technologies and scientific methods were used by historians and archaeologists tried to work out the life and death of Ötzi. Some of these major methods are: Examining the photos from the excavation site for the layout of Ötzi ’s surroundings. Carbon-14 dating to date when Ötzi had lived. A Mass Spectrometer (AMS) is used to discover Ötzi’s social background. X-ray‚ CAT scan and DNA analysis also used to determine the possible causes of his death. By examining the photos taken at the site‚
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Fatty acids (FAs) can ultimately be degraded through different pathways which include alpha‚ beta‚ and omega-oxidation. Alpha-oxidation occurs at carbon 2 of the chain‚ b-oxidation at C3‚ and omega-oxidation at methyl end of the fatty acid. The location of each mechanism also differs as alpha- oxidation occurs in peroxisomes only‚ beta-oxidation can take place in both peroxisomes and mitochondria. Omega-oxidation occurs in the endoplasmic reticulum of the various tissues. The importance of the differentiation
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Cell Respiration & Photosynthesis BIO STUDY GUIDE (Ch. 9.1-9.5‚ 10.1-10.3) I) CELLULAR RESPIRATION A) Catabolic Pathways A.1) Fermentation: partial degradation of sugar that occurs w/o oxygen A.2) Cellular Respiration: oxygen is used A.3) Redox Reactions (Oxidation-Reduction that exchanges electrons) Oxidation: loss of electrons (energy must be added) Reduction: addition of electrons. (-) charged electrons added to atom reduce amount of (+) charge of that atom A.4) Stepwise Energy Harvest
Free Photosynthesis Cellular respiration Adenosine triphosphate
triose phosphate. Step 3 - Each triose phosphate molecules is oxidised. Two atoms of hydrogen are removed from each molecule. The energy released by the oxidation is used to add another phosphate group to each molecule. This will result in two 3-carbon compounds‚ each carrying two phosphate groups. NAD+ is the hydrogen carrier that accepts the hydrogen atoms lost from each triose phosphate molecule. Step 4 - Two pyruvate molecules are formed by removing two phosphate groups from each molecule
Free Photosynthesis Cellular respiration Adenosine triphosphate
Chapter 7 Multiple Choice Questions Name: ____________________________________________________________ 1) Any network of relationships among a group of components‚ which interact with and influence one another through exchange of matter and/or information‚ is referred to as ________. A) an interchange B) a system C) an ecosystem D) an environmental collaboration E) hierarchy Diff: 1 Objective: 7.1 Systems‚ ecosystems‚ biotic‚ and abiotic
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Exam 3 Review Sheet Equation for cellular respiration‚ be able to follow carbons from glucose to carbon dioxide Four stages of cellular respiration Glycolysis‚ location‚ three phases‚ output. Breakdown of pyruvate‚ location‚ input and output Citric acid cycle‚ overall goal‚ main processes. Oxidative phosphorylation‚ electron transport chain‚ final acceptor Chemiosmosis‚ role of H ions‚ role of ATP synthase Fermentation‚ steps in the process‚ alcoholic and lactate‚ where each occurs Be able
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in cellular respiration. In photosynthesis‚ cells take in carbon dioxide (CO2) and water (H2O) by absorbing energy from the sun‚ and then the cells release oxygen (O2) and store glucose (C6H12O6). The formula of photosynthesis is: Light energy 6CO2+6H2O → C6H12O6+6O2 In cellular respiration‚ glucose and oxygen are taken into the cells‚ then they are converted to carbon dioxide‚ water and ATP energy and some other energy. Some of the
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and is a cheap alternative to gasolineYeasts are eukaryotic microorganisms and unicellar‚ and can be used to generate electricity in microbial fuel cells and produce ethanol. Biofuel is a type of fuel whose energy is derived from biological carbon fixation. Biofuels include fuels derived from biomass conversion‚ as well assolid biomass‚ liquid fuels and various biogases.Biofuels are gaining increased public and scientific attention‚ driven by factors such as oil price hikesand the need for increased energy
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minerals of the crust and mantle (99.5%). Only a small portion has been released as free oxygen to the biosphere (0.01%) and atmosphere (0.36%). The main source of atmospheric free oxygen is photosynthesis‚ which produces sugars and free oxygen from carbon dioxide and water:- 6CO2 + 6H2O + energy → C6H12O6 + 6O2 Photosynthesizing organisms include the plant life of the land areas as well as the phytoplankton of the oceans. The tiny marine cyanobacterium Prochlorococcus was discovered in 1986
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