eSciencelab.com biology lab #1 dissolved oxygen Determine which of the following observations are testable. For those that are testable: • Write a hypothesis and null hypothesis • What would be your experimental approach? • What are the dependant and independent variables? • What is your control? • How will you collect data? • How will you present your data (charts‚ graphs‚ types)? • How will you analyze your data? 1. When a plant is placed on a window sill‚ it grows faster than when it
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Indoor climate and ventilation JENS PEDER PEDERSEN Jens Peder Pedersen Indoor climate and ventilation INDOOR CLIMATE Thermal indoor climate Air temperature‚ air velocity and air humidity Atmospheric indoor climate: = Air quality: pollutions as dust‚ air humidity‚ gasses and smell The psychical environment Page 2 Jens Peder Pedersen Indoor climate and ventilation INDOOR CLIMATE Physical and chemical demands for the indoor climate 1. Suitable temperature 2. Suitable
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objective of the experiment is to measure carbon dioxide production in three aquatic organisms‚ and to determine and compare the rate of cellular respiration in each organism. Aerobic respiration is the process which body obtains energy by using glucose + oxygen; this reaction takes place in mitochondrion in a cell; And the result of the reaction are carbon dioxide‚ water‚ and energy in the form of ATP ( adenosine triphosphate) (Hoefnagels‚ 2012). According to Biology 6th Edition‚ plants use light to convert
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Dissolved Oxygen and Aquatic Primary Productivity Lab AP Biology Procedure: 1) Have two containers ready‚ one with ice water a little bit above freezing‚ and the other with hot water just below the boiling point. 2) Fill three bottles with the lake water provided‚ trying to have as little duck weed as possible in them. 3) Put one of the bottles in the cold container‚ and one in the hot‚ leave the other at room temperature. 4) Using the testing equipment‚ measure the dissolved oxygen level of
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REDUCTION Oxygen makes up only about 20% of the air‚ yet is the essential component for so many reactions. Without it fuels would not burn‚ iron would not rust and we would be unable to obtain energy from our food molecules through respiration. Indeed animal life on the planet did not evolve until a certain concentration of oxygen had built up in the atmosphere over 600 million years ago. The term oxidation has been in use for a long time to describe these and other reactions where oxygen is added
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Introduction: An oxygen sensor‚ or lambda sensor‚ is an electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analyzed. It was developed by Robert Bosch GmbH during the late 1960s under supervision by Dr. Günter Bauman. The original sensing element is made with a thimble-shaped zirconia ceramic coated on both the exhaust and reference sides with a thin layer of platinum and comes in both heated and unheated forms. The most common application is to measure the
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Noninvasive ventilation is a practiced method which uses devices‚ such as the nasal-oral mask and the full-face mask‚ that allows patients who have respiratory dysfunctions to breathe easily and more comfortably. As the names imply‚ the nasal-oral mask covers the nose and mouth while the full-face mask covers a large portion of the face. Unfortunately‚ the ventilation masks are not always one-hundred percent therapeutic; since patients who require ventilation masks may have their immune system suppressed
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mortalities were recorded in the control group throughout the experimental period. Table 1 show that the highest mortality rate occurred in Nile tilapia fish in the S. iniae+ C. albicans infected group (76.19%)‚ followed by those infected with S. iniae alone (61.9%) and then the C. albicans infected group (57.14%). Clinically‚ the S. iniae-infected fish exhibited loss of appetite‚ loss of equilibrium with erratic movement‚ swam near to the surface of water‚ detachment of scales‚ hemorrhages on the different
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associated with fish consumption in men and women: a study of whether gender differences can result in gender-specific confounding. Fish consumption and intake of omega-3 fatty acids from fish are associated with a lower risk of cardiovascular disease. However‚ a prospective study from Sweden has showed that high consumption of omega-3 fatty acids from fish is associated with an increased risk of stroke in men‚ but not in women. The study aimed to determine whether fish consumption is differently
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Purpose: To determine the percent magnesium by mass in magnesium oxide and to observe if the percentage composition is constant by comparing class results. Hypothesis/Prediction: The percent composition by mass of magnesium in magnesium oxide will not change significantly with each group that conducted the experiment. The composition of each substance should stay the same and any differences must be due to some error. Materials:Magnesium stripCrucibleCrucible coverClay triangleIron ringRetort standTongsBalanceBunsen
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