snake plant‚ and some types of daisies and others produce oxygen at night. But remember your primary school science classes‚ when you learnt that plants practice a ‘magical’ process called photosynthesis? A plant needs light and water‚ to turn carbon dioxide into carbohydrates‚ and oxygen is the waste product of this process. However‚ that is simple science meant to raise the curiosity of a child. The reality is‚ there are three types of photosynthesis‚ and the third type you will read about
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At least for the foreseeable future‚ this planet is the only home we’ve got. It would be useful to know‚ then‚ whether it will continue to be habitable. Sometimes contemplating the future just means wondering whether it will snow tomorrow‚ or whether it will be a hot summer this year. We can think bigger‚ though. What will the climate be like a hundred years from now‚ or a thousand or a million? Will the greenhouse gases in our atmosphere ever reach an upper limit and start to diminish? Will our
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Reduction of Carbon dioxide greenhouse gas by microalgae fixation leading to biomass‚ biochemical and biofuel production After recognizing that the first and second generation of biodiesels is from sugar‚ vegetable oils and lignocellulosic biomass‚ microalgae are now known as the ‘third generation of biodiesel’. As many studies have told us that microalga is a promising organism for mass production of biomass and biofuel which are renewable and environmental friendly. Microalgae have a higher
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Science questions 1) carbon dioxide 2) Living organisms like plants‚ animals and decomposertake oxygen from the atmosphere and utiliseit for respiration. 3) Nitrogen fixation 4) Biosphere is the regions of surface atmosphere occupied by living organisms sustainsble ecosystem ecosystem is one that can survive and thrive without humans having to continually add or take out of the ecosystem. 5) When animals breathe they produce carbon dioxide and you get it when you eat a plant. 6) We use carbin
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is removed‚ the reaction is called which of the following? A. Dehydration synthesis. B. Hydrogenation. C. Hydrolysis. D. Oxidation. What is a nucleotide composed of? A. Nitrogenous base‚ 6 carbon sugar and a phosphate group. B. Nitrogenous base‚ 5 carbon sugar and a phosphorus group. C. Nitrogenous base‚ 5 carbon sugar and a phosphate group. D. None of the above. Enzymes work as catalysts by doing which of the following? A. Decreasing the activation energy. B. Increasing the activation energy. C. Allostericallly
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Essential Elements of Life Carbon‚ hydrogen‚ oxygen‚ nitrogen (96%) Calcium‚ phosphorus‚ potassium‚ sulphur (4%) Isotopes Atoms of an element that differ in neutrons Radioactive isotopes decay spontaneously‚ giving off energy Cohesion Hydrogen bonds hold water molecules together Adhesion is an attraction between two substances Surface tension measures how hard it is to break the surface tension of a liquid Hydrocarbons Organic molecules consisting of only carbon and hydrogen Isomers
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Biochemistry of Photosynthesis Overall Word Equation: Water+ Carbon Dioxide( Carbohydrates+ Oxygen ((: light + chlorophyll) 1. Light Dependent Stage/ photochemical reaction/ light reactions: Word Equation: Water ( Hydrogen ions + Oxygen ((: light + chlorophyll) Site: On the Thylakoid membrane of the chloroplast Major events: • Light absorption o Chlorophyll in the thylakoids absorbs light. The
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involved. The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms. This transformation can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation‚ ammonification‚ nitrification‚ and denitrification. The majority of Earth’s atmosphere (78%) is nitrogen‚ making it the largest pool of nitrogen. However‚ atmospheric nitrogen has limited availability for biological use‚ leading to a scarcity of
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Experiment #3 Mark A. Bruder 07. T.A. Michael Hall Alkanes: Chlorination Introduction: The purpose of this experiment is to determine the reactivity of hydrogen atoms on a carbon chain using free radical chlorination. In this experiment 1-chlorobutane will be chlorinated with the combination of sulfuryl chloride and ABCN as an initiator to produce the chlorine radicals. The combination of 1-chlorobutane and sulfur chloride will produce four dichlorobutane
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movement is the overall level of CO2 in the air. When an environment is devoid of carbon dioxide‚ the stomata will not necessarily close in the dark. Likewise‚ if there exists a great amount of carbon dioxide in the air‚ the stomata will close even if it is light outside. This has to do with osmosis and diffusion‚ and the fact that the guard cells are constantly “alert” for effectively managing the amount of carbon dioxide a plant should take in‚ as well as the release of water vapor and oxygen
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