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1. Animal and Plant Cells
1. Animal and Plant Cells

... What is a cell wall? All plant cells have a cell wall – a rigid layer that surrounds the cell membrane. The plant cell wall is made from cellulose, a carbohydrate polymer. The purpose of the cell wall is to:  maintain the shape and structure of the cell  protect the cell’s contents from pathogens ...
2011  CLASS-X BIOLOGY SHORT ANSWER TYPE QUESTIONS-LIFE PROCESSES
2011 CLASS-X BIOLOGY SHORT ANSWER TYPE QUESTIONS-LIFE PROCESSES

... 28.Name the site of anaerobic and aerobic respiration in a cell. 29.A three carbon compound is the common product of both aerobic and anaerobic pathway. What is that? 30.Why do we get muscle cramp after vigorous exercise? 31.Distinguish between lactic acid and alcoholic fermentation? 32.Name the ene ...
Using the Rapid Chill Surgical Technique to Examine a Live
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... Students will break up into lab groups of three to four using the rapid chill technique described in the accompanying article to prepare a goldfish for close examination under a video microscope. Each group will be given a live goldfish, chopped ice, spring water, a thermometer, and a spoon. They wi ...
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... 1- Starting from the text and from the document 1; indicate if Salmonella is resistant to penicillin or not. Another bacterium called v. cholera is cultured in two different media, the first medium (C) contains penicillin and the other medium (D) contains another antibiotic called ampicillin. The mu ...
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... Aim: How is the human skeletal system organized? ...
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... numerous human diseases (inflammatory bowel diseases (IBD), allergic reactions, diarrhea, asthma, low grade metabolic inflammation, etc.), furthermore it is used as an indicator of well being in farmed fish. Permeability, the flow of substances across a porous wall, in the intestine can mainly be di ...
Topic - CarstensenPortfolio
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... • VIRUS means poison; much smaller than bacteria, can’t even be “filtered” out of a liquid like bacteria can be. • Viruses have genetic material inside of a protective protein coat called a CAPSID. • They come in many shapes & sizes, but all have a CAPSID and GENETIC MATERIAL. • VIRUSES must use a h ...
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... Ask students to discuss in groups what is included in the circulatory and respiratory system in the human body. Take feedback. Discuss with students what is included and the main functions of the circulatory system showing the model of human body circulatory system Explain the composition of blood i ...
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... - they consume other organism for food - Some are parasites; they get their nutrients from other organisms, which are hosts. Parasites: an organism that benefits by living in or on organisms at the expense of that organism. Pseudopod: (pseudopodia) a temporary cytoplasmic extensions that amoeba use ...
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Photosensitizing activity of water- and lipid
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"pdf" copy of Topic 6, The Plant Cell

... I. The Elodea leaf cell: a photosynthetic factory. Procedure: Make a wet mount of a leaf of Elodea. Plants are at your bench and you simply need to pluck a leaf off the shoot. Observe the leaf with your scanning objective (40x total magnification). Even at low power, it will be obvious that most of ...
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... 26. What does the liver store? nutrients 27. The part of the digestive system through which food passes is the digestive tract. 28. What are the two kinds of digestion? mechanical and chemical 29. Which of the following is NOT part of the digestive tract? liver 30. What are you doing when your diaph ...
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... In most cases, these deaths occur by apoptosis: the cells shrink, condense, and frequently fragment, and neighboring cells or macrophages rapidly phagocytose the cells or fragments before there is any leakage of cytoplasmic contents. Apoptosis is mediated by proteolytic enzymes called caspases, whic ...
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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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