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cell junction
cell junction

... • They prevent the passage of molecules and ions through the space between cells. • So materials must actually enter the cells (by diffusion or active transport) in order to pass through the tissue. • This pathway provides control over what substances are allowed through. • They block the movement o ...
ANIMAL TRANSPORT
ANIMAL TRANSPORT

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Biology Agenda 8/23 – 8/27

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Maintenance of marine heterotrophic flagellate
Maintenance of marine heterotrophic flagellate

... Addition of a surface sterilised, previously dry, grain ensures a slow release of carbon/nutrients into the medium, thus ensuring steady growth of “food” bacteria. If possible grains that have not been treated with any pesticides etc. should be used. Choice of grain does not appear to be crucial and ...
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... Cell walls maintain the cell’s shape, the direction of growth, and provide structural support. Not all living things have cell walls. Plant cells have a lot of chemicals added into their cell walls such as cellulose and lignin (for plant structure). The cell wall is located outside the plasma membra ...
SULIT 4551/2 BIOLOGY/ P KERTAS 2 Sept 2011 2 ½ JAM BIOLOGY
SULIT 4551/2 BIOLOGY/ P KERTAS 2 Sept 2011 2 ½ JAM BIOLOGY

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background slides

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Outline for Cell structure and membranes

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Optical trapping and surgery of living yeast cells using a single laser
Optical trapping and surgery of living yeast cells using a single laser

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Icd 10 renal cell carcinoma metastatic

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Energy in the Cell

... specialized in structure and • Embryonic stem cell function into a wide variety of research is very cell types. controversial because the • In early embryonic development, cells are taken from a stem cells produce every type of ...
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Cell Transport.ppt - High School of Commerce
Cell Transport.ppt - High School of Commerce

... •A protist like paramecium has contractile vacuoles that collect water flowing in and pump it out to prevent them from over-expanding. •Salt water fish pump salt out of their specialized gills so ...
Cell Transport Powerpoint presentation
Cell Transport Powerpoint presentation

... •A protist like paramecium has contractile vacuoles that collect water flowing in and pump it out to prevent them from over-expanding. •Salt water fish pump salt out of their specialized gills so ...
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... o Movement from high to lower concentration areas o Examples include simple diffusion; osmosis and facilitated diffusion o Facilitated diffusion requires a protein carrier or channel Active transport o Energy in the form of ATP is required o Movement from low to high areas of concentration o Example ...
Cell Transport Powerpoint presentation
Cell Transport Powerpoint presentation

... •A protist like paramecium has contractile vacuoles that collect water flowing in and pump it out to prevent them from over-expanding. •Salt water fish pump salt out of their specialized gills so ...
factors affecting growth of plant tissue
factors affecting growth of plant tissue

... Morphogenesis is the biological process that causes an organism to develop its shape. The process controls the organized spatial distribution of cells during the embryonic development of an organism. Morphogenesis can take place also in a mature organism, in cell culture or inside tumor cell masses. ...
Cell Transport
Cell Transport

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Passive Transport
Passive Transport

... •A protist like paramecium has contractile vacuoles that collect water flowing in and pump it out to prevent them from over-expanding. •Salt water fish pump salt out of their specialized gills so ...
Cell Transport Notes 2010
Cell Transport Notes 2010

... •A protist like paramecium has contractile vacuoles that collect water flowing in and pump it out to prevent them from over-expanding. •Salt water fish pump salt out of their specialized gills so ...
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University of Dublin TRINITY COLLEGE The Moyne Institute of

... The Hinton lab aims to discover new aspects of the infection biology, gene regulation and physiology of the bacterial pathogen Salmonella, utilising a combination of classical microbiology, biochemistry, cell biology and functional genomic techniques. We are addressing the following questions: How d ...
Chapter 40 Presentation
Chapter 40 Presentation

... within the cytoplasm of these cells.  Myofibrils are made of actin and mysosin.  Vertebrates have 3 types of muscle: skeletal, cardiac, and smooth. ...
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Organ-on-a-chip

An organ-on-a-chip (OC) is a multi-channel 3-D microfluidic cell culture chip that simulates the activities, mechanics and physiological response of entire organs and organ systems. It constitutes the subject matter of significant biomedical engineering research, more precisely in bio-MEMS. The convergence of labs-on-chips (LOCs) and cell biology has permitted the study of human physiology in an organ-specific context, introducing a novel model of in vitro multicellular human organisms. One day, they will perhaps abolish the need for animals in drug development and toxin testing.Although multiple publications claim to have translated organ functions onto this interface, the movement towards this microfluidic application is still in its infancy. Organs-on-chips will vary in design and approach between different researchers. As such, validation and optimization of these systems will likely be a long process. Organs that have been simulated by microfluidic devices include the heart, the lung, kidney, artery, bone, cartilage, skin and more.Nevertheless, building valid artificial organs requires not only a precise cellular manipulation, but a detailed understanding of the human body’s fundamental intricate response to any event. A common concern with organs-on-chips lies in the isolation of organs during testing. ""If you don’t use as close to the total physiological system that you can, you’re likely to run into troubles"" says William Haseltine, founder of Rockville, Maryland. Microfabrication, microelectronics and microfluidics offer the prospect of modeling sophisticated in vitro physiological responses under accurately simulated conditions.
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