Iran. J. Environ. Health. Sci. Eng.‚ 2010‚ Vol. 7‚ No. 2‚ pp. 299-306 GROWTH‚ PHOTOSYNTHESIS AND RESPIRATORY RESPONSE TO COPPER IN LEMNA MINOR: A POTENTIAL USE OF DUCKWEED IN BIOMONITORING Downloaded from http://journals.tums.ac.ir/ on Thursday‚ February 23‚ 2012 * N. Khellaf‚ M. Zerdaoui Laboratory of Environmental Engineering‚ Faculty of Engineering‚ Badji Mokhtar University‚ Annaba‚ Algeria Received 3 February 2010; revised 21 Jully 2010; accepted 20 August 2010 ABSTRACT Aquatic macrophytes
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energy in food originally came from ATP. False pulling together 12. The term photosynthesis means “pulling apart with light” in Greek. True__ 13. The energy of sunlight is stored in the chemical bonds of carbohydrates. 14. Complete the table comparing two types of organisms. Autotrophs and Heterotrophs Type Description Examples Autotrophs An organism that is able to create its own food through photosynthesis (simple organic substances) Plants Heterotrophs An organism that “feeds”
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Wavelength and Light Intensity on Photosynthetic Activity ABSTRACT The photosynthetic process of eukaryotes revolves around chlorophyll‚ the substance that give plants their green color. Plants convert light energy into chemical energy by means of photosynthesis. This experiment tests the reaction rates of a chloroplast suspension against variables of wavelengths and light intensity. Both a control and an experimental cuvette were exposed to a range of 450 to 750nm of light and varying intensities to test
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dioxide concentration on the rate of photosynthesis Introduction Photosynthesis is a process that is essential for every living organism. Organic substances‚ such as glucose‚ are made from carbon dioxide and water by light energy from the sun. The light energy is absorbed by chlorophyll and converted to chemical energy. During the process‚ oxygen is released as a by-product. The rate of photosynthesis is affected by a few of factors‚ including light intensity‚ temperature‚ availability of
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How Music Affects Us and Promotes Health Music is one of the few activities that involves using the whole brain. It is intrinsic to all cultures and can have surprising benefits not only for learning language‚ improving memory and focusing attention‚ but also for physical coordination and development. Of course‚ music can be distracting if it’s too loud or too jarring‚ or if it competes for our attention with what we’re trying to do. But for the most part‚ exposure to many kinds of music has beneficial
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An investigation in to the rate of reaction Plan: I am going to investigate the rate of reaction. The reaction I will be using is: Calcium Carbonate + Hydrochloric acid ---- Calcium Chloride + water + carbon dioxide. CaCO3 + 2HCl ---- CaCl +H2O + CO2 Measurements and Variables: The variables I have chosen to change is strength of the hydrochloric acid which will be 1 mole‚ 0.7 mole‚ 0.5 mole‚ 0.3 mole and 0.1 mole some variable I will not be using are temperature‚ mass‚ density. The measurements
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How exercise affects certain aspects of the body During exercise our body needs more oxygen and blood to keep the muscles activated. To grant this the heart pumps higher frequency of blood increasing the heart rate. Heart pumps blood through arteries faster resulting in a high blood pressure. Exercise increases the stroke volume (the amount of blood pumped in one beat)‚ so an increase in stroke volume means that the heart can pump enough blood to the body with fewer beats per minute. Even after the
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to break the necessary bonds so that new bonds can be formed. Thus‚ increasing the concentration of the anode‚ zinc sulfate‚ will increases the rate of reaction for oxidation because there are more zinc ions in the new concentration‚ which would also increase the collision between molecules. This will eventually allow an increase in the transferring rate of electrons to the cathode‚ as there are certainly
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Investigation How does the concentration of the sodium thiosulfate affect the rate of reaction to hydrochloric acid? contents page 1: contents‚ aim‚ prediction‚ equation‚ diagram page 2: equipment‚ preliminary experiments page 3: page 4: page 5: page 6: page 7: page 8: Aim: In my investigation I am trying to find out how the rate of reaction between sodium thiosulfate and hydrochloric acid gets affected but the concentration of the thiosulfate. Prediction: My prediction is that the increased
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the rainforest because of its high humidity rate. Rainforests have a humidity rate of 77% to 88% all year long. The rain forest is an environment that is rainy and humid. The rain forest only has one season because it’s weather and temperature never change. The temperature never changes because of the high humidity rate and waters thermal resistance. The rain forest has direct sunlight that provides light and heat but indirect only provides light. Rain forests have an average temperature of
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