AP Biology Lab: Catalase (Enzymes) Abstract In this laboratory exercise‚ studies of enzyme catalase‚ which accelerates the breakdown of hydrogen peroxide into water and oxygen. The purpose was to isolate catalase from starch and measure the rate of activity under different conditions. The laboratory was also conducted in association with a second laboratory that measured the effects of an inhibitor on the enzymes. Changes in temperature and pH along with Substrate Concentration and Enzyme
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Abstract: This report presents the reason why the ocean does not freeze in the winter. Since the ocean consists of salt water‚ an experiment was done to test the effect of freezing on salt water compared to pure water. The experiment was conducted three times in order to obtain accurate results and eliminate errors. In addition to the salt and pure water experiment‚ a variation of this experiment was created to test other options. In the variation experiment the effect of freezing on sugar water
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ADI Lab Report Every living thing is made up of cells. All cells have some part in common. Some multicellular cells are highly specialized and carry out some very important functions. One of the special cells are red blood cells‚ their functions‚ transporting oxygen from the lungs to the cells in the body. Red blood cells look like little discs. Red blood cells can change their shape‚ this ability allowing them to squeeze through capillaries without breaking. Our task is to Design and carry out an
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New York City. As Winter approaches and the weather gets colder‚ Johnsy becomes ill with pneumonia. She gets so sick that she believes that when the last leaf falls from the vine outside her window‚ she will die. An old artist‚ named Behrman‚ who lives in the same building as the girls‚ braves a storm one night to paint a leaf on the wall — a leaf that will never fall. Cold and wet from painting in the icy rain‚ he catches pneumonia and dies. This gives Johnsy the hope to survive her illness‚ and
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greatest rate of photosynthesis‚ 3.10x10-3. Concentrations of 5% and 10% were deemed unusable as the agapanthus discs would not submerge‚ therefore the results did not enable a range of data. The results of the data indicate that 0.5% NaHCO3 is optimal in determining the rate of photosynthesis‚ 3.10x10-3. This shows that O2 (oxygen) will be more readily produced‚ thus causing the discs to merge to the top of the solution‚ as well as energy in the form of C6H12O6 (glucose) being produced. The products
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Lumbar Disc Herniation Practicum II Kayle Giarth Spinal disc herniation is a medical condition affecting the spine in which a tear in the outer ring of a disc that allows the soft central portion to bulge out beyond the damaged ring. Lumbar disc herniation can occur at any age‚ but the age average is approximately 40 years old(Spengler.) Because of this it is very uncommon for an athlete to present with this disorder. The cases we do see are usually in result from a trauma rather than degeneration
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EXPERIMENT NO. 1 INTRODUCTION TO LAB INSTRUMENTS. 1. BREADBOARD We should be familiar to the following things about a breadboard: * What is a breadboard and what is it used for? * How does it work? * Setting Up. * Limitations. What is a breadboard and what is it used for? A breadboard (or protoboard) is usually a construction base for prototyping of electronics. The term "breadboard" is commonly used to refer to a solderless breadboard (plugboard). It was designed by
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The human cardiovascular system consists of the heart‚ the blood‚ and a system of transporting vessels. A human heart has four chambers: a right and left atrium and a right and left ventricle. The fist-sized heart sits in its own sac (the pericardium) in the middle of the chest under the sternum. In most people‚ the apex of the heart points to the left. There are two circuits of simultaneous blood flow in humans: a pulmonary circuit and a systemic circuit. In the pulmonary circuit‚ the right
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photosynthesis in the leaf cells. Hypothesis: The higher the concentration of the sodium bicarbonate solution‚ the faster the leaf of the plant will rise to the surface of the water in the beaker‚ the higher the rate of photosynthesis. Materials: Fresh green leaf‚ hole punch‚ 50 mL plastic syringe‚ stop watch‚ 1 x 25mL beakers‚ 50 mL measuring cylinder‚ forceps‚ distilled water‚ 2%‚ 3%‚ 4%‚ 5% of sodium bicarbonate solution‚ overhead projector and sieve. Method: 1. The leaf is cut using a hole
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O. HENRY‚ THE LAST LEAF In the 1890s‚ many artists lived in Greenwich Village‚ in One morning‚ the doctor spoke quietly to Sue outside Johnsy’s room. New York City. Sue and Johnsy were artists. The two girls met each ‘I can’t help her‚’ the doctor said. ‘She is very sad. She other in the month of May‚ at a restaurant in Greenwich doesn’t want to live. Someone must make her happy again. Village. What is she interested in?’ ‘I’m from the State of Maine‚’ Sue said to Johnsy
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