Gabriela Rios-Martinez March 1‚ 2014 BIO 141 Exam 1 Study Questions Chapter 1: Biology and the Tree of Life (#1 – 4) 1. What is the difference between a hypothesis and a scientific Theory? Between a hypothesis and a prediction? What kinds of hypotheses are useful for scientific investigations that try to explain the natural world‚ and which are not? Give one or more examples of hypotheses that are and are not scientifically useful. (a.) A scientific theory has two components; a pattern
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Cell Energy Worksheet Answer the following questions: Cellular respiration: • What is cellular respiration and what are its three stages? The main function of cellular respiration is to generate ATP for cellular work; it is the process of harvesting chemical energy from organic fuel and converting it to ATP energy. The three stages of cell respiration include: Glycolysis‚ Citric Acid Cycle‚ and Electron Transport(Simon‚ Reece‚ & Dickery‚ 2010). • What is the role of glycolysis
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Endosymbiont theory There is compelling evidence that mitochondria and chloroplasts were once primitive bacterial cells. Both mitochondria and chloroplasts contain a ring of DNA double helix‚ just like that contained by a prokaryote. They also contain the small ribosomes‚ like those of prokaryotes. These features have caused some evolutionary biologists to suggest that some organelles are descendants of free- living prokaryotic organisms that came to inhabit larger cells. Present day prokaryotes
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c------------------------------------------------- Evidence for Endosymbiotic theory: ------------------------------------------------- Evidence that mitochondria and plastids arose from bacteria is as follows:[13][14][15] * New mitochondria and plastids are formed only through a process similar to binary fission. * In some algae‚ such as Euglena‚ the plastids can be destroyed by certain chemicals or prolonged absence of light without otherwise affecting the cell. In such a case‚ the
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Evolutionary Bioenergetics of Protocells Introduction Bioenergetics is central to our understanding of living systems‚ though there has been very less research in field of finding the origins of life. Understanding the origin of cellular life on Earth requires the discovery of plausible pathways for the transition from complex prebiotic chemistry to simple biology‚ defined as the emergence of chemical assemblies capable of Darwinian evolution. A coherent pathway which starts from no more than
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This scientific report will be based on cellular respiration‚ or fermentation. In specific‚ how the type of sugar affects the rate of fermentation. The aim of this experiment was to find which type of sugar was best suited to produce ethanol. In the experiment‚ four different sugars were used‚ they included sucrose‚ glucose‚ lactose and fructose. This research is still relevant today‚ as alcohol is still consumed and is required on a large scale. This makes it crucial to companies to find the best
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what is life What is Life? Bio/101 What is Life? Read each statement. Write a 100-word summary explaining how that media piece supports that statement and include reference citations. 1. Find a media piece—article‚ video‚ presentation‚ song‚ or other—related to the scientific method‚ creating hypotheses‚ or designing experiments. Include the link or reference citation for the piece and describe how it helped you better understand how the scientific method is used to create hypotheses
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According to Dr. Kravitz in his article called “The Marvelous Mitochondria” The Mitochondria was discovered in 1890 by a German cell Biologist Richard Altmann under the name of bio blasts. He first theorized that the bio blasts had metabolic and genetic self-sufficiency characteristics. Years later‚ it was given a name change by another German Biologist‚ Karl Benda‚ to the name of Mitochondria. Today‚ we know that the Mitochondria is an organelle found in most eukaryotic cells. According to David
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Primary Source Review #1 Title: Age-associated decreased activities of mitochondrial electron transport chain complexes in heart and skeletal muscle: role of L-carnitine Authors: Kumaran S.‚ Subathra M.‚ Balu M.‚ Panneerselvam C. Journal: Chemo-Biological Interactions Vol. 148 Pgs. 11-18 Date: 2004 Instructions: You may work together on this assignment and turn it in as a group or individually. You will need to use resources such as the internet in addition to your textbook and the article
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AP2530 Human A&P I Unit 2. Case Study 1. The Cellular Level of Organization B. Assuming Joseph’s heart has stopped‚ what cellular processes and membrane functions are going to be affected by the loss of oxygen‚ blood glucose‚ and waste removal? Assuming Joseph’s heart has stopped‚ the mitochondria and aerobic processes will be affected. The mitochondria is known as the powerhouse of the cell where ATP is produced. Oxygen and glucose are the main sources of energy for ATP. The muscle cells‚
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