Diffusion - Net Texts
... How do marine animals keep their cells from shrinking? How do you keep your blood cells from bursting? Both of these questions have to do with the cell membrane and osmosis. Marine animals live in salt water, which is a hypertonic environment; there is more salt in the water than in their cells. To ...
... How do marine animals keep their cells from shrinking? How do you keep your blood cells from bursting? Both of these questions have to do with the cell membrane and osmosis. Marine animals live in salt water, which is a hypertonic environment; there is more salt in the water than in their cells. To ...
Cell Transport
... Concept Check Explain the term concentration gradient. ____________________________________ _______________________________________________________________________ How does it affect the movement of a molecule? _____________________________ ...
... Concept Check Explain the term concentration gradient. ____________________________________ _______________________________________________________________________ How does it affect the movement of a molecule? _____________________________ ...
Mitosis Phases only
... Chromatid arms separate and move to opposite ends of the cell _______________ TELOPHASE Chromosomes unwind into chromatin & nucleus returns PROPHASE _______________ Nuclear membrane & nucleolus disappear ...
... Chromatid arms separate and move to opposite ends of the cell _______________ TELOPHASE Chromosomes unwind into chromatin & nucleus returns PROPHASE _______________ Nuclear membrane & nucleolus disappear ...
How do you think materials move in and out of the cell?
... permeability: allows some materials to pass through membrane while rejecting others. ...
... permeability: allows some materials to pass through membrane while rejecting others. ...
Cell Transport
... moved from an area of high concentration, outside the cell, to an area of low concentration inside the cell in order to try to reach equilibrium. The large molecules of starch were not able to diffuse and reach equilibrium because they were too large to pass through the semi-permeable membrane. ...
... moved from an area of high concentration, outside the cell, to an area of low concentration inside the cell in order to try to reach equilibrium. The large molecules of starch were not able to diffuse and reach equilibrium because they were too large to pass through the semi-permeable membrane. ...
Prentice Hall Biology
... The photosynthesis reactions can be broken down into two components: 1. The light-dependent reactions (the "light" reactions) - occur on the thylakoid membranes ...
... The photosynthesis reactions can be broken down into two components: 1. The light-dependent reactions (the "light" reactions) - occur on the thylakoid membranes ...
transport proteins
... • Some proteins can move solutes against their concentration gradient, from the side where they are less concentrated to the side where they are ...
... • Some proteins can move solutes against their concentration gradient, from the side where they are less concentrated to the side where they are ...
Universidad de Chile Programa Académico de Bachillerato - U
... ciliasinuous, whiplike appendages that beat continually; its front end is flattened except for a single protrusion, rather like a snout. (B) Didinium normally swims around in the water at high speed by means of the synchronous beating of its cilia. When it encounters a suitable prey, usually another ...
... ciliasinuous, whiplike appendages that beat continually; its front end is flattened except for a single protrusion, rather like a snout. (B) Didinium normally swims around in the water at high speed by means of the synchronous beating of its cilia. When it encounters a suitable prey, usually another ...
File - Ms. D. Science CGPA
... Cell- The basic unit of structure and function in living things. Cell Membrane- A thin, flexible barrier that forms around a cell and controls which substances pass into an out of a cell. Nucleus- A large organelle that contains the cell’s genetic material in the form of DNA and controls many of the ...
... Cell- The basic unit of structure and function in living things. Cell Membrane- A thin, flexible barrier that forms around a cell and controls which substances pass into an out of a cell. Nucleus- A large organelle that contains the cell’s genetic material in the form of DNA and controls many of the ...
Passive Transport Passive Transport
... In an aqueous solution -water is the solvent -dissolved substances are the solutes Osmosis is the movement of water from an area of high to low concentration of water -movement of water toward an area of high solute concentration ...
... In an aqueous solution -water is the solvent -dissolved substances are the solutes Osmosis is the movement of water from an area of high to low concentration of water -movement of water toward an area of high solute concentration ...
