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I. Introduction

All organisms in life are composed of at least one or more

cells. Cells are the basic units of life. There are three main

features of a cell. First, all organisms consist of one or more

cells. Second, cells are the smallest units of life and third,

cells arise only from preexisting cells. These three facts are

referred to as the cell theory.

All cells can be categorized into two basic cell types.

They are prokaryotic and eukaryotic. To distinguish where cells

are placed in the two categories, what is inside the cell must

first be looked at. Every cell, either prokaryotic or eukaryotic

all contain basic cell parts. They are: a plasma membrane,

cytoplasm, DNA (the genetic material), and ribosomes.

Prokaryotic cells have a simple structure and they are usually

smaller than eukaryotic cells. Also, most prokaryotic cells

contain a cell wall. In addition to having the basic cell parts,

eukaryotic cells......

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Approximate Word Count: 1527
Approximate Pages: 7 (250 words per double-spaced page)

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