Search results
Mitosis is a step in this cycle- the stage when the cell divides. Stage 1 (Interphase): In this stage the cell grows, organelles (such as ribosome and mitochondria) grow and increase in number, the synthesis of proteins occurs, DNA is replicated (forming the characteristic ‘X’ shape) and energy stores are increased.
Part One: The Nature of Science. There are three elements in defining science: 1) the values of science, 2) science as a profession, and 3) the product of science—scientific knowledge. Using this definition, the goal of Part One is to introduce the fundamental nature of the scientific enterprise. Major Units:
- 393KB
- 72
- 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...
- 2MB
- 8
Mar 14, 2022 · This is a collection of free biology worksheets, notes, handouts, slides, study guides and quizzes. Most content targets high school, AP biology, genetics, anatomy/physiology, immunology, and biology 101 and 102 in college. There is also biochemistry and physics for biologists. However, some resources are at the grade school and middle school ...
Oct 31, 2023 · Biology is a natural science concerned with the study of life and living organisms. Modern biology is a vast and eclectic field composed of many specialized disciplines that study the structure, function, growth, distribution, evolution, or other features of living organisms. However, despite the broad scope of biology, there are certain ...
Departing from traditional textbooks, XBio presents biology as detective work; a bold search for knowledge, and not just its memorization. XBio is a collaboration between and. This program was supported in part by a grant to iBiology from the Howard Hughes Medical Institute. The Bio-Dictionary helps you to understand common terms in biology.
Biology is a science, but what exactly is science? What does the study of biology share with other scientific disciplines? We can define science (from the Latin scientia , meaning “knowledge”) as knowledge that covers general truths or the operation of general laws, especially when acquired and tested by the scientific method.