Lecture12Terminal
... 7. How do galectins achieve high-affinity binding to cell surface glycans? 8. How do you explain the finding that galectins are not routinely found in large amounts in body fluids, even though they are soluble secreted proteins? 9. Explain how a galectin could act as a receptor for microbial infecti ...
... 7. How do galectins achieve high-affinity binding to cell surface glycans? 8. How do you explain the finding that galectins are not routinely found in large amounts in body fluids, even though they are soluble secreted proteins? 9. Explain how a galectin could act as a receptor for microbial infecti ...
chapter07
... environment), software (instructions for how to carry out different jobs), CPU (directs the computer's activities), recycle bin or trash can (storage area for wastes), and so on. 2. How do the functions of these computer parts correspond to the functions of certain cell parts? Students should try to ...
... environment), software (instructions for how to carry out different jobs), CPU (directs the computer's activities), recycle bin or trash can (storage area for wastes), and so on. 2. How do the functions of these computer parts correspond to the functions of certain cell parts? Students should try to ...
Cells
... Functions Rigid structure; protects cell Maintains shape of cells Prevents excess water uptake ...
... Functions Rigid structure; protects cell Maintains shape of cells Prevents excess water uptake ...
Neuronal cell biology, polarity, subcellular specializatio…
... the tiny volume of spines, only small fluxes of ions through a few channels can drastically alter intracellular concentration within the spine. Dendritic filopodia are widely believed to be the precursors of dendritic spines—filopodia more abundant during early development, more motile, frequently ...
... the tiny volume of spines, only small fluxes of ions through a few channels can drastically alter intracellular concentration within the spine. Dendritic filopodia are widely believed to be the precursors of dendritic spines—filopodia more abundant during early development, more motile, frequently ...
Cell Discovery and Theory
... The cell theory grew out of the work of many scientists and improvements in the microscope. • Many scientists contributed to the cell theory. • More was learned about cells as microscopes improved. • The cell theory is a unifying concept of biology. ...
... The cell theory grew out of the work of many scientists and improvements in the microscope. • Many scientists contributed to the cell theory. • More was learned about cells as microscopes improved. • The cell theory is a unifying concept of biology. ...
Reece9e_Lecture_C06
... Many of the internal membranes in a eukaryotic cell are part of the endomembrane system, which includes the nuclear envelope, endoplasmic reticulum, Golgi apparatus, lysosomes, vesicles, vacuoles, and plasma membrane. The tasks of the endomembrane system include synthesis of proteins and their trans ...
... Many of the internal membranes in a eukaryotic cell are part of the endomembrane system, which includes the nuclear envelope, endoplasmic reticulum, Golgi apparatus, lysosomes, vesicles, vacuoles, and plasma membrane. The tasks of the endomembrane system include synthesis of proteins and their trans ...
Prokaryotes vs. Eukaryotes
... • Lipid portion known as lipid A – Released from dead cells when cell wall disintegrates – May trigger fever, vasodilation, inflammation, shock, and blood clotting – Can be released when antimicrobial drugs kill bacteria ...
... • Lipid portion known as lipid A – Released from dead cells when cell wall disintegrates – May trigger fever, vasodilation, inflammation, shock, and blood clotting – Can be released when antimicrobial drugs kill bacteria ...
Extracellular matrix
In biology, the extracellular matrix (ECM) is a collection of extracellular molecules secreted by cells that provides structural and biochemical support to the surrounding cells. Because multicellularity evolved independently in different multicellular lineages, the composition of ECM varies between multicellular structures; however, cell adhesion, cell-to-cell communication and differentiation are common functions of the ECM.The animal extracellular matrix includes the interstitial matrix and the basement membrane. Interstitial matrix is present between various animal cells (i.e., in the intercellular spaces). Gels of polysaccharides and fibrous proteins fill the interstitial space and act as a compression buffer against the stress placed on the ECM. Basement membranes are sheet-like depositions of ECM on which various epithelial cells rest.The plant ECM includes cell wall components, like cellulose, in addition to more complex signaling molecules. Some single-celled organisms adopt multicelluar biofilms in which the cells are embedded in an ECM composed primarily of extracellular polymeric substances (EPS).