The Scientific Study of Life Mastering Concepts: 1. What characteristics distinguish the living from the nonliving? The characteristics that distinguish the living from the nonliving are that nonliving things reproduce and grow‚ use energy‚ have levels of organization‚ maintain constant internal conditions‚ and evolve. 2. List the levels of life’s organizational hierarchy from smallest to largest‚ starting with atoms and ending with the biosphere. Atoms‚ molecules‚ organelles‚ cells
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IB Home Standard Level Higher Level Options Additional Resources 8.2 Photosynthesis 8.2.1 Draw and label a diagram showing the structure of a chloroplast as seen in an electron micrograph 2D Representation 3D Representation Electron Micrograph 8.2.2 State that photosynthesis consists of the light-dependent and light-independent reactions Photosynthesis is a two-step process: 1. The light dependent reactions convert the light energy into chemical energy 2. The light
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Why a Bill of Rights and What Impact Does it Have? All have heard the saying‚ “Great minds think alike.” When many great minds of the colonies gathered to create a new government‚ two rarely thought exactly alike. The Bill of Rights was created through the kind of debate and exchange of ideas that it protects to this day. The Declaration of Independence states the purpose of government is to protect our basic human rights. This was one principle that all the Founders did agree on. But if
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Experiment 8.1 Yes there was a change because with the starting snail population there was a great variation from 1-7. After the crab began eating only the snails with the thickest shells survived. The snails with the thinnest shells were eaten by the crab. Only snails with shell thickness 4-7 were left after the crab had their meal. The original snails with thickness 1-3 were eliminated from the population by the crab. The crab will usually try to expend as little enrgy as it can to maximaize its
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1. Read the press release on the 2001 Nobel Prize. Summarize in a few paragraphs the accomplishments of these scientists‚ and the relevance of their discoveries. (Answer in 500 words or less. Send to instructor) The Nobel Prize in Physiology or Medicine 2001 was awarded jointly to Leland H. Hartwell‚ Tim Hunt and Sir Paul M. Nurse "for their discoveries of key regulators of the cell cycle". They have identified key molecules that regulate the cell cycle in all eukaryotic organisms‚ including
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Discuss the chain of events that led to the discovery of DNA as the heritable substance and the discovery of the structure of DNA. Ans> The chain of events led to the discovery of DNA as the heritable substance and the discovery of the structure of DNA. In the late nineteenth century‚ a German biochemist Friedrich Miescher found the nucleic acids which are long-chain polymers of nucleotides‚ and are made up of sugar‚ phosphoric acid‚ and several nitrogen-containing bases. Later it was found
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JOHN BAPST HIGH SCHOOL NAME : Luis Adrian Vega Alvarez PERIOD: 5 COURSE : Junior 1. Background 1.1. One of the most vigorously debated topics on Earth is the issue of climate change‚ and the National Environmental Satellite‚ Data‚ and Information Service (NESDIS) data centers are central to answering some of the most pressing global change questions that remain unresolved. The National Climatic Data Center contains the instrumental and paleoclimatic records that can precisely
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Emulsifiers What does an emulsifier do? Emulsions in food are mixtures of oil and water. These normally do not mix and will separate if left without an emulsifier. Emulsifiers are among the most frequently used types of food additives. They are used for many reasons. Emulsifiers can help to make a food appealing. The example of the mayonnaise without the emulsifier shows how unappealing it would be if the oil and water separated before it was used. Emulsifiers have a big effect on the structure
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THE KEY ROLES OF CELL DIVISION The ability of organisms to reproduce best distinguishes living things from nonliving matter. The continuity of life is based on reproduction of cells‚ or cell division. In unicellular organisms like amoeba‚ division of one cell reproduces the entire organism. Multicellular organisms depend on cell division for: — Development from a fertilized cell — Growth — Repair Cell division is an integral part of the
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Hook: Since the dawn of time man has consumed foods which were given to us by nature but now in the modern age we resort to consuming foods which were partly made in a chemist’s beaker. Direction of Arguments: Food additives have were in use for centuries in process of pickling or preserving using vinegar or salt but recently it has taken a turn for the worst invading almost all the processed foods we consume. Arguments: 1. Lead to physiological disorders 2. Are known to cause to foods to
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