Christine Otieno Estimating Osmolarity of plant Cells(potato and celery)by percentage change in weight Using different sucrose concentrations Introduction The purpose of this experiment was to estimate Osmolality of plants cells i.e. Potato and celery by converting the observed change of weight in different sucrose concentrations. The hypothesis assumes that the solute concentration of the plant samples would be indirectly proportional to the weight; there would be decrease
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Kirat Hundle 1. What is the difference between an element and a compound? An element is an isotope made of the number of neutrons it has. A compound is a substance made of two or more different elements (a mixture). 2. What is the periodic table? A periodic table is where the chemical elements are organized based on their atomic number (number of protons in the nucleus)‚ electron arrangement‚ and chemical properties. 3. Give two examples of each of the four major mineral groups (silicates‚ carbonates
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Over many years anthropologists have been studying many concepts that deals with the past development of animals and humans. Over the years‚ anthropologists found many differences between the appearance‚ behavior and mind of humans and animals. Even though‚ there are many similarities and differences between humans and animals‚ there were many tasks that humans are able to do over animals. For instance‚ humans have their opposable thumbs‚ good eyesight‚ and also the most important detail is that
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Estimated Number of Animal and Plant Species on Earth Believe it or not‚ there are about 950‚000 species of insects No one knows for sure how many species of animals exist on Earth. In fact‚ some 10‚000 species of animals are discovered each year‚ with over one and a half million species already described. Projections for the total number of species on Earth range from 2 million to 50 million. Animal group Number of species Vertebrates Amphibians 6‚199 Birds 9‚956 Fish 30‚000 Mammals
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There are two processes of cell division that are very tricky. They are mitosis and meiosis. Many people often get confused with the two about their functions. They both serve as mechanisms for cell division. However‚ quite significantly‚ they are very much different in fact and occur in different situations. Mitosis and meiosis take place in different places. This is one of the first major differences between the two. Mitosis takes place within somatic cells (cells that make up the body)‚ while
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Plants‚ also called green plants (Viridiplantae in Latin)‚ are living organisms of the kingdom Plantae including such multicellular groups as flowering plants‚ conifers‚ ferns and mosses‚ as well as‚ depending on definition‚ the green algae‚ but not red or brown seaweeds like kelp‚ nor fungi or bacteria. Green plants have cell walls with cellulose and characteristically obtain most of their energy from sunlight via photosynthesis using chlorophyll contained in chloroplasts‚ which gives them their
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nerve cell maintains a difference in charge between the inside and the outside of the cell membrane. This difference in charge is continued by three factors. Firstly‚ in the cell membrane‚ there are sodium potassium ‘pumps’ crossing the membrane which are proteins that bring 2 potassium ions into the cell‚ for every 3 sodium ions it pumps out. As well as this‚ there are protein channels which allow potassium ions in the cell to flow out via facilitated diffusion. Potassium diffuses out the cell much
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12‚500 B.C.E‚ the domestication of animals and plants first arose. The domestication of animals and plants allowed early humans to manipulate the standard of living and heredity of plants and animals. Domestication took generations to achieve due to understanding the environment they inhabit. Domesticators gained many advantages that they didn’t have when they were hunters and gatherers. Between 7000 B.C.E and 500 B.C.E‚ the domestication of animals and plants in Central and East Asia gave early
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Differences between colonies: Religious: The Pilgrims who settled at Plymouth were "Puritans" vs. Anglicans at Jamestown. Plus‚ Plymouth was founded for religious reasons while Jamestown was founded for economic reasons. Don’t get me wrong--religion was critical for both groups but the Puritans left England because they were religious outcasts while the settlers at Jamestown were there for economic benefit and had investors. Labor: Jamestown was initially settled under martial law and the military
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chose this animal because animals are my favorite animal. the difference between the bear and the panda is the panda and the bears have different fur colors. panda fur is black and white‚ while the last bear fur is white there is also brown bear fur is not only that there are also black. In addition to differences in fur‚ pandas and bears are also different because they food they consumed was different. bears are animals that eat meat or also called the carnivore‚ whereas the panda that animals that eat
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