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Golgi Body

Golgi Body

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This lesson will describe the structure and function of a cell's golgi body.

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Tutorial

What's Covered

Welcome to today’s lesson on the Golgi body. In this lesson today you are going to learn about the structure and function of the Golgi body in cells. Specifically, you will look at:

  1. Golgi Body Overview
  2. Golgi Body Function
  3. Golgi Body Structure

1. Golgi Body Overview

The Golgi body is a cell organelle that is found in eukaryotic cells.

Term to Know

Golgi Body

A cell organelle that packages lipids and proteins to be transported out of the cell

Eukaryotic cells are cells that contain a nucleus, such as your own cells. So it's an organelle only found in eukaryotic cells.

Hint

The Golgi body is sometimes referred to as the Golgi apparatus. You might hear it either way, but they're the same thing. Golgi body or Golgi apparatus: it's the same organelle that has the same function.


2. Golgi Body Function

The function of the Golgi body is to modify, package, and transport materials throughout the cell. The Golgi body, like the endoplasmic reticulum, is a part of the endomembrane system.

Term to Know

Endomembrane System

The system of organelles responsible for synthesizing, packaging, and transporting proteins and lipids

The endomembrane system is a system that makes lipids, modifies proteins, and packages molecules to send them out to various parts of the cell.

Big Idea

The endomembrane system contains the Golgi, fats, and the ER, or the endoplasmic reticulum.


3. Golgi Body Structure

The Golgi body basically is thought of as flattened sacs.

Example Some people will refer to them as kind of being like pancakes piled on top of each other. That's kind of a common way that you may have heard of the structure of a Golgi body.

So you have all these flattened sacs, kind of piled on top of each other, and within those flattened sacs, there are enzymes. The enzymes help to finish the production of proteins and lipids that were started by the endoplasmic reticulum.

Hint

The endoplasmic reticulum is kind of like the assembly line that would help to assemble the proteins and lipids. From there, they're sent to the Golgi body, where they're kind of finished off, and then packaged. Once they're finished off, they're packaged into something called a vesicle.

Term to Know

Vesicle

A membrane bound sac used to store and protect materials that are transported in the cell

The image below shows a Golgi body with the vesicle’s labeled.

These vesicles are basically just little stacks that contain the finished product, and will move it or transport it from the Golgi apparatus, through the cytoplasm, to wherever it needs to go in the cell.

The vesicle will have a specific location that it will have to go to in the cell. That location will be determined by enzymes, or different tag molecules, that are added to that vesicle. These tag molecules tell that vesicle where it needs to go within the cell.

Some vesicles are used to transport different molecules throughout the cell, but other types of vesicles can contain enzymes that will help to break substances down within the cell.

Another type of vesicle you might be familiar with within a cell would be a lysosomes. Enzymes contained in the lysosome will help break down materials in the cell. It will help break down old cell parts, bacteria, anything that the cell does not want to have within it can be broken down by lysosomes.

Big Idea

Vesicles are used to either transport substances, or sometimes to break down substances within the cell.


Summary

This lesson has been an overview of the function and structure of a Golgi body in eukaryotic cells.

Keep up the learning and have a great day!

Source: THIS WORK IS ADAPTED FROM SOPHIA AUTHOR AMANDA SODERLIND

TERMS TO KNOW
  • Golgi Body

    A Cell organelle that packages lipids and proteins to be transported out of the cell

  • Vesicle

    A membrane bound sac used to store and protect materials that are transported in the cell

  • Endomembrane System

    The system of organelles responsible for synthesizing, packaging, and transporting proteins and lipids