Page 42 - General and Inorganic Chemistry for Advanced Secondary Schools Students Book Form Five and Six

Biology for Secondary Schools

Chapter Three

Cell structure and
Cell structure and
FOR ONLINE READING ONLY

organization
organization

Introduction

All living things are made up of cells. The cell is the basic functional unit of life.

In this chapter, you will learn about the meaning of the cell, characteristics of
the cell, and the functions of different parts of animal and plant cells. You will
also learn the similarities and differences between plant and animal cells. In

addition, you will learn the concept of cell differentiation and its importance to
the formation of tissues, organs, and organ systems. The competencies developed
will enable you to learn better other biological processes.

microscope and examining cork from

a tree’s bark. He discovered that the
Think
cork consisted of numerous box-like
Life without cells
structures that are closely packed
together, resembling a honeycomb.
The cell These structures were named ‘cells’.

Task 3.1 Since then, it has been revealed that

Search from library and reliable internet living things are made up of one or
sources the information about cell. more cells, which serve as fundamental
units of life. All essential life processes
occur within the cell.
In 1665, an English scientist
Robert Hooke revolutionized our The remarkable observations and
understanding of life by designing a
conclusions made by Hooke, along

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