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cell theory. The cell theory is a widely accepted explanation of the relationship between cells and living things. The cell theory states: • All living things or organisms are made of cells. • New cells are created by old cells dividing into two. • Cells are the basic building units of life.
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- 1.1 Motivation
- How do cells maintain their shape?
- How do cells move?
- How do cells transport material?
- How do cells interact with their environment?
- 1.3 Introduction to biopolymers
- 1.5 Introduction to biomembranes
Why is the understanding of cell mechancis important? cells need to move and interact with their environment cells have components that are highly dependent on mechanics, e.g., structural proteins cells need to reproduce / divide to improve the control/function of cells to improve cell growth/cell production medical appli-cations mechanical signals...
What are the mechanical properties of the individual components that give the cell it’s strength and elasticity? What are their stability limits?
What are the structural components that support cellular motion? How is motion gen-erated according to Newton’s laws which teaches us that cells need to adhere to push themselves forward?
What are the mechanisms by which proteins are transported from their production site to their working site?
What are the cell’s mechanisms to sense environmental changes and respond to them?
A typical finding is that other than most engineering materials like steel or concrete, cells are extremely soft, almost liquid like. Their mechanical behavior and their mi-crostructure resemble those of rubber. Rubber consists of a network of polymeric chains that become more resistant to deformation when heated. This is somewhat counterintuitive ...
All cellular components are contained within a cell membrane the mechanical proper-ties of which we will explore throughout this class. The cell membrane is extremely thin, approximately 4-5nm, and flexible, which allows the cell to easily adjust its shape in response to environmental changes. Just think of red blood cells which have to be squeezed...
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Today, the cell theory, which states that all organ-isms are made up of basic living units called cells and that cells come only from preexisting cells, is a basic theory of biology. The cell theory states the following: All organisms are composed of one or more cells. Cells are the basic living unit of structure and function in organisms.
OpenStax. Learning Objectives. Explain the key points of cell theory and the individual contributions of Hooke, Schleiden, Schwann, Remak, and Virchow. Explain the key points of endosymbiotic theory and cite the evidence that supports this concept.
Oct 31, 2023 · Key Points. The cell theory describes the basic properties of all cells. The three scientists that contributed to the development of cell theory are Matthias Schleiden, Theodor Schwann, and Rudolf Virchow. A component of the cell theory is that all living things are composed of one or more cells.
Cell Theory • Cells the building blocks of all organisms • “There is one universal principle of development for the elementary parts, of organisms, however different, and this principle is the formation of cells” • “Each cell is, within certain limits, an Individual, an independent Whole. The vital phenomena of one are
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2.1. Cell theory. 2.2. The theory of organisms. 2.3. Cell size. 3. The diversity of life. 3.1. Origin of the first cell. 3.2. The endosymbiont hypothesis. 4. Cellular diversity. 4.1. Plant tissue diversity. 4.1.1. Dermal tissue. 4.1.2. Vascular tissue. 4.1.3. Ground tissue. 4.2. Animal tissue diversity. 4.2.1. Epithelial tissue.
