As we delve into the fascinating world of biology, it’s essential to understand the fundamental building blocks of life: cells. In this article, we’ll explore the key concepts and notes from Form 4 Biology Chapter 7, covering cell biology and related topics.

Cell biology is the study of cells, which are the basic structural and functional units of living organisms. Cells are often referred to as the “building blocks of life” because they are the smallest units that can maintain life and reproduce. There are two main types of cells: prokaryotic cells and eukaryotic cells.

Eukaryotic cells, on the other hand, are more complex cells that have a true nucleus and other membrane-bound organelles. They are typically larger than prokaryotic cells, ranging from 10 to 100 micrometers in size, and are found in plants, animals, fungi, and protists. Eukaryotic cells have a more complex structure, with a nucleus that contains multiple linear DNA molecules.

Prokaryotic cells are simple cells that lack a true nucleus and other membrane-bound organelles. They are typically small, ranging from 0.5 to 5.0 micrometers in size, and are found in bacteria and archaea. Prokaryotic cells have a single circular DNA molecule that floats freely within the cell.