement membrane, they also have a free surface.

There are many different types of epithelial tissue all depending on how many layers and the shape of the individual cells.

1. Simple Epithelium - has only one layer of cells. It can either be :

* Squamous - which are thin and flat. (1)

* Cuboidal - these