points out directly into the hypothesis. Hypothesis: A research hypothesis can stand for a test of time‚ it must be testable‚ talks about the current knowledge‚ and also realistic. "A hypothesis is a logical supposition‚ a reasonable guess‚ an educated conjecture. It provides a tentative explanation for a phenomenon under investigation." (Leedy and Ormrod‚ 2001). A hypothesis is important because it guides the research. A researcher may refer to the hypothesis to direct his or her thought
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Duckweed as a nutrient thief and bioremediator Hypothesis: This experiment will evaluate duckweed and its ability to remove nutrients and toxins from water sources. Thus‚ duckweed will kill the organisms that require similar nutrients‚ yet aid the organisms that would otherwise die to toxins. Specifically‚ if one was to place Elodea plants in a tank with duckweed‚ then the Elodea will die due to the lack of nutrients from the duckweed having used the nutrients for its own benefits. Furthermore
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are made when they are needed in the exact amount. An enzyme lowers the activation energy of a reaction so its easier to proceed. Enzymes are specific to which substrates it binds with to the active site.(AS biology‚ 2008). There is a lock and key hypothesis‚ as shown in diagram 1: (http://www.skinnersbiology.co.uk/enzyme.htm) the aim of this practical is to determine the activation energy of hydrolysis of
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The respiration and photosynthesis cycle is the process by which plants and animals interact in a codependent and symbiotic manner to produce the nutrients‚ gases‚ and energy that they require to survive. Plants obtain energy from sunlight and use it to combine carbon dioxide and water into glucose and oxygen. This process is called photosynthesis. Animals eat plants containing glucose‚ and combine glucose and oxygen‚ releasing energy‚ water‚ and carbon dioxide. This process is called respiration
Free Photosynthesis Adenosine triphosphate
Both the “savanna hypothesis” and the “aquatic ape hypothesis” attempt to explain the bipedalism of humans—our tendency and ability to walk upright‚ on two feet. According to the savanna hypothesis‚ our ancestors left the forests in Africa for the plains. The males hunted and needed to survey the horizon and walk a great distance. So‚ they began walking on two feet to better accommodate this need. This hypothesis also explains our larger brain size since smarter individuals
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Acheson ’s suggestion (10 July‚ p. 107) of a method which would test the Poskanzer hypothesis ’ that multiple sclerosis with clinical poliomyelitis represents the occasional neurological manifestation of a widespread subclinical enteric infection. Dr. Acheson believes: " In order to demonstrate that the epidemiology of poliomyelitis and multiple sclerosis in Australasia are consistent with Poskanzer ’s hypothesis it is necessary to show that where multiple sclerosis is thought to be rare (Queensland
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rate of photosynthesis. Prediction I predict that as the light intensity increases that the rate of photosynthesis will increase in proportion‚ so for example if you increase the light intensity from 10cm away to 20 cm away form a stationary plant. There for the rate of photosynthesis will decrease proportionally with the distance of the light from the plant (in this case a half). This means that as the light moves away then there is less light given to the reaction for photosynthesis to happen
Free Photosynthesis Carbon dioxide Light
good-genes and sexy-sons hypotheses focus on direct benefits associated with female choice. The good-genes hypothesis proposes that a female will choose to mate with males that they believe will produce better offspring. Typically this decision is based off a phenotypic trait that is an sign of higher genetic fitness‚ however sometimes these traits are not good indicators. The sexy-sons hypothesis is similar however it posits that females will choose the most attractive males to mate with so that those
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HYPOTHESIS TESTING WHAT IS THIS HYPOTHESIS???? • In simple words it means a mere assumption or supposition to be proved of disproved. • But‚ for a researcher it is a formal question that he intends to resolve. • Example: I assume that 1) under stress and anxiety a person goes into depression. 2) It leads to aggressive behaviour. Eg. : Students who get better counselling in a university will show a greater increase in creativity than students who were not counselled. • So‚ the hypothesis
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Null Hypothesis (McMillan‚ 2012‚ p. 49): A null hypothesis states that no significant statistical relationship or difference exists between the groups that are being compared in astudy. This term relates to all of the studies I read for my research study analyses. They all compared the academic achievement of high school athletes and non-athletes in some way or another. While the null hypotheses were not explicitly mentioned in the studies‚ they all would have been something along the lines of
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