internal skeleton skill around brain and vertebra around spinal cord and dorsal nerve cord. 2. What are the four levels of organization in vertebrate bodies? Cells‚ tissues‚ organs‚ organ systems. 3. What are tissues? Groups of cells similar in structure and function are organized into tissues. What are the four primary tissues in adult vertebrates? Epithelial‚ connective‚ muscle‚ nerve.
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John’s ship finally arrived in New York and he was exhausted. He and his family traveled to America because of the potato famine that was happening back home in Ireland. The first task he needed to do was find a place to live at with his family; he realized that the decent houses and apartments were out of his budget. He only had money for the crowded and unhygienic apartments‚ if they could be called that. After John picked a “room” out‚ he went to search for jobs. While he was out looking for work
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Potatoes taste pretty good. Mashed‚ fried‚ baked‚ or scalloped‚ but how about taking the place of a car battery? If a potato can replace a AA battery and light up a light bulb‚ who’s to say multiple potatoes couldn’t serve the same purpose in a car? Potatoes use the acids within them to start a reaction between the copper and zinc wires on either side of it. This reaction causes the flow of electrons passing through the wires and using the positive and negatively charged electrons to power the
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Testosterone is the primary male sex hormone. In men‚ testosterone is essential in the development of male reproductive tissues such as the testis and prostate‚ as well as promoting secondary sexual characteristics including increased muscle‚ bone mass and the growth of body hair. Low levels of testosterone can produce several different signs and symptoms. For instance‚ testosterone is most commonly associated with an individual’s sex drive. Individuals with low testosterone‚ however‚ will typically
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The Effect of Salt Concentration on Osmosis in Potato Cells We should first explain what Osmosis is. It’s a passage of water from a region of high water concentration through membrane to a region of low water. Semi membrane is a very thin layer of material‚ which allows some things to pass through them but prevent other things from passing through. The cells allow small molecules like Oxygen‚ water‚ Carbon Dioxide‚ Ammonia. But will not allow larger molecules like Sucrose‚ Starch‚ or protein‚ etc
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Impressionism and Post-Impressionism Analysis of “The Potato Eaters” by Vincent Van Gogh In 1883‚ after leaving his wife Sien and his children Vincent Van Gogh headed to Nuenen. Coming off a disturbing part of his life‚ which included the break up with his ex-wife with several issues and suffering from gonorrhea‚ he was having a considerably difficult time. In Nuenen‚ Van Gogh started to devote himself to drawing‚ and started to gain attachment and sympathy
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The Invention of the White Race‚ Volume I by Theodore w. Allen Theodore William Allen was an independent writer‚ working intellectual and activist. He is known for his works that contributed a great deal in theory that is critical of race and the origins of it. He wrote a lot on concepts of racism and the special privileges of the white people. His vast interest in racial segregation‚ which derives from a made up concept is what perhaps‚ pioneered this work on “The Invention of the white Race”.
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was a comparison between accuracy and precision of densities measured by volume. Mass measurements are often used units in the metric system. Volume can be examined a borrowed unit. The volume measurements were made in mL. Every measurement had a level of hesitancy affiliated with it. The experiment could feel uncertain from the object used for measurement and from the accuracy of the person doing the measuring of the volume. Because of this uncertainty‚ the experiment must be repeated for better
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In Parts A and C‚ the relationship between surface area and volume was investigated. Plasticine was formed into a cube and a sphere; both shapes were cut in half. It was found that plasticine volume should not vary‚ two halves have a greater surface area than a whole‚ and cubes have a greater surface area than spheres of the same volume. In Part B‚ the relationship between diffusion and surface area to volume ratio was investigated. Three agar-phenolphthalein-sodium hydroxide cubes of different sizes
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Surface area / Volume ratio Experiment Introduction: The surface area to volume ratio in living organisms is very important. Nutrients and oxygen need to diffuse through the cell membrane and into the cells. Most cells are no longer than 1mm in diameter because small cells enable nutrients and oxygen to diffuse into the cell quickly and allow waste to diffuse out of the cell quickly. If the cells were any bigger than this then it would take too long for the nutrients and oxygen to diffuse into
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