Historical Development of the Cell Theory Essay Example
Biology Notes
1. Organisms are made of cells that have similar structural characteristics. 1 Outline the historical development of the cell theory, in particular the contributions of Robert Hooke and Robert Brown. The development of the cell theory starts in the 1600ʼs with Robert Hookeʼs discovery of cells when viewing a piece of cork under a microscope and describing them as a nun house. Anton van Leeuwenhoek was crucial in the development of microscopes making simple microscopes through advanced lens making techniques that enabled him to see 300X and also discovered bacteria. Robert Brown later in the 1900ʼs made the discovery of the cell nucleus. 2 Describe evidence to support the cell theory. 1. All living organisms are composed of one or more cells - Even in the smallest life form there is at least one cell 2. Cells are the basic building block of life 3. All cells are derived from pre-existing cells - through the process of meiosis and mitosis 4. In a multicellular organism, the activity of the entire organism depends on the total activity of its independent cells 3 Significance of technological advances to developments in the cell theory Assess the impact of technology including the development of the microscope on the development of the cell theory The development of cell theory has been heavily impacted by the improvement of technology. The improvement has allowed us from first only seeing a big group of cells to being able to now see to a scale so small we can see in and around a single cell. This has allowed us to observe cells with more detail than ever before and allow us to more accurately determine what cells have what purpose and many other uses. The cell theory states: • All living things or organisms are made of cells and their products. • New cells are created by old cells dividing into two. • Cells are the basic building units of life. The development of the microscope was vital for all 3 points. Without the invention and founding of compound
1. Organisms are made of cells that have similar structural characteristics. 1 Outline the historical development of the cell theory, in particular the contributions of Robert Hooke and Robert Brown. The development of the cell theory starts in the 1600ʼs with Robert Hookeʼs discovery of cells when viewing a piece of cork under a microscope and describing them as a nun house. Anton van Leeuwenhoek was crucial in the development of microscopes making simple microscopes through advanced lens making techniques that enabled him to see 300X and also discovered bacteria. Robert Brown later in the 1900ʼs made the discovery of the cell nucleus. 2 Describe evidence to support the cell theory. 1. All living organisms are composed of one or more cells - Even in the smallest life form there is at least one cell 2. Cells are the basic building block of life 3. All cells are derived from pre-existing cells - through the process of meiosis and mitosis 4. In a multicellular organism, the activity of the entire organism depends on the total activity of its independent cells 3 Significance of technological advances to developments in the cell theory Assess the impact of technology including the development of the microscope on the development of the cell theory The development of cell theory has been heavily impacted by the improvement of technology. The improvement has allowed us from first only seeing a big group of cells to being able to now see to a scale so small we can see in and around a single cell. This has allowed us to observe cells with more detail than ever before and allow us to more accurately determine what cells have what purpose and many other uses. The cell theory states: • All living things or organisms are made of cells and their products. • New cells are created by old cells dividing into two. • Cells are the basic building units of life. The development of the microscope was vital for all 3 points. Without the invention and founding of compound