the movement of water from in a cell to outside it or from outside the cell to inside it. The 0% salt concentration and the 5% salt concentration showed a mass increase because there was a higher water concentration outside of the potato cells than inside them. To solve this the potato cells experience osmosis to balance the concentration of water in the cell and outside it. Since there is a higher water concentration outside the cell the water must move into the cell to balance the water concentration
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functioning of organs. Embryonic stem cells (ES cells) which are stem cells that are derived from the embryo and are capable of creating other cell types in the human body can assist the affected individuals maintain homeostasis in their bodies. Parents have the right to agree to the use embryonic stem cells as it will ensure wellbeing of the new born baby. However there are moral‚ ethical and religious matters which lead to people being against the use of ES cells. The state of “homeostasis” is the
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multiple diseases? With stem cell research there can be a cure for today’s incurable illness. The debate for and against stem cells and research on them‚ has been around since stem cells were discovered. Is it ethical to end the possibility of one’s life to save another? When discussing stem cell research one must discuss what stem cell research contains‚ how they work‚ potential therapy‚ and the many misconceptions that come along with this controversial topic. Is stem cell research ethical? One must
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Prokaryotic vs. Eukaryotic cells have similarities and differences. They can be found in different places. They have different ways of functioning and can be made up of different things. But just how they are very different they have some similarities that can in a way unite them and make them a part of the of a cell family. With their differences and similarities‚ they’re just here for one solemnly purpose‚ to serve whatever type of organism they are present in. A Prokaryotic cell does not have a nucleus
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stem cell research? The capability to revert blindness‚ cure diabetes‚ let paralyzed people walk again‚ replace deficient organs with newly grown ones and cure blood diseases are a few of the many potential functions of stem cells. A stem cell is an unspecialized cell that can develop into many different cell types in the body during early life and growth it also has the ability to divide essentially without limit. Unlike mature cells‚ which permanently have the same function‚ stem cells can both
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phenomenon or things happen. They just accept it without knowing the cause of it. And there is no meaning in it if we just accept things without reasons. That’s why this experiment is conducted so that we may know how things happen in the level of cells. Objectives: 1. To demonstrate the principle of Osmosis and to apply it with actual life situations. Materials and Methods: • Materials: Compound microscope Glass Slide Cover Slip Tissue Paper Blade Rhoeo discolor Leaves
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Sepulveda Bio. Anthro. Tues 6-9 Cell Replacement and Stem Cell Therapy to Treat Neurodegenerative Disease Stem cell therapy is being used to treat neurodegenerative diseases such as amyotrophic lateral sclerosis or ALS‚ commonly referred to as Lou Gehrig’s disease. The disease itself‚ new therapies and treatments‚ along with a cure are currently being studied by universities and stem cell researchers. ALS is a progressive neurodegenerative disease which attacks the neurons in the brain and
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purpose of the investigation is to determine the time an onion cell spends in each part of the cell cycle. B. The significance of this investigation is to help us understand and know how long cells are undergoing mitosis. My personal interest is to know the phases of mitosis in cells in order to someday help find cures for cancer. C. The cell cycle is a chronological set of events‚ culminating in cell growth and division into two daughter cells. Some of the reasons why mitosis occurs include growth‚ tissue
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Eukaryotic Cells Worksheet Provide a list describing at least three differences between prokaryotic and eukaryotic cells: 1. Number of cells – prokaryotic cells is single celled while eukaryotic cells can be single or multi celled. 2. The size of the cells – prokaryotic cells are really extremely tiny while eukaryotic cells are just extremely tiny. 3. The DNA structure – prokaryotic cells are a single circular chromosome attached to the cell wall while eukaryotic cells are linear
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1. What are the different restriction points of the cell cycle? Describe each. G1 (Restriction) Checkpoint * End of G1‚ just before onset of the S phase (DNA replication) * Yeast “start”; other eukaryotes “restriction point” * The options for the cell at this point: * divide‚ delay division‚ or exit the cell cycle * Cells can exit the cell cycle at this point into an arrested stage (G0) * When this checkpoint is passed‚ cdk4 and cyclin D
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