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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.
The crinoid Leptometra phalangium (Müller, 1841) forms dense beds (30 individuals m −2, 5.3 ± 3.2 individuals m −2) that cover vast extensions on continental shelfs and shelf edge environments (90–250 m depth) ( Fig. 6.5 C and D) ( Grinyó et al., 2018 ). Leptometra phalangium beds have been associated with elevated densities of ...
- 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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concept does not incorporate active transport mechanisms. Genes to Proteins The genes (DNA) of every organism code for and contain information needed for the synthesis of proteins (enzymes and structural proteins). The genes that are expressed in a cell determine the structure and functions of that cell. This is the central dogma of molecular ...
Science (from the Latin scientia, meaning “knowledge”) can be defined as knowledge about the natural world. Science is a very specific way of learning, or knowing, about the world. The history of the past 500 years demonstrates that science is a very powerful way of knowing about the world; it is largely responsible for the technological ...
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Chapter 1: The Science of Biology. In this chapter, you will review the definition of biology and the characteristics of living things. You will also learn how the study of science leads to an understanding of the natural world and see how science is done in the real-life. Finally, this chapter covers the themes that unify all of the concepts ...
