Plant physiology

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    Ap Biology Lab

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    The stomatal density of young and old leaves has not significantly different densities. The age of the leaf does not аffect and do not correlate with stomatal density. Because, when the leaf is a baby leaf it makes all the stomata and as leaf growth it just pulls apart from each other. Stomata has an essential rоle in all plаnts. Stomata helps to maintain balance between water and gas exchanges. The word stomatа come from Greek and meаns opening. The structurе оf the stоmata cоnsists оf the guard cеlls аnd thеre is оpening betwееn them. Thеse opеnings оpen and closе in responsе to ecological and envirоnmental changes, thus helping to a plant maintain a balance between water lоsses and it is оxygen requirements: (Evert, Eichhorn and Raven). Materials and Methods: At least one of each young and old leaves of holly were collected from a single plant. After, a table on a data sheet was prepared in order to record data. There were ten microscopic fields of view from each leaf and two sets of data A and B. A stands for old leaves and B stands for young leaves. Next, the leaf was cleaned from a dust and a small area of the leaf was painted with a thin layer of clear nail polish. When the nail polish is completely dried, an approximately 1-2 cm clear cellophane tape was obtained. To create a sort of handle, 1/3 of the tape was folded and stuck the cellophane tape to the middle. The sticky end of the tape was adhered to nail polish on the leaf. Then by using the tape handle, the nail…

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    Method Bean plants (Phaseolus vulgaris) were provided by the instructor for the experiment at Mount Royal University. There were four or more bean plants in each of the four pots. The first task was to choose the best three plants in each pot based on whether they had two big healthy leaves and so the three plants looked relatively similar. The excess plants were cut out so that each of the four pots contained three plants, making a total of twelve plants. Each of the four represented a…

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    that trees transport water through continuous chains of water molecules in the xylem, which are pulled upward by an increase in tension at the top of each column caused by evaporation in leaves (Tyree et al. 2003). As such, trees reach a height limit in which the tension is too great for water to be pulled from the column. With increasing height, trees must allocate their energy and resources efficiently to maximize photosynthetic capability in the face of water stress, by closing its leaves’…

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    Enzymes speed up the rates of most biochemical reactions by helping reactants interact with each other. Since enzymes are highly specific for a specific reaction, they only catalyze one or a few types of reaction. One of important enzymes in human body and many other animals is amylase that hydrolyzes starch, a major part of human diet for many people in the world. There is a variety of amylase produced from many sources in our body such as salivary glands in the mouth, pancreas cells, and small…

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    different alternative methods to animal testing. These include an in vitro test, computerized patient-drug databases and virtual drug trials, computer models and simulations, stem cell and genetic testing, and non-invasive imaging techniques. Some In-Vitro testing include: “Organs-on-chips” which are human cells that grow in a state-of-the-art system, created by Harvard’s Wyss Institute. These chips mimic the structure and function of human organs and organ systems. This technological…

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    Ethical Dilemmas In Animal Testing

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    Cited Bishop, Patricia L.,et al "A SCIENTIFIC CONCEPTION OF ANIMAL WELFARE THAT REFLECTS ETHICAL CONCERNS." Infohio.org. Infohio, 11 Dec. 2012. Web. 3 Dec. 2013. <http://web.ebscohost.com/ehost/detail?sid=fc3d76d0-b0c9-40c6-b67e-7c57009bf3f3%40sessionmgr4&vid=1&hid=24&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=aph&AN=84495989>. Drummond, Gordon B. "The Journal of Physiology." Reporting Ethical Matters in : Standards and Advice. The Journal of Physiology, n.d.2013 Web. 3 Dec. 2013.…

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    Polygraph Synthesis Essay

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    A polygraph is a common instrument of measurement to calculate and document physiological aspects such as respiration rate, electrodermal activity, and heart rate. The relevant uses of measuring respiration rate as well as heart rate are quite common in a wide variety of applications. However, electrodermal activity and the galvanic skin response are not commonly measured things in places such as the medical field, or education. Electrodermal activity (EDA) refers to the variation of the…

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    Fetal Pig

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    The study of anatomy and physiology. Anatomy is the scientific term for the study of the body structure and physiology is the term for the study of the function of the body’s organs. During the class, we dissected a pig. We did it to compare the human body and its organ systems with the pig body because they are similar in function. We defined each system and the organs that belong to each one. In anatomy and physiology class we learn about the human body and its composition. To see and learn…

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    brightknowledge.org/knowledge-bank/medicine-and-healthcare/careers-and-courses/my-job-explained-cardiac-physiologist). However, often when the patient sees that there isn’t a tense atmosphere, things become easier. Having exceptional verbal skills doesn’t only mean that you are sophisticated when talking or easy to understand, it also conveys the message that you can be an easy person to talk to and in this case particularly be comfortable enough to discuss the health/cardiac issues.…

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    A 94 year old female was admitted to the hospital with occurring symptoms of swelling (edema) in the both of the lower legs, shortness of breath (dyspnoea) and recent weight gain due to Congestive heart failure (CHF). CHF is a condition in which the heart is unable to pump sufficient blood to meet the metabolic needs of the body (Figueroa & Peters, 2016). The result of inadequate cardiac output (CO) is poor organ perfusion and vascular congestion in the pulmonary (left-sided failure) and…

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