This lab tests the process of germination with various pH levels. The pH level of something is its measure of acidity or how basic it is‚ solutions with a pH of less than 7 are said to be acidic‚ and solutions with a pH greater than 7 are said to be basic. The tap water that was used to water our beans had a pH of 6. In this lab‚ we studied the process of germination (the process by which a plant grows from a seed). Certain environmental factors can cause or stop a seed’s germination‚ and these factors
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at different pHs Abstract These experiments aimed to determine the optimum pH ranges various buffers are effective and provide opportunity for the use of the Henderson-Hasselbalch equation to prepare a buffer of a specific pH. Three different buffer systems were initially investigated; volumes of weak acid and weak bases of specified concentration were prepared and titrated against strong acid or strong base solutions with pH readings taken at frequent intervals to determine pH ranges over which
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Bean Growth with Different pH Levels Through this experiment‚ the objective was to find which pH liquid created the best environment for the Mung beans to grow. First‚ the beans were placed into bags with different pH liquids. Then‚ measurements were taken each day to monitor the growth average of the beans. The pH 2 beans average size at the end of the experiment were 0.24 cubic centimeters‚ the pH 7 size average was 0.38 cubic centimeters‚ and the size average of the pH 2 beans was 0.24 cubic centimeters
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Introduction: The purpose of this experiment is to measure the effects of changes in temperatures and pH on enzyme activity in skeletal muscle‚ particularly the activity of lactate dehydrogenase (LDH). LDH is a glycolytic enzyme which converts pyruvate to lactate in the following equation: LDH Pyruvate+ NADH ------------ Lactate + NAD The reaction above can move in both directions‚
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determine the acidity of certain substances‚ we used moist and dry pH paper (litmus tests)‚ and observed the results. First we used dry pH paper to test the acidity of household ammonia‚ and it turned yellow. According to the legend‚ this indicates a weak acid. This is‚ however‚ not accurate as the vapor of the household ammonia wasn’t able to react as strongly with the pH paper since it was dry. Then‚ we used moist DI water pH paper with the same substance‚ household ammonia‚ and it almost immediately
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How does pH affect the enzyme activity of catalase? Introduction Background Research Catalase is an enzyme found in all living organisms that are exposed to oxygen. The catalyst I am specifically using in this experiment is plant based. Catalase?s substrate is hydrogen peroxide. Catalase plays a role in?Oxidative Stress? a term used to describe when the antioxidants and the reactive species are out of balance in the cell. Oxidative stress is a problem as it causes cell damage and plays a role in
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|Question 1 | |A client has been hospitalized after an automobile accident. A full leg cast was applied in the emergency room. The most important reason for| |the nurse to elevate the casted leg is to | |
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Page 429 #’s 1-7 1. List the three major parts of the brain and describe their locations. A. cerebrum- constitutes about 83% of its volume and consists of a pair of half-globes called the cerebral hemispheres. B. cerebellum- lies inferior to the cerebrum and occupies the posterior cranial fossa. C. brainstem- that which remains of the brain if the cerebrum and cerebellum are removed. 2. Gyrus- a wrinkle or fold in the cortex of the cerebrum or cerebellum. Sulcus- a groove in the surface of
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Research Question: To investigate how varying the pH of bromothymol blue affects the absorbance value of the solution which determines the equilibrium constant (pKa) of the indicator. Variables: Variables Variables Measured Method of measurement Independent pH of the six buffer solution A pH probe attached to a data-logger will be used to measure pH Dependent Absorption of the buffer solutions at wavelength 435.0nm and 617.0 nm A spectrophotometer (±0.001) will be used to measure absorbance
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The Evaluation of TOEFL test Xiajie Tang TOEFL stands for Test of English as a Foreign Language. The test is not a test for business or professional purposes. That is‚ the TOEFL test is not intended for students of a particular subject or major. The purpose of TOEFL is to assess English proficiency of persons especially for international students whose native language is
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