Chapter 1 Introduction

Content of this chapter

Outline

1.About Cell Biology

2.Look briefly at the history of cell theory

3.Why are cells the basic units of life?

     A.The cell is the structural unit of life, All organisms is make up of cells
     B.The cell is the functional unit of organisms. All metabolic activity is based on cells
     C.The cell is the foundation of reproduce, and the bridge of inheritance
     D.The cell is the growing and developing basis of life
     E.Cell (nucleus) is totipotent, which can create a new organism of the same type

4.Basic properties of cells

    A.Cells are highly complex and organized, capable of self-regulation;Cells acquire and utilize energy.     
     B.All cells share similar structure,composition and metabolic features
     C.Cells can capable of producing more of themselves, even grow and reproduce in culture for extended periods
     D.Cells are able to respond to stimuli via surface receptors that sense changes in the chemical environment

5.The Size of Cells

6.Two fundamentally different classes of cells:

   Prokaryotes and eukaryotes

     A.Prokaryotic and eukaryotic cells are distinguished by the size and the types of internal structures, or organelles, especially if there is nuclear envelope
     B.Characteristics that distinguish prokaryotic and eukaryotic cells
     C.Three structural systems in Eukaryotes

7.Types of Prokaryotic Cells: Two Subkingdoms

8.Viruses

     A.Viruses are pathogens first described in the late 1800s
     B.Viral structure
     C.Viral infection types
     D.Viral origins