Week 2: Cell Structure and Function

This week, we will explore the fundamental unit of life - the cell. We will delve into the intricate structures within cells and understand how these structures contribute to various cellular functions that sustain life.

Cell Theory

The cell theory is a fundamental principle in biology that states:

• All living organisms are composed of one or more cells.
• The cell is the basic unit of structure and function in living organisms.
• All cells arise from pre-existing cells through cell division.

Prokaryotic and Eukaryotic Cells

Cells can be classified into two main categories based on their structural complexity:

1. Prokaryotic Cells

   Prokaryotic cells are relatively simple and lack a true nucleus and membrane-bound organelles. Examples include bacteria and archaea.

2. Eukaryotic Cells

   Eukaryotic cells are more complex, with a membrane-bound nucleus and various organelles. Examples include plant and animal cells.

Cell Structures and Functions

In this section, we will explore the various structures found within eukaryotic cells and their respective functions.